Docs

59 files changed, 14926 insertions, 0 deletions

diff --git a/node_modules/sucrase/dist/esm/CJSImportProcessor.js b/node_modules/sucrase/dist/esm/CJSImportProcessor.js
new file mode 100644
index 0000000..d8b7803
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/CJSImportProcessor.js
@@ -0,0 +1,456 @@
+
+
+
+import {isDeclaration} from "./parser/tokenizer";
+import {ContextualKeyword} from "./parser/tokenizer/keywords";
+import {TokenType as tt} from "./parser/tokenizer/types";
+
+import getImportExportSpecifierInfo from "./util/getImportExportSpecifierInfo";
+import {getNonTypeIdentifiers} from "./util/getNonTypeIdentifiers";
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/**
+ * Class responsible for preprocessing and bookkeeping import and export declarations within the
+ * file.
+ *
+ * TypeScript uses a simpler mechanism that does not use functions like interopRequireDefault and
+ * interopRequireWildcard, so we also allow that mode for compatibility.
+ */
+export default class CJSImportProcessor {
+   __init() {this.nonTypeIdentifiers = new Set()}
+   __init2() {this.importInfoByPath = new Map()}
+   __init3() {this.importsToReplace = new Map()}
+   __init4() {this.identifierReplacements = new Map()}
+   __init5() {this.exportBindingsByLocalName = new Map()}
+
+  constructor(
+     nameManager,
+     tokens,
+     enableLegacyTypeScriptModuleInterop,
+     options,
+     isTypeScriptTransformEnabled,
+     keepUnusedImports,
+     helperManager,
+  ) {;this.nameManager = nameManager;this.tokens = tokens;this.enableLegacyTypeScriptModuleInterop = enableLegacyTypeScriptModuleInterop;this.options = options;this.isTypeScriptTransformEnabled = isTypeScriptTransformEnabled;this.keepUnusedImports = keepUnusedImports;this.helperManager = helperManager;CJSImportProcessor.prototype.__init.call(this);CJSImportProcessor.prototype.__init2.call(this);CJSImportProcessor.prototype.__init3.call(this);CJSImportProcessor.prototype.__init4.call(this);CJSImportProcessor.prototype.__init5.call(this);}
+
+  preprocessTokens() {
+    for (let i = 0; i < this.tokens.tokens.length; i++) {
+      if (
+        this.tokens.matches1AtIndex(i, tt._import) &&
+        !this.tokens.matches3AtIndex(i, tt._import, tt.name, tt.eq)
+      ) {
+        this.preprocessImportAtIndex(i);
+      }
+      if (
+        this.tokens.matches1AtIndex(i, tt._export) &&
+        !this.tokens.matches2AtIndex(i, tt._export, tt.eq)
+      ) {
+        this.preprocessExportAtIndex(i);
+      }
+    }
+    this.generateImportReplacements();
+  }
+
+  /**
+   * In TypeScript, import statements that only import types should be removed.
+   * This includes `import {} from 'foo';`, but not `import 'foo';`.
+   */
+  pruneTypeOnlyImports() {
+    this.nonTypeIdentifiers = getNonTypeIdentifiers(this.tokens, this.options);
+    for (const [path, importInfo] of this.importInfoByPath.entries()) {
+      if (
+        importInfo.hasBareImport ||
+        importInfo.hasStarExport ||
+        importInfo.exportStarNames.length > 0 ||
+        importInfo.namedExports.length > 0
+      ) {
+        continue;
+      }
+      const names = [
+        ...importInfo.defaultNames,
+        ...importInfo.wildcardNames,
+        ...importInfo.namedImports.map(({localName}) => localName),
+      ];
+      if (names.every((name) => this.shouldAutomaticallyElideImportedName(name))) {
+        this.importsToReplace.set(path, "");
+      }
+    }
+  }
+
+  shouldAutomaticallyElideImportedName(name) {
+    return (
+      this.isTypeScriptTransformEnabled &&
+      !this.keepUnusedImports &&
+      !this.nonTypeIdentifiers.has(name)
+    );
+  }
+
+   generateImportReplacements() {
+    for (const [path, importInfo] of this.importInfoByPath.entries()) {
+      const {
+        defaultNames,
+        wildcardNames,
+        namedImports,
+        namedExports,
+        exportStarNames,
+        hasStarExport,
+      } = importInfo;
+
+      if (
+        defaultNames.length === 0 &&
+        wildcardNames.length === 0 &&
+        namedImports.length === 0 &&
+        namedExports.length === 0 &&
+        exportStarNames.length === 0 &&
+        !hasStarExport
+      ) {
+        // Import is never used, so don't even assign a name.
+        this.importsToReplace.set(path, `require('${path}');`);
+        continue;
+      }
+
+      const primaryImportName = this.getFreeIdentifierForPath(path);
+      let secondaryImportName;
+      if (this.enableLegacyTypeScriptModuleInterop) {
+        secondaryImportName = primaryImportName;
+      } else {
+        secondaryImportName =
+          wildcardNames.length > 0 ? wildcardNames[0] : this.getFreeIdentifierForPath(path);
+      }
+      let requireCode = `var ${primaryImportName} = require('${path}');`;
+      if (wildcardNames.length > 0) {
+        for (const wildcardName of wildcardNames) {
+          const moduleExpr = this.enableLegacyTypeScriptModuleInterop
+            ? primaryImportName
+            : `${this.helperManager.getHelperName("interopRequireWildcard")}(${primaryImportName})`;
+          requireCode += ` var ${wildcardName} = ${moduleExpr};`;
+        }
+      } else if (exportStarNames.length > 0 && secondaryImportName !== primaryImportName) {
+        requireCode += ` var ${secondaryImportName} = ${this.helperManager.getHelperName(
+          "interopRequireWildcard",
+        )}(${primaryImportName});`;
+      } else if (defaultNames.length > 0 && secondaryImportName !== primaryImportName) {
+        requireCode += ` var ${secondaryImportName} = ${this.helperManager.getHelperName(
+          "interopRequireDefault",
+        )}(${primaryImportName});`;
+      }
+
+      for (const {importedName, localName} of namedExports) {
+        requireCode += ` ${this.helperManager.getHelperName(
+          "createNamedExportFrom",
+        )}(${primaryImportName}, '${localName}', '${importedName}');`;
+      }
+      for (const exportStarName of exportStarNames) {
+        requireCode += ` exports.${exportStarName} = ${secondaryImportName};`;
+      }
+      if (hasStarExport) {
+        requireCode += ` ${this.helperManager.getHelperName(
+          "createStarExport",
+        )}(${primaryImportName});`;
+      }
+
+      this.importsToReplace.set(path, requireCode);
+
+      for (const defaultName of defaultNames) {
+        this.identifierReplacements.set(defaultName, `${secondaryImportName}.default`);
+      }
+      for (const {importedName, localName} of namedImports) {
+        this.identifierReplacements.set(localName, `${primaryImportName}.${importedName}`);
+      }
+    }
+  }
+
+  getFreeIdentifierForPath(path) {
+    const components = path.split("/");
+    const lastComponent = components[components.length - 1];
+    const baseName = lastComponent.replace(/\W/g, "");
+    return this.nameManager.claimFreeName(`_${baseName}`);
+  }
+
+   preprocessImportAtIndex(index) {
+    const defaultNames = [];
+    const wildcardNames = [];
+    const namedImports = [];
+
+    index++;
+    if (
+      (this.tokens.matchesContextualAtIndex(index, ContextualKeyword._type) ||
+        this.tokens.matches1AtIndex(index, tt._typeof)) &&
+      !this.tokens.matches1AtIndex(index + 1, tt.comma) &&
+      !this.tokens.matchesContextualAtIndex(index + 1, ContextualKeyword._from)
+    ) {
+      // import type declaration, so no need to process anything.
+      return;
+    }
+
+    if (this.tokens.matches1AtIndex(index, tt.parenL)) {
+      // Dynamic import, so nothing to do
+      return;
+    }
+
+    if (this.tokens.matches1AtIndex(index, tt.name)) {
+      defaultNames.push(this.tokens.identifierNameAtIndex(index));
+      index++;
+      if (this.tokens.matches1AtIndex(index, tt.comma)) {
+        index++;
+      }
+    }
+
+    if (this.tokens.matches1AtIndex(index, tt.star)) {
+      // * as
+      index += 2;
+      wildcardNames.push(this.tokens.identifierNameAtIndex(index));
+      index++;
+    }
+
+    if (this.tokens.matches1AtIndex(index, tt.braceL)) {
+      const result = this.getNamedImports(index + 1);
+      index = result.newIndex;
+
+      for (const namedImport of result.namedImports) {
+        // Treat {default as X} as a default import to ensure usage of require interop helper
+        if (namedImport.importedName === "default") {
+          defaultNames.push(namedImport.localName);
+        } else {
+          namedImports.push(namedImport);
+        }
+      }
+    }
+
+    if (this.tokens.matchesContextualAtIndex(index, ContextualKeyword._from)) {
+      index++;
+    }
+
+    if (!this.tokens.matches1AtIndex(index, tt.string)) {
+      throw new Error("Expected string token at the end of import statement.");
+    }
+    const path = this.tokens.stringValueAtIndex(index);
+    const importInfo = this.getImportInfo(path);
+    importInfo.defaultNames.push(...defaultNames);
+    importInfo.wildcardNames.push(...wildcardNames);
+    importInfo.namedImports.push(...namedImports);
+    if (defaultNames.length === 0 && wildcardNames.length === 0 && namedImports.length === 0) {
+      importInfo.hasBareImport = true;
+    }
+  }
+
+   preprocessExportAtIndex(index) {
+    if (
+      this.tokens.matches2AtIndex(index, tt._export, tt._var) ||
+      this.tokens.matches2AtIndex(index, tt._export, tt._let) ||
+      this.tokens.matches2AtIndex(index, tt._export, tt._const)
+    ) {
+      this.preprocessVarExportAtIndex(index);
+    } else if (
+      this.tokens.matches2AtIndex(index, tt._export, tt._function) ||
+      this.tokens.matches2AtIndex(index, tt._export, tt._class)
+    ) {
+      const exportName = this.tokens.identifierNameAtIndex(index + 2);
+      this.addExportBinding(exportName, exportName);
+    } else if (this.tokens.matches3AtIndex(index, tt._export, tt.name, tt._function)) {
+      const exportName = this.tokens.identifierNameAtIndex(index + 3);
+      this.addExportBinding(exportName, exportName);
+    } else if (this.tokens.matches2AtIndex(index, tt._export, tt.braceL)) {
+      this.preprocessNamedExportAtIndex(index);
+    } else if (this.tokens.matches2AtIndex(index, tt._export, tt.star)) {
+      this.preprocessExportStarAtIndex(index);
+    }
+  }
+
+   preprocessVarExportAtIndex(index) {
+    let depth = 0;
+    // Handle cases like `export let {x} = y;`, starting at the open-brace in that case.
+    for (let i = index + 2; ; i++) {
+      if (
+        this.tokens.matches1AtIndex(i, tt.braceL) ||
+        this.tokens.matches1AtIndex(i, tt.dollarBraceL) ||
+        this.tokens.matches1AtIndex(i, tt.bracketL)
+      ) {
+        depth++;
+      } else if (
+        this.tokens.matches1AtIndex(i, tt.braceR) ||
+        this.tokens.matches1AtIndex(i, tt.bracketR)
+      ) {
+        depth--;
+      } else if (depth === 0 && !this.tokens.matches1AtIndex(i, tt.name)) {
+        break;
+      } else if (this.tokens.matches1AtIndex(1, tt.eq)) {
+        const endIndex = this.tokens.currentToken().rhsEndIndex;
+        if (endIndex == null) {
+          throw new Error("Expected = token with an end index.");
+        }
+        i = endIndex - 1;
+      } else {
+        const token = this.tokens.tokens[i];
+        if (isDeclaration(token)) {
+          const exportName = this.tokens.identifierNameAtIndex(i);
+          this.identifierReplacements.set(exportName, `exports.${exportName}`);
+        }
+      }
+    }
+  }
+
+  /**
+   * Walk this export statement just in case it's an export...from statement.
+   * If it is, combine it into the import info for that path. Otherwise, just
+   * bail out; it'll be handled later.
+   */
+   preprocessNamedExportAtIndex(index) {
+    // export {
+    index += 2;
+    const {newIndex, namedImports} = this.getNamedImports(index);
+    index = newIndex;
+
+    if (this.tokens.matchesContextualAtIndex(index, ContextualKeyword._from)) {
+      index++;
+    } else {
+      // Reinterpret "a as b" to be local/exported rather than imported/local.
+      for (const {importedName: localName, localName: exportedName} of namedImports) {
+        this.addExportBinding(localName, exportedName);
+      }
+      return;
+    }
+
+    if (!this.tokens.matches1AtIndex(index, tt.string)) {
+      throw new Error("Expected string token at the end of import statement.");
+    }
+    const path = this.tokens.stringValueAtIndex(index);
+    const importInfo = this.getImportInfo(path);
+    importInfo.namedExports.push(...namedImports);
+  }
+
+   preprocessExportStarAtIndex(index) {
+    let exportedName = null;
+    if (this.tokens.matches3AtIndex(index, tt._export, tt.star, tt._as)) {
+      // export * as
+      index += 3;
+      exportedName = this.tokens.identifierNameAtIndex(index);
+      // foo from
+      index += 2;
+    } else {
+      // export * from
+      index += 3;
+    }
+    if (!this.tokens.matches1AtIndex(index, tt.string)) {
+      throw new Error("Expected string token at the end of star export statement.");
+    }
+    const path = this.tokens.stringValueAtIndex(index);
+    const importInfo = this.getImportInfo(path);
+    if (exportedName !== null) {
+      importInfo.exportStarNames.push(exportedName);
+    } else {
+      importInfo.hasStarExport = true;
+    }
+  }
+
+   getNamedImports(index) {
+    const namedImports = [];
+    while (true) {
+      if (this.tokens.matches1AtIndex(index, tt.braceR)) {
+        index++;
+        break;
+      }
+
+      const specifierInfo = getImportExportSpecifierInfo(this.tokens, index);
+      index = specifierInfo.endIndex;
+      if (!specifierInfo.isType) {
+        namedImports.push({
+          importedName: specifierInfo.leftName,
+          localName: specifierInfo.rightName,
+        });
+      }
+
+      if (this.tokens.matches2AtIndex(index, tt.comma, tt.braceR)) {
+        index += 2;
+        break;
+      } else if (this.tokens.matches1AtIndex(index, tt.braceR)) {
+        index++;
+        break;
+      } else if (this.tokens.matches1AtIndex(index, tt.comma)) {
+        index++;
+      } else {
+        throw new Error(`Unexpected token: ${JSON.stringify(this.tokens.tokens[index])}`);
+      }
+    }
+    return {newIndex: index, namedImports};
+  }
+
+  /**
+   * Get a mutable import info object for this path, creating one if it doesn't
+   * exist yet.
+   */
+   getImportInfo(path) {
+    const existingInfo = this.importInfoByPath.get(path);
+    if (existingInfo) {
+      return existingInfo;
+    }
+    const newInfo = {
+      defaultNames: [],
+      wildcardNames: [],
+      namedImports: [],
+      namedExports: [],
+      hasBareImport: false,
+      exportStarNames: [],
+      hasStarExport: false,
+    };
+    this.importInfoByPath.set(path, newInfo);
+    return newInfo;
+  }
+
+   addExportBinding(localName, exportedName) {
+    if (!this.exportBindingsByLocalName.has(localName)) {
+      this.exportBindingsByLocalName.set(localName, []);
+    }
+    this.exportBindingsByLocalName.get(localName).push(exportedName);
+  }
+
+  /**
+   * Return the code to use for the import for this path, or the empty string if
+   * the code has already been "claimed" by a previous import.
+   */
+  claimImportCode(importPath) {
+    const result = this.importsToReplace.get(importPath);
+    this.importsToReplace.set(importPath, "");
+    return result || "";
+  }
+
+  getIdentifierReplacement(identifierName) {
+    return this.identifierReplacements.get(identifierName) || null;
+  }
+
+  /**
+   * Return a string like `exports.foo = exports.bar`.
+   */
+  resolveExportBinding(assignedName) {
+    const exportedNames = this.exportBindingsByLocalName.get(assignedName);
+    if (!exportedNames || exportedNames.length === 0) {
+      return null;
+    }
+    return exportedNames.map((exportedName) => `exports.${exportedName}`).join(" = ");
+  }
+
+  /**
+   * Return all imported/exported names where we might be interested in whether usages of those
+   * names are shadowed.
+   */
+  getGlobalNames() {
+    return new Set([
+      ...this.identifierReplacements.keys(),
+      ...this.exportBindingsByLocalName.keys(),
+    ]);
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/HelperManager.js b/node_modules/sucrase/dist/esm/HelperManager.js
new file mode 100644
index 0000000..7964db3
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/HelperManager.js
@@ -0,0 +1,176 @@
+
+
+const HELPERS = {
+  require: `
+    import {createRequire as CREATE_REQUIRE_NAME} from "module";
+    const require = CREATE_REQUIRE_NAME(import.meta.url);
+  `,
+  interopRequireWildcard: `
+    function interopRequireWildcard(obj) {
+      if (obj && obj.__esModule) {
+        return obj;
+      } else {
+        var newObj = {};
+        if (obj != null) {
+          for (var key in obj) {
+            if (Object.prototype.hasOwnProperty.call(obj, key)) {
+              newObj[key] = obj[key];
+            }
+          }
+        }
+        newObj.default = obj;
+        return newObj;
+      }
+    }
+  `,
+  interopRequireDefault: `
+    function interopRequireDefault(obj) {
+      return obj && obj.__esModule ? obj : { default: obj };
+    }
+  `,
+  createNamedExportFrom: `
+    function createNamedExportFrom(obj, localName, importedName) {
+      Object.defineProperty(exports, localName, {enumerable: true, configurable: true, get: () => obj[importedName]});
+    }
+  `,
+  // Note that TypeScript and Babel do this differently; TypeScript does a simple existence
+  // check in the exports object and does a plain assignment, whereas Babel uses
+  // defineProperty and builds an object of explicitly-exported names so that star exports can
+  // always take lower precedence. For now, we do the easier TypeScript thing.
+  createStarExport: `
+    function createStarExport(obj) {
+      Object.keys(obj)
+        .filter((key) => key !== "default" && key !== "__esModule")
+        .forEach((key) => {
+          if (exports.hasOwnProperty(key)) {
+            return;
+          }
+          Object.defineProperty(exports, key, {enumerable: true, configurable: true, get: () => obj[key]});
+        });
+    }
+  `,
+  nullishCoalesce: `
+    function nullishCoalesce(lhs, rhsFn) {
+      if (lhs != null) {
+        return lhs;
+      } else {
+        return rhsFn();
+      }
+    }
+  `,
+  asyncNullishCoalesce: `
+    async function asyncNullishCoalesce(lhs, rhsFn) {
+      if (lhs != null) {
+        return lhs;
+      } else {
+        return await rhsFn();
+      }
+    }
+  `,
+  optionalChain: `
+    function optionalChain(ops) {
+      let lastAccessLHS = undefined;
+      let value = ops[0];
+      let i = 1;
+      while (i < ops.length) {
+        const op = ops[i];
+        const fn = ops[i + 1];
+        i += 2;
+        if ((op === 'optionalAccess' || op === 'optionalCall') && value == null) {
+          return undefined;
+        }
+        if (op === 'access' || op === 'optionalAccess') {
+          lastAccessLHS = value;
+          value = fn(value);
+        } else if (op === 'call' || op === 'optionalCall') {
+          value = fn((...args) => value.call(lastAccessLHS, ...args));
+          lastAccessLHS = undefined;
+        }
+      }
+      return value;
+    }
+  `,
+  asyncOptionalChain: `
+    async function asyncOptionalChain(ops) {
+      let lastAccessLHS = undefined;
+      let value = ops[0];
+      let i = 1;
+      while (i < ops.length) {
+        const op = ops[i];
+        const fn = ops[i + 1];
+        i += 2;
+        if ((op === 'optionalAccess' || op === 'optionalCall') && value == null) {
+          return undefined;
+        }
+        if (op === 'access' || op === 'optionalAccess') {
+          lastAccessLHS = value;
+          value = await fn(value);
+        } else if (op === 'call' || op === 'optionalCall') {
+          value = await fn((...args) => value.call(lastAccessLHS, ...args));
+          lastAccessLHS = undefined;
+        }
+      }
+      return value;
+    }
+  `,
+  optionalChainDelete: `
+    function optionalChainDelete(ops) {
+      const result = OPTIONAL_CHAIN_NAME(ops);
+      return result == null ? true : result;
+    }
+  `,
+  asyncOptionalChainDelete: `
+    async function asyncOptionalChainDelete(ops) {
+      const result = await ASYNC_OPTIONAL_CHAIN_NAME(ops);
+      return result == null ? true : result;
+    }
+  `,
+};
+
+export class HelperManager {
+  __init() {this.helperNames = {}}
+  __init2() {this.createRequireName = null}
+  constructor( nameManager) {;this.nameManager = nameManager;HelperManager.prototype.__init.call(this);HelperManager.prototype.__init2.call(this);}
+
+  getHelperName(baseName) {
+    let helperName = this.helperNames[baseName];
+    if (helperName) {
+      return helperName;
+    }
+    helperName = this.nameManager.claimFreeName(`_${baseName}`);
+    this.helperNames[baseName] = helperName;
+    return helperName;
+  }
+
+  emitHelpers() {
+    let resultCode = "";
+    if (this.helperNames.optionalChainDelete) {
+      this.getHelperName("optionalChain");
+    }
+    if (this.helperNames.asyncOptionalChainDelete) {
+      this.getHelperName("asyncOptionalChain");
+    }
+    for (const [baseName, helperCodeTemplate] of Object.entries(HELPERS)) {
+      const helperName = this.helperNames[baseName];
+      let helperCode = helperCodeTemplate;
+      if (baseName === "optionalChainDelete") {
+        helperCode = helperCode.replace("OPTIONAL_CHAIN_NAME", this.helperNames.optionalChain);
+      } else if (baseName === "asyncOptionalChainDelete") {
+        helperCode = helperCode.replace(
+          "ASYNC_OPTIONAL_CHAIN_NAME",
+          this.helperNames.asyncOptionalChain,
+        );
+      } else if (baseName === "require") {
+        if (this.createRequireName === null) {
+          this.createRequireName = this.nameManager.claimFreeName("_createRequire");
+        }
+        helperCode = helperCode.replace(/CREATE_REQUIRE_NAME/g, this.createRequireName);
+      }
+      if (helperName) {
+        resultCode += " ";
+        resultCode += helperCode.replace(baseName, helperName).replace(/\s+/g, " ").trim();
+      }
+    }
+    return resultCode;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/NameManager.js b/node_modules/sucrase/dist/esm/NameManager.js
new file mode 100644
index 0000000..47d2c9f
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/NameManager.js
@@ -0,0 +1,27 @@
+
+import getIdentifierNames from "./util/getIdentifierNames";
+
+export default class NameManager {
+    __init() {this.usedNames = new Set()}
+
+  constructor(code, tokens) {;NameManager.prototype.__init.call(this);
+    this.usedNames = new Set(getIdentifierNames(code, tokens));
+  }
+
+  claimFreeName(name) {
+    const newName = this.findFreeName(name);
+    this.usedNames.add(newName);
+    return newName;
+  }
+
+  findFreeName(name) {
+    if (!this.usedNames.has(name)) {
+      return name;
+    }
+    let suffixNum = 2;
+    while (this.usedNames.has(name + String(suffixNum))) {
+      suffixNum++;
+    }
+    return name + String(suffixNum);
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/Options-gen-types.js b/node_modules/sucrase/dist/esm/Options-gen-types.js
new file mode 100644
index 0000000..5c39c2c
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/Options-gen-types.js
@@ -0,0 +1,42 @@
+/**
+ * This module was automatically generated by `ts-interface-builder`
+ */
+import * as t from "ts-interface-checker";
+// tslint:disable:object-literal-key-quotes
+
+export const Transform = t.union(
+  t.lit("jsx"),
+  t.lit("typescript"),
+  t.lit("flow"),
+  t.lit("imports"),
+  t.lit("react-hot-loader"),
+  t.lit("jest"),
+);
+
+export const SourceMapOptions = t.iface([], {
+  compiledFilename: "string",
+});
+
+export const Options = t.iface([], {
+  transforms: t.array("Transform"),
+  disableESTransforms: t.opt("boolean"),
+  jsxRuntime: t.opt(t.union(t.lit("classic"), t.lit("automatic"), t.lit("preserve"))),
+  production: t.opt("boolean"),
+  jsxImportSource: t.opt("string"),
+  jsxPragma: t.opt("string"),
+  jsxFragmentPragma: t.opt("string"),
+  keepUnusedImports: t.opt("boolean"),
+  preserveDynamicImport: t.opt("boolean"),
+  injectCreateRequireForImportRequire: t.opt("boolean"),
+  enableLegacyTypeScriptModuleInterop: t.opt("boolean"),
+  enableLegacyBabel5ModuleInterop: t.opt("boolean"),
+  sourceMapOptions: t.opt("SourceMapOptions"),
+  filePath: t.opt("string"),
+});
+
+const exportedTypeSuite = {
+  Transform,
+  SourceMapOptions,
+  Options,
+};
+export default exportedTypeSuite;
diff --git a/node_modules/sucrase/dist/esm/Options.js b/node_modules/sucrase/dist/esm/Options.js
new file mode 100644
index 0000000..83ee83d
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/Options.js
@@ -0,0 +1,101 @@
+import {createCheckers} from "ts-interface-checker";
+
+import OptionsGenTypes from "./Options-gen-types";
+
+const {Options: OptionsChecker} = createCheckers(OptionsGenTypes);
+
+ 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
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+
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+
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+
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+
+
+
+
+
+
+
+
+
+
+
+
+export function validateOptions(options) {
+  OptionsChecker.strictCheck(options);
+}
diff --git a/node_modules/sucrase/dist/esm/TokenProcessor.js b/node_modules/sucrase/dist/esm/TokenProcessor.js
new file mode 100644
index 0000000..5335f23
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/TokenProcessor.js
@@ -0,0 +1,357 @@
+
+
+
+import { TokenType as tt} from "./parser/tokenizer/types";
+import isAsyncOperation from "./util/isAsyncOperation";
+
+
+
+
+
+
+
+
+
+
+
+export default class TokenProcessor {
+   __init() {this.resultCode = ""}
+  // Array mapping input token index to optional string index position in the
+  // output code.
+   __init2() {this.resultMappings = new Array(this.tokens.length)}
+   __init3() {this.tokenIndex = 0}
+
+  constructor(
+     code,
+     tokens,
+     isFlowEnabled,
+     disableESTransforms,
+     helperManager,
+  ) {;this.code = code;this.tokens = tokens;this.isFlowEnabled = isFlowEnabled;this.disableESTransforms = disableESTransforms;this.helperManager = helperManager;TokenProcessor.prototype.__init.call(this);TokenProcessor.prototype.__init2.call(this);TokenProcessor.prototype.__init3.call(this);}
+
+  /**
+   * Snapshot the token state in a way that can be restored later, useful for
+   * things like lookahead.
+   *
+   * resultMappings do not need to be copied since in all use cases, they will
+   * be overwritten anyway after restore.
+   */
+  snapshot() {
+    return {
+      resultCode: this.resultCode,
+      tokenIndex: this.tokenIndex,
+    };
+  }
+
+  restoreToSnapshot(snapshot) {
+    this.resultCode = snapshot.resultCode;
+    this.tokenIndex = snapshot.tokenIndex;
+  }
+
+  /**
+   * Remove and return the code generated since the snapshot, leaving the
+   * current token position in-place. Unlike most TokenProcessor operations,
+   * this operation can result in input/output line number mismatches because
+   * the removed code may contain newlines, so this operation should be used
+   * sparingly.
+   */
+  dangerouslyGetAndRemoveCodeSinceSnapshot(snapshot) {
+    const result = this.resultCode.slice(snapshot.resultCode.length);
+    this.resultCode = snapshot.resultCode;
+    return result;
+  }
+
+  reset() {
+    this.resultCode = "";
+    this.resultMappings = new Array(this.tokens.length);
+    this.tokenIndex = 0;
+  }
+
+  matchesContextualAtIndex(index, contextualKeyword) {
+    return (
+      this.matches1AtIndex(index, tt.name) &&
+      this.tokens[index].contextualKeyword === contextualKeyword
+    );
+  }
+
+  identifierNameAtIndex(index) {
+    // TODO: We need to process escapes since technically you can have unicode escapes in variable
+    // names.
+    return this.identifierNameForToken(this.tokens[index]);
+  }
+
+  identifierNameAtRelativeIndex(relativeIndex) {
+    return this.identifierNameForToken(this.tokenAtRelativeIndex(relativeIndex));
+  }
+
+  identifierName() {
+    return this.identifierNameForToken(this.currentToken());
+  }
+
+  identifierNameForToken(token) {
+    return this.code.slice(token.start, token.end);
+  }
+
+  rawCodeForToken(token) {
+    return this.code.slice(token.start, token.end);
+  }
+
+  stringValueAtIndex(index) {
+    return this.stringValueForToken(this.tokens[index]);
+  }
+
+  stringValue() {
+    return this.stringValueForToken(this.currentToken());
+  }
+
+  stringValueForToken(token) {
+    // This is used to identify when two imports are the same and to resolve TypeScript enum keys.
+    // Ideally we'd process escapes within the strings, but for now we pretty much take the raw
+    // code.
+    return this.code.slice(token.start + 1, token.end - 1);
+  }
+
+  matches1AtIndex(index, t1) {
+    return this.tokens[index].type === t1;
+  }
+
+  matches2AtIndex(index, t1, t2) {
+    return this.tokens[index].type === t1 && this.tokens[index + 1].type === t2;
+  }
+
+  matches3AtIndex(index, t1, t2, t3) {
+    return (
+      this.tokens[index].type === t1 &&
+      this.tokens[index + 1].type === t2 &&
+      this.tokens[index + 2].type === t3
+    );
+  }
+
+  matches1(t1) {
+    return this.tokens[this.tokenIndex].type === t1;
+  }
+
+  matches2(t1, t2) {
+    return this.tokens[this.tokenIndex].type === t1 && this.tokens[this.tokenIndex + 1].type === t2;
+  }
+
+  matches3(t1, t2, t3) {
+    return (
+      this.tokens[this.tokenIndex].type === t1 &&
+      this.tokens[this.tokenIndex + 1].type === t2 &&
+      this.tokens[this.tokenIndex + 2].type === t3
+    );
+  }
+
+  matches4(t1, t2, t3, t4) {
+    return (
+      this.tokens[this.tokenIndex].type === t1 &&
+      this.tokens[this.tokenIndex + 1].type === t2 &&
+      this.tokens[this.tokenIndex + 2].type === t3 &&
+      this.tokens[this.tokenIndex + 3].type === t4
+    );
+  }
+
+  matches5(t1, t2, t3, t4, t5) {
+    return (
+      this.tokens[this.tokenIndex].type === t1 &&
+      this.tokens[this.tokenIndex + 1].type === t2 &&
+      this.tokens[this.tokenIndex + 2].type === t3 &&
+      this.tokens[this.tokenIndex + 3].type === t4 &&
+      this.tokens[this.tokenIndex + 4].type === t5
+    );
+  }
+
+  matchesContextual(contextualKeyword) {
+    return this.matchesContextualAtIndex(this.tokenIndex, contextualKeyword);
+  }
+
+  matchesContextIdAndLabel(type, contextId) {
+    return this.matches1(type) && this.currentToken().contextId === contextId;
+  }
+
+  previousWhitespaceAndComments() {
+    let whitespaceAndComments = this.code.slice(
+      this.tokenIndex > 0 ? this.tokens[this.tokenIndex - 1].end : 0,
+      this.tokenIndex < this.tokens.length ? this.tokens[this.tokenIndex].start : this.code.length,
+    );
+    if (this.isFlowEnabled) {
+      whitespaceAndComments = whitespaceAndComments.replace(/@flow/g, "");
+    }
+    return whitespaceAndComments;
+  }
+
+  replaceToken(newCode) {
+    this.resultCode += this.previousWhitespaceAndComments();
+    this.appendTokenPrefix();
+    this.resultMappings[this.tokenIndex] = this.resultCode.length;
+    this.resultCode += newCode;
+    this.appendTokenSuffix();
+    this.tokenIndex++;
+  }
+
+  replaceTokenTrimmingLeftWhitespace(newCode) {
+    this.resultCode += this.previousWhitespaceAndComments().replace(/[^\r\n]/g, "");
+    this.appendTokenPrefix();
+    this.resultMappings[this.tokenIndex] = this.resultCode.length;
+    this.resultCode += newCode;
+    this.appendTokenSuffix();
+    this.tokenIndex++;
+  }
+
+  removeInitialToken() {
+    this.replaceToken("");
+  }
+
+  removeToken() {
+    this.replaceTokenTrimmingLeftWhitespace("");
+  }
+
+  /**
+   * Remove all code until the next }, accounting for balanced braces.
+   */
+  removeBalancedCode() {
+    let braceDepth = 0;
+    while (!this.isAtEnd()) {
+      if (this.matches1(tt.braceL)) {
+        braceDepth++;
+      } else if (this.matches1(tt.braceR)) {
+        if (braceDepth === 0) {
+          return;
+        }
+        braceDepth--;
+      }
+      this.removeToken();
+    }
+  }
+
+  copyExpectedToken(tokenType) {
+    if (this.tokens[this.tokenIndex].type !== tokenType) {
+      throw new Error(`Expected token ${tokenType}`);
+    }
+    this.copyToken();
+  }
+
+  copyToken() {
+    this.resultCode += this.previousWhitespaceAndComments();
+    this.appendTokenPrefix();
+    this.resultMappings[this.tokenIndex] = this.resultCode.length;
+    this.resultCode += this.code.slice(
+      this.tokens[this.tokenIndex].start,
+      this.tokens[this.tokenIndex].end,
+    );
+    this.appendTokenSuffix();
+    this.tokenIndex++;
+  }
+
+  copyTokenWithPrefix(prefix) {
+    this.resultCode += this.previousWhitespaceAndComments();
+    this.appendTokenPrefix();
+    this.resultCode += prefix;
+    this.resultMappings[this.tokenIndex] = this.resultCode.length;
+    this.resultCode += this.code.slice(
+      this.tokens[this.tokenIndex].start,
+      this.tokens[this.tokenIndex].end,
+    );
+    this.appendTokenSuffix();
+    this.tokenIndex++;
+  }
+
+   appendTokenPrefix() {
+    const token = this.currentToken();
+    if (token.numNullishCoalesceStarts || token.isOptionalChainStart) {
+      token.isAsyncOperation = isAsyncOperation(this);
+    }
+    if (this.disableESTransforms) {
+      return;
+    }
+    if (token.numNullishCoalesceStarts) {
+      for (let i = 0; i < token.numNullishCoalesceStarts; i++) {
+        if (token.isAsyncOperation) {
+          this.resultCode += "await ";
+          this.resultCode += this.helperManager.getHelperName("asyncNullishCoalesce");
+        } else {
+          this.resultCode += this.helperManager.getHelperName("nullishCoalesce");
+        }
+        this.resultCode += "(";
+      }
+    }
+    if (token.isOptionalChainStart) {
+      if (token.isAsyncOperation) {
+        this.resultCode += "await ";
+      }
+      if (this.tokenIndex > 0 && this.tokenAtRelativeIndex(-1).type === tt._delete) {
+        if (token.isAsyncOperation) {
+          this.resultCode += this.helperManager.getHelperName("asyncOptionalChainDelete");
+        } else {
+          this.resultCode += this.helperManager.getHelperName("optionalChainDelete");
+        }
+      } else if (token.isAsyncOperation) {
+        this.resultCode += this.helperManager.getHelperName("asyncOptionalChain");
+      } else {
+        this.resultCode += this.helperManager.getHelperName("optionalChain");
+      }
+      this.resultCode += "([";
+    }
+  }
+
+   appendTokenSuffix() {
+    const token = this.currentToken();
+    if (token.isOptionalChainEnd && !this.disableESTransforms) {
+      this.resultCode += "])";
+    }
+    if (token.numNullishCoalesceEnds && !this.disableESTransforms) {
+      for (let i = 0; i < token.numNullishCoalesceEnds; i++) {
+        this.resultCode += "))";
+      }
+    }
+  }
+
+  appendCode(code) {
+    this.resultCode += code;
+  }
+
+  currentToken() {
+    return this.tokens[this.tokenIndex];
+  }
+
+  currentTokenCode() {
+    const token = this.currentToken();
+    return this.code.slice(token.start, token.end);
+  }
+
+  tokenAtRelativeIndex(relativeIndex) {
+    return this.tokens[this.tokenIndex + relativeIndex];
+  }
+
+  currentIndex() {
+    return this.tokenIndex;
+  }
+
+  /**
+   * Move to the next token. Only suitable in preprocessing steps. When
+   * generating new code, you should use copyToken or removeToken.
+   */
+  nextToken() {
+    if (this.tokenIndex === this.tokens.length) {
+      throw new Error("Unexpectedly reached end of input.");
+    }
+    this.tokenIndex++;
+  }
+
+  previousToken() {
+    this.tokenIndex--;
+  }
+
+  finish() {
+    if (this.tokenIndex !== this.tokens.length) {
+      throw new Error("Tried to finish processing tokens before reaching the end.");
+    }
+    this.resultCode += this.previousWhitespaceAndComments();
+    return {code: this.resultCode, mappings: this.resultMappings};
+  }
+
+  isAtEnd() {
+    return this.tokenIndex === this.tokens.length;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/cli.js b/node_modules/sucrase/dist/esm/cli.js
new file mode 100644
index 0000000..93fbb6e
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/cli.js
@@ -0,0 +1,320 @@
+/* eslint-disable no-console */
+import commander from "commander";
+import globCb from "glob";
+import {exists, mkdir, readdir, readFile, stat, writeFile} from "mz/fs";
+import {dirname, join, relative} from "path";
+import {promisify} from "util";
+
+import { transform} from "./index";
+
+
+
+
+
+
+
+
+
+
+
+const glob = promisify(globCb);
+
+export default function run() {
+  commander
+    .description(`Sucrase: super-fast Babel alternative.`)
+    .usage("[options] <srcDir>")
+    .option(
+      "-d, --out-dir <out>",
+      "Compile an input directory of modules into an output directory.",
+    )
+    .option(
+      "-p, --project <dir>",
+      "Compile a TypeScript project, will read from tsconfig.json in <dir>",
+    )
+    .option("--out-extension <extension>", "File extension to use for all output files.", "js")
+    .option("--exclude-dirs <paths>", "Names of directories that should not be traversed.")
+    .option("-q, --quiet", "Don't print the names of converted files.")
+    .option("-t, --transforms <transforms>", "Comma-separated list of transforms to run.")
+    .option("--disable-es-transforms", "Opt out of all ES syntax transforms.")
+    .option("--jsx-runtime <string>", "Transformation mode for the JSX transform.")
+    .option("--production", "Disable debugging information from JSX in output.")
+    .option(
+      "--jsx-import-source <string>",
+      "Automatic JSX transform import path prefix, defaults to `React.Fragment`.",
+    )
+    .option(
+      "--jsx-pragma <string>",
+      "Classic JSX transform element creation function, defaults to `React.createElement`.",
+    )
+    .option(
+      "--jsx-fragment-pragma <string>",
+      "Classic JSX transform fragment component, defaults to `React.Fragment`.",
+    )
+    .option("--keep-unused-imports", "Disable automatic removal of type-only imports/exports.")
+    .option("--preserve-dynamic-import", "Don't transpile dynamic import() to require.")
+    .option(
+      "--inject-create-require-for-import-require",
+      "Use `createRequire` when transpiling TS `import = require` to ESM.",
+    )
+    .option(
+      "--enable-legacy-typescript-module-interop",
+      "Use default TypeScript ESM/CJS interop strategy.",
+    )
+    .option("--enable-legacy-babel5-module-interop", "Use Babel 5 ESM/CJS interop strategy.")
+    .parse(process.argv);
+
+  if (commander.project) {
+    if (
+      commander.outDir ||
+      commander.transforms ||
+      commander.args[0] ||
+      commander.enableLegacyTypescriptModuleInterop
+    ) {
+      console.error(
+        "If TypeScript project is specified, out directory, transforms, source " +
+          "directory, and --enable-legacy-typescript-module-interop may not be specified.",
+      );
+      process.exit(1);
+    }
+  } else {
+    if (!commander.outDir) {
+      console.error("Out directory is required");
+      process.exit(1);
+    }
+
+    if (!commander.transforms) {
+      console.error("Transforms option is required.");
+      process.exit(1);
+    }
+
+    if (!commander.args[0]) {
+      console.error("Source directory is required.");
+      process.exit(1);
+    }
+  }
+
+  const options = {
+    outDirPath: commander.outDir,
+    srcDirPath: commander.args[0],
+    project: commander.project,
+    outExtension: commander.outExtension,
+    excludeDirs: commander.excludeDirs ? commander.excludeDirs.split(",") : [],
+    quiet: commander.quiet,
+    sucraseOptions: {
+      transforms: commander.transforms ? commander.transforms.split(",") : [],
+      disableESTransforms: commander.disableEsTransforms,
+      jsxRuntime: commander.jsxRuntime,
+      production: commander.production,
+      jsxImportSource: commander.jsxImportSource,
+      jsxPragma: commander.jsxPragma || "React.createElement",
+      jsxFragmentPragma: commander.jsxFragmentPragma || "React.Fragment",
+      keepUnusedImports: commander.keepUnusedImports,
+      preserveDynamicImport: commander.preserveDynamicImport,
+      injectCreateRequireForImportRequire: commander.injectCreateRequireForImportRequire,
+      enableLegacyTypeScriptModuleInterop: commander.enableLegacyTypescriptModuleInterop,
+      enableLegacyBabel5ModuleInterop: commander.enableLegacyBabel5ModuleInterop,
+    },
+  };
+
+  buildDirectory(options).catch((e) => {
+    process.exitCode = 1;
+    console.error(e);
+  });
+}
+
+
+
+
+
+
+async function findFiles(options) {
+  const outDirPath = options.outDirPath;
+  const srcDirPath = options.srcDirPath;
+
+  const extensions = options.sucraseOptions.transforms.includes("typescript")
+    ? [".ts", ".tsx"]
+    : [".js", ".jsx"];
+
+  if (!(await exists(outDirPath))) {
+    await mkdir(outDirPath);
+  }
+
+  const outArr = [];
+  for (const child of await readdir(srcDirPath)) {
+    if (["node_modules", ".git"].includes(child) || options.excludeDirs.includes(child)) {
+      continue;
+    }
+    const srcChildPath = join(srcDirPath, child);
+    const outChildPath = join(outDirPath, child);
+    if ((await stat(srcChildPath)).isDirectory()) {
+      const innerOptions = {...options};
+      innerOptions.srcDirPath = srcChildPath;
+      innerOptions.outDirPath = outChildPath;
+      const innerFiles = await findFiles(innerOptions);
+      outArr.push(...innerFiles);
+    } else if (extensions.some((ext) => srcChildPath.endsWith(ext))) {
+      const outPath = outChildPath.replace(/\.\w+$/, `.${options.outExtension}`);
+      outArr.push({
+        srcPath: srcChildPath,
+        outPath,
+      });
+    }
+  }
+
+  return outArr;
+}
+
+async function runGlob(options) {
+  const tsConfigPath = join(options.project, "tsconfig.json");
+
+  let str;
+  try {
+    str = await readFile(tsConfigPath, "utf8");
+  } catch (err) {
+    console.error("Could not find project tsconfig.json");
+    console.error(`  --project=${options.project}`);
+    console.error(err);
+    process.exit(1);
+  }
+  const json = JSON.parse(str);
+
+  const foundFiles = [];
+
+  const files = json.files;
+  const include = json.include;
+
+  const absProject = join(process.cwd(), options.project);
+  const outDirs = [];
+
+  if (!(await exists(options.outDirPath))) {
+    await mkdir(options.outDirPath);
+  }
+
+  if (files) {
+    for (const file of files) {
+      if (file.endsWith(".d.ts")) {
+        continue;
+      }
+      if (!file.endsWith(".ts") && !file.endsWith(".js")) {
+        continue;
+      }
+
+      const srcFile = join(absProject, file);
+      const outFile = join(options.outDirPath, file);
+      const outPath = outFile.replace(/\.\w+$/, `.${options.outExtension}`);
+
+      const outDir = dirname(outPath);
+      if (!outDirs.includes(outDir)) {
+        outDirs.push(outDir);
+      }
+
+      foundFiles.push({
+        srcPath: srcFile,
+        outPath,
+      });
+    }
+  }
+  if (include) {
+    for (const pattern of include) {
+      const globFiles = await glob(join(absProject, pattern));
+      for (const file of globFiles) {
+        if (!file.endsWith(".ts") && !file.endsWith(".js")) {
+          continue;
+        }
+        if (file.endsWith(".d.ts")) {
+          continue;
+        }
+
+        const relativeFile = relative(absProject, file);
+        const outFile = join(options.outDirPath, relativeFile);
+        const outPath = outFile.replace(/\.\w+$/, `.${options.outExtension}`);
+
+        const outDir = dirname(outPath);
+        if (!outDirs.includes(outDir)) {
+          outDirs.push(outDir);
+        }
+
+        foundFiles.push({
+          srcPath: file,
+          outPath,
+        });
+      }
+    }
+  }
+
+  for (const outDirPath of outDirs) {
+    if (!(await exists(outDirPath))) {
+      await mkdir(outDirPath);
+    }
+  }
+
+  // TODO: read exclude
+
+  return foundFiles;
+}
+
+async function updateOptionsFromProject(options) {
+  /**
+   * Read the project information and assign the following.
+   *  - outDirPath
+   *  - transform: imports
+   *  - transform: typescript
+   *  - enableLegacyTypescriptModuleInterop: true/false.
+   */
+
+  const tsConfigPath = join(options.project, "tsconfig.json");
+
+  let str;
+  try {
+    str = await readFile(tsConfigPath, "utf8");
+  } catch (err) {
+    console.error("Could not find project tsconfig.json");
+    console.error(`  --project=${options.project}`);
+    console.error(err);
+    process.exit(1);
+  }
+  const json = JSON.parse(str);
+  const sucraseOpts = options.sucraseOptions;
+  if (!sucraseOpts.transforms.includes("typescript")) {
+    sucraseOpts.transforms.push("typescript");
+  }
+
+  const compilerOpts = json.compilerOptions;
+  if (compilerOpts.outDir) {
+    options.outDirPath = join(process.cwd(), options.project, compilerOpts.outDir);
+  }
+  if (compilerOpts.esModuleInterop !== true) {
+    sucraseOpts.enableLegacyTypeScriptModuleInterop = true;
+  }
+  if (compilerOpts.module === "commonjs") {
+    if (!sucraseOpts.transforms.includes("imports")) {
+      sucraseOpts.transforms.push("imports");
+    }
+  }
+}
+
+async function buildDirectory(options) {
+  let files;
+  if (options.outDirPath && options.srcDirPath) {
+    files = await findFiles(options);
+  } else if (options.project) {
+    await updateOptionsFromProject(options);
+    files = await runGlob(options);
+  } else {
+    console.error("Project or Source directory required.");
+    process.exit(1);
+  }
+
+  for (const file of files) {
+    await buildFile(file.srcPath, file.outPath, options);
+  }
+}
+
+async function buildFile(srcPath, outPath, options) {
+  if (!options.quiet) {
+    console.log(`${srcPath} -> ${outPath}`);
+  }
+  const code = (await readFile(srcPath)).toString();
+  const transformedCode = transform(code, {...options.sucraseOptions, filePath: srcPath}).code;
+  await writeFile(outPath, transformedCode);
+}
diff --git a/node_modules/sucrase/dist/esm/computeSourceMap.js b/node_modules/sucrase/dist/esm/computeSourceMap.js
new file mode 100644
index 0000000..699ea78
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/computeSourceMap.js
@@ -0,0 +1,89 @@
+import {GenMapping, maybeAddSegment, toEncodedMap} from "@jridgewell/gen-mapping";
+
+
+
+import {charCodes} from "./parser/util/charcodes";
+
+
+
+
+
+
+
+
+
+
+
+
+/**
+ * Generate a source map indicating that each line maps directly to the original line,
+ * with the tokens in their new positions.
+ */
+export default function computeSourceMap(
+  {code: generatedCode, mappings: rawMappings},
+  filePath,
+  options,
+  source,
+  tokens,
+) {
+  const sourceColumns = computeSourceColumns(source, tokens);
+  const map = new GenMapping({file: options.compiledFilename});
+  let tokenIndex = 0;
+  // currentMapping is the output source index for the current input token being
+  // considered.
+  let currentMapping = rawMappings[0];
+  while (currentMapping === undefined && tokenIndex < rawMappings.length - 1) {
+    tokenIndex++;
+    currentMapping = rawMappings[tokenIndex];
+  }
+  let line = 0;
+  let lineStart = 0;
+  if (currentMapping !== lineStart) {
+    maybeAddSegment(map, line, 0, filePath, line, 0);
+  }
+  for (let i = 0; i < generatedCode.length; i++) {
+    if (i === currentMapping) {
+      const genColumn = currentMapping - lineStart;
+      const sourceColumn = sourceColumns[tokenIndex];
+      maybeAddSegment(map, line, genColumn, filePath, line, sourceColumn);
+      while (
+        (currentMapping === i || currentMapping === undefined) &&
+        tokenIndex < rawMappings.length - 1
+      ) {
+        tokenIndex++;
+        currentMapping = rawMappings[tokenIndex];
+      }
+    }
+    if (generatedCode.charCodeAt(i) === charCodes.lineFeed) {
+      line++;
+      lineStart = i + 1;
+      if (currentMapping !== lineStart) {
+        maybeAddSegment(map, line, 0, filePath, line, 0);
+      }
+    }
+  }
+  const {sourceRoot, sourcesContent, ...sourceMap} = toEncodedMap(map);
+  return sourceMap ;
+}
+
+/**
+ * Create an array mapping each token index to the 0-based column of the start
+ * position of the token.
+ */
+function computeSourceColumns(code, tokens) {
+  const sourceColumns = new Array(tokens.length);
+  let tokenIndex = 0;
+  let currentMapping = tokens[tokenIndex].start;
+  let lineStart = 0;
+  for (let i = 0; i < code.length; i++) {
+    if (i === currentMapping) {
+      sourceColumns[tokenIndex] = currentMapping - lineStart;
+      tokenIndex++;
+      currentMapping = tokens[tokenIndex].start;
+    }
+    if (code.charCodeAt(i) === charCodes.lineFeed) {
+      lineStart = i + 1;
+    }
+  }
+  return sourceColumns;
+}
diff --git a/node_modules/sucrase/dist/esm/identifyShadowedGlobals.js b/node_modules/sucrase/dist/esm/identifyShadowedGlobals.js
new file mode 100644
index 0000000..f953633
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/identifyShadowedGlobals.js
@@ -0,0 +1,98 @@
+import {
+  isBlockScopedDeclaration,
+  isFunctionScopedDeclaration,
+  isNonTopLevelDeclaration,
+} from "./parser/tokenizer";
+
+import {TokenType as tt} from "./parser/tokenizer/types";
+
+
+/**
+ * Traverse the given tokens and modify them if necessary to indicate that some names shadow global
+ * variables.
+ */
+export default function identifyShadowedGlobals(
+  tokens,
+  scopes,
+  globalNames,
+) {
+  if (!hasShadowedGlobals(tokens, globalNames)) {
+    return;
+  }
+  markShadowedGlobals(tokens, scopes, globalNames);
+}
+
+/**
+ * We can do a fast up-front check to see if there are any declarations to global names. If not,
+ * then there's no point in computing scope assignments.
+ */
+// Exported for testing.
+export function hasShadowedGlobals(tokens, globalNames) {
+  for (const token of tokens.tokens) {
+    if (
+      token.type === tt.name &&
+      !token.isType &&
+      isNonTopLevelDeclaration(token) &&
+      globalNames.has(tokens.identifierNameForToken(token))
+    ) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function markShadowedGlobals(
+  tokens,
+  scopes,
+  globalNames,
+) {
+  const scopeStack = [];
+  let scopeIndex = scopes.length - 1;
+  // Scopes were generated at completion time, so they're sorted by end index, so we can maintain a
+  // good stack by going backwards through them.
+  for (let i = tokens.tokens.length - 1; ; i--) {
+    while (scopeStack.length > 0 && scopeStack[scopeStack.length - 1].startTokenIndex === i + 1) {
+      scopeStack.pop();
+    }
+    while (scopeIndex >= 0 && scopes[scopeIndex].endTokenIndex === i + 1) {
+      scopeStack.push(scopes[scopeIndex]);
+      scopeIndex--;
+    }
+    // Process scopes after the last iteration so we can make sure we pop all of them.
+    if (i < 0) {
+      break;
+    }
+
+    const token = tokens.tokens[i];
+    const name = tokens.identifierNameForToken(token);
+    if (scopeStack.length > 1 && !token.isType && token.type === tt.name && globalNames.has(name)) {
+      if (isBlockScopedDeclaration(token)) {
+        markShadowedForScope(scopeStack[scopeStack.length - 1], tokens, name);
+      } else if (isFunctionScopedDeclaration(token)) {
+        let stackIndex = scopeStack.length - 1;
+        while (stackIndex > 0 && !scopeStack[stackIndex].isFunctionScope) {
+          stackIndex--;
+        }
+        if (stackIndex < 0) {
+          throw new Error("Did not find parent function scope.");
+        }
+        markShadowedForScope(scopeStack[stackIndex], tokens, name);
+      }
+    }
+  }
+  if (scopeStack.length > 0) {
+    throw new Error("Expected empty scope stack after processing file.");
+  }
+}
+
+function markShadowedForScope(scope, tokens, name) {
+  for (let i = scope.startTokenIndex; i < scope.endTokenIndex; i++) {
+    const token = tokens.tokens[i];
+    if (
+      (token.type === tt.name || token.type === tt.jsxName) &&
+      tokens.identifierNameForToken(token) === name
+    ) {
+      token.shadowsGlobal = true;
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/index.js b/node_modules/sucrase/dist/esm/index.js
new file mode 100644
index 0000000..e902716
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/index.js
@@ -0,0 +1,133 @@
+import CJSImportProcessor from "./CJSImportProcessor";
+import computeSourceMap, {} from "./computeSourceMap";
+import {HelperManager} from "./HelperManager";
+import identifyShadowedGlobals from "./identifyShadowedGlobals";
+import NameManager from "./NameManager";
+import {validateOptions} from "./Options";
+
+import {parse} from "./parser";
+
+import TokenProcessor from "./TokenProcessor";
+import RootTransformer from "./transformers/RootTransformer";
+import formatTokens from "./util/formatTokens";
+import getTSImportedNames from "./util/getTSImportedNames";
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+;
+
+export function getVersion() {
+  /* istanbul ignore next */
+  return "3.34.0";
+}
+
+export function transform(code, options) {
+  validateOptions(options);
+  try {
+    const sucraseContext = getSucraseContext(code, options);
+    const transformer = new RootTransformer(
+      sucraseContext,
+      options.transforms,
+      Boolean(options.enableLegacyBabel5ModuleInterop),
+      options,
+    );
+    const transformerResult = transformer.transform();
+    let result = {code: transformerResult.code};
+    if (options.sourceMapOptions) {
+      if (!options.filePath) {
+        throw new Error("filePath must be specified when generating a source map.");
+      }
+      result = {
+        ...result,
+        sourceMap: computeSourceMap(
+          transformerResult,
+          options.filePath,
+          options.sourceMapOptions,
+          code,
+          sucraseContext.tokenProcessor.tokens,
+        ),
+      };
+    }
+    return result;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  } catch (e) {
+    if (options.filePath) {
+      e.message = `Error transforming ${options.filePath}: ${e.message}`;
+    }
+    throw e;
+  }
+}
+
+/**
+ * Return a string representation of the sucrase tokens, mostly useful for
+ * diagnostic purposes.
+ */
+export function getFormattedTokens(code, options) {
+  const tokens = getSucraseContext(code, options).tokenProcessor.tokens;
+  return formatTokens(code, tokens);
+}
+
+/**
+ * Call into the parser/tokenizer and do some further preprocessing:
+ * - Come up with a set of used names so that we can assign new names.
+ * - Preprocess all import/export statements so we know which globals we are interested in.
+ * - Compute situations where any of those globals are shadowed.
+ *
+ * In the future, some of these preprocessing steps can be skipped based on what actual work is
+ * being done.
+ */
+function getSucraseContext(code, options) {
+  const isJSXEnabled = options.transforms.includes("jsx");
+  const isTypeScriptEnabled = options.transforms.includes("typescript");
+  const isFlowEnabled = options.transforms.includes("flow");
+  const disableESTransforms = options.disableESTransforms === true;
+  const file = parse(code, isJSXEnabled, isTypeScriptEnabled, isFlowEnabled);
+  const tokens = file.tokens;
+  const scopes = file.scopes;
+
+  const nameManager = new NameManager(code, tokens);
+  const helperManager = new HelperManager(nameManager);
+  const tokenProcessor = new TokenProcessor(
+    code,
+    tokens,
+    isFlowEnabled,
+    disableESTransforms,
+    helperManager,
+  );
+  const enableLegacyTypeScriptModuleInterop = Boolean(options.enableLegacyTypeScriptModuleInterop);
+
+  let importProcessor = null;
+  if (options.transforms.includes("imports")) {
+    importProcessor = new CJSImportProcessor(
+      nameManager,
+      tokenProcessor,
+      enableLegacyTypeScriptModuleInterop,
+      options,
+      options.transforms.includes("typescript"),
+      Boolean(options.keepUnusedImports),
+      helperManager,
+    );
+    importProcessor.preprocessTokens();
+    // We need to mark shadowed globals after processing imports so we know that the globals are,
+    // but before type-only import pruning, since that relies on shadowing information.
+    identifyShadowedGlobals(tokenProcessor, scopes, importProcessor.getGlobalNames());
+    if (options.transforms.includes("typescript") && !options.keepUnusedImports) {
+      importProcessor.pruneTypeOnlyImports();
+    }
+  } else if (options.transforms.includes("typescript") && !options.keepUnusedImports) {
+    // Shadowed global detection is needed for TS implicit elision of imported names.
+    identifyShadowedGlobals(tokenProcessor, scopes, getTSImportedNames(tokenProcessor));
+  }
+  return {tokenProcessor, scopes, nameManager, importProcessor, helperManager};
+}
diff --git a/node_modules/sucrase/dist/esm/parser/index.js b/node_modules/sucrase/dist/esm/parser/index.js
new file mode 100644
index 0000000..5074ae4
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/index.js
@@ -0,0 +1,31 @@
+
+
+import {augmentError, initParser, state} from "./traverser/base";
+import {parseFile} from "./traverser/index";
+
+export class File {
+  
+  
+
+  constructor(tokens, scopes) {
+    this.tokens = tokens;
+    this.scopes = scopes;
+  }
+}
+
+export function parse(
+  input,
+  isJSXEnabled,
+  isTypeScriptEnabled,
+  isFlowEnabled,
+) {
+  if (isFlowEnabled && isTypeScriptEnabled) {
+    throw new Error("Cannot combine flow and typescript plugins.");
+  }
+  initParser(input, isJSXEnabled, isTypeScriptEnabled, isFlowEnabled);
+  const result = parseFile();
+  if (state.error) {
+    throw augmentError(state.error);
+  }
+  return result;
+}
diff --git a/node_modules/sucrase/dist/esm/parser/plugins/flow.js b/node_modules/sucrase/dist/esm/parser/plugins/flow.js
new file mode 100644
index 0000000..66295d1
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/plugins/flow.js
@@ -0,0 +1,1105 @@
+/* eslint max-len: 0 */
+
+import {
+  eat,
+  lookaheadType,
+  lookaheadTypeAndKeyword,
+  match,
+  next,
+  popTypeContext,
+  pushTypeContext,
+
+} from "../tokenizer/index";
+import {ContextualKeyword} from "../tokenizer/keywords";
+import {TokenType, TokenType as tt} from "../tokenizer/types";
+import {input, state} from "../traverser/base";
+import {
+  baseParseMaybeAssign,
+  baseParseSubscript,
+  baseParseSubscripts,
+  parseArrow,
+  parseArrowExpression,
+  parseCallExpressionArguments,
+  parseExprAtom,
+  parseExpression,
+  parseFunctionBody,
+  parseIdentifier,
+  parseLiteral,
+
+} from "../traverser/expression";
+import {
+  baseParseExportStar,
+  parseExport,
+  parseExportFrom,
+  parseExportSpecifiers,
+  parseFunctionParams,
+  parseImport,
+  parseStatement,
+} from "../traverser/statement";
+import {
+  canInsertSemicolon,
+  eatContextual,
+  expect,
+  expectContextual,
+  isContextual,
+  isLookaheadContextual,
+  semicolon,
+  unexpected,
+} from "../traverser/util";
+
+function isMaybeDefaultImport(lookahead) {
+  return (
+    (lookahead.type === tt.name || !!(lookahead.type & TokenType.IS_KEYWORD)) &&
+    lookahead.contextualKeyword !== ContextualKeyword._from
+  );
+}
+
+function flowParseTypeInitialiser(tok) {
+  const oldIsType = pushTypeContext(0);
+  expect(tok || tt.colon);
+  flowParseType();
+  popTypeContext(oldIsType);
+}
+
+function flowParsePredicate() {
+  expect(tt.modulo);
+  expectContextual(ContextualKeyword._checks);
+  if (eat(tt.parenL)) {
+    parseExpression();
+    expect(tt.parenR);
+  }
+}
+
+function flowParseTypeAndPredicateInitialiser() {
+  const oldIsType = pushTypeContext(0);
+  expect(tt.colon);
+  if (match(tt.modulo)) {
+    flowParsePredicate();
+  } else {
+    flowParseType();
+    if (match(tt.modulo)) {
+      flowParsePredicate();
+    }
+  }
+  popTypeContext(oldIsType);
+}
+
+function flowParseDeclareClass() {
+  next();
+  flowParseInterfaceish(/* isClass */ true);
+}
+
+function flowParseDeclareFunction() {
+  next();
+  parseIdentifier();
+
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+  }
+
+  expect(tt.parenL);
+  flowParseFunctionTypeParams();
+  expect(tt.parenR);
+
+  flowParseTypeAndPredicateInitialiser();
+
+  semicolon();
+}
+
+function flowParseDeclare() {
+  if (match(tt._class)) {
+    flowParseDeclareClass();
+  } else if (match(tt._function)) {
+    flowParseDeclareFunction();
+  } else if (match(tt._var)) {
+    flowParseDeclareVariable();
+  } else if (eatContextual(ContextualKeyword._module)) {
+    if (eat(tt.dot)) {
+      flowParseDeclareModuleExports();
+    } else {
+      flowParseDeclareModule();
+    }
+  } else if (isContextual(ContextualKeyword._type)) {
+    flowParseDeclareTypeAlias();
+  } else if (isContextual(ContextualKeyword._opaque)) {
+    flowParseDeclareOpaqueType();
+  } else if (isContextual(ContextualKeyword._interface)) {
+    flowParseDeclareInterface();
+  } else if (match(tt._export)) {
+    flowParseDeclareExportDeclaration();
+  } else {
+    unexpected();
+  }
+}
+
+function flowParseDeclareVariable() {
+  next();
+  flowParseTypeAnnotatableIdentifier();
+  semicolon();
+}
+
+function flowParseDeclareModule() {
+  if (match(tt.string)) {
+    parseExprAtom();
+  } else {
+    parseIdentifier();
+  }
+
+  expect(tt.braceL);
+  while (!match(tt.braceR) && !state.error) {
+    if (match(tt._import)) {
+      next();
+      parseImport();
+    } else {
+      unexpected();
+    }
+  }
+  expect(tt.braceR);
+}
+
+function flowParseDeclareExportDeclaration() {
+  expect(tt._export);
+
+  if (eat(tt._default)) {
+    if (match(tt._function) || match(tt._class)) {
+      // declare export default class ...
+      // declare export default function ...
+      flowParseDeclare();
+    } else {
+      // declare export default [type];
+      flowParseType();
+      semicolon();
+    }
+  } else if (
+    match(tt._var) || // declare export var ...
+    match(tt._function) || // declare export function ...
+    match(tt._class) || // declare export class ...
+    isContextual(ContextualKeyword._opaque) // declare export opaque ..
+  ) {
+    flowParseDeclare();
+  } else if (
+    match(tt.star) || // declare export * from ''
+    match(tt.braceL) || // declare export {} ...
+    isContextual(ContextualKeyword._interface) || // declare export interface ...
+    isContextual(ContextualKeyword._type) || // declare export type ...
+    isContextual(ContextualKeyword._opaque) // declare export opaque type ...
+  ) {
+    parseExport();
+  } else {
+    unexpected();
+  }
+}
+
+function flowParseDeclareModuleExports() {
+  expectContextual(ContextualKeyword._exports);
+  flowParseTypeAnnotation();
+  semicolon();
+}
+
+function flowParseDeclareTypeAlias() {
+  next();
+  flowParseTypeAlias();
+}
+
+function flowParseDeclareOpaqueType() {
+  next();
+  flowParseOpaqueType(true);
+}
+
+function flowParseDeclareInterface() {
+  next();
+  flowParseInterfaceish();
+}
+
+// Interfaces
+
+function flowParseInterfaceish(isClass = false) {
+  flowParseRestrictedIdentifier();
+
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+  }
+
+  if (eat(tt._extends)) {
+    do {
+      flowParseInterfaceExtends();
+    } while (!isClass && eat(tt.comma));
+  }
+
+  if (isContextual(ContextualKeyword._mixins)) {
+    next();
+    do {
+      flowParseInterfaceExtends();
+    } while (eat(tt.comma));
+  }
+
+  if (isContextual(ContextualKeyword._implements)) {
+    next();
+    do {
+      flowParseInterfaceExtends();
+    } while (eat(tt.comma));
+  }
+
+  flowParseObjectType(isClass, false, isClass);
+}
+
+function flowParseInterfaceExtends() {
+  flowParseQualifiedTypeIdentifier(false);
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterInstantiation();
+  }
+}
+
+function flowParseInterface() {
+  flowParseInterfaceish();
+}
+
+function flowParseRestrictedIdentifier() {
+  parseIdentifier();
+}
+
+function flowParseTypeAlias() {
+  flowParseRestrictedIdentifier();
+
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+  }
+
+  flowParseTypeInitialiser(tt.eq);
+  semicolon();
+}
+
+function flowParseOpaqueType(declare) {
+  expectContextual(ContextualKeyword._type);
+  flowParseRestrictedIdentifier();
+
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+  }
+
+  // Parse the supertype
+  if (match(tt.colon)) {
+    flowParseTypeInitialiser(tt.colon);
+  }
+
+  if (!declare) {
+    flowParseTypeInitialiser(tt.eq);
+  }
+  semicolon();
+}
+
+function flowParseTypeParameter() {
+  flowParseVariance();
+  flowParseTypeAnnotatableIdentifier();
+
+  if (eat(tt.eq)) {
+    flowParseType();
+  }
+}
+
+export function flowParseTypeParameterDeclaration() {
+  const oldIsType = pushTypeContext(0);
+  // istanbul ignore else: this condition is already checked at all call sites
+  if (match(tt.lessThan) || match(tt.typeParameterStart)) {
+    next();
+  } else {
+    unexpected();
+  }
+
+  do {
+    flowParseTypeParameter();
+    if (!match(tt.greaterThan)) {
+      expect(tt.comma);
+    }
+  } while (!match(tt.greaterThan) && !state.error);
+  expect(tt.greaterThan);
+  popTypeContext(oldIsType);
+}
+
+function flowParseTypeParameterInstantiation() {
+  const oldIsType = pushTypeContext(0);
+  expect(tt.lessThan);
+  while (!match(tt.greaterThan) && !state.error) {
+    flowParseType();
+    if (!match(tt.greaterThan)) {
+      expect(tt.comma);
+    }
+  }
+  expect(tt.greaterThan);
+  popTypeContext(oldIsType);
+}
+
+function flowParseInterfaceType() {
+  expectContextual(ContextualKeyword._interface);
+  if (eat(tt._extends)) {
+    do {
+      flowParseInterfaceExtends();
+    } while (eat(tt.comma));
+  }
+  flowParseObjectType(false, false, false);
+}
+
+function flowParseObjectPropertyKey() {
+  if (match(tt.num) || match(tt.string)) {
+    parseExprAtom();
+  } else {
+    parseIdentifier();
+  }
+}
+
+function flowParseObjectTypeIndexer() {
+  // Note: bracketL has already been consumed
+  if (lookaheadType() === tt.colon) {
+    flowParseObjectPropertyKey();
+    flowParseTypeInitialiser();
+  } else {
+    flowParseType();
+  }
+  expect(tt.bracketR);
+  flowParseTypeInitialiser();
+}
+
+function flowParseObjectTypeInternalSlot() {
+  // Note: both bracketL have already been consumed
+  flowParseObjectPropertyKey();
+  expect(tt.bracketR);
+  expect(tt.bracketR);
+  if (match(tt.lessThan) || match(tt.parenL)) {
+    flowParseObjectTypeMethodish();
+  } else {
+    eat(tt.question);
+    flowParseTypeInitialiser();
+  }
+}
+
+function flowParseObjectTypeMethodish() {
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+  }
+
+  expect(tt.parenL);
+  while (!match(tt.parenR) && !match(tt.ellipsis) && !state.error) {
+    flowParseFunctionTypeParam();
+    if (!match(tt.parenR)) {
+      expect(tt.comma);
+    }
+  }
+
+  if (eat(tt.ellipsis)) {
+    flowParseFunctionTypeParam();
+  }
+  expect(tt.parenR);
+  flowParseTypeInitialiser();
+}
+
+function flowParseObjectTypeCallProperty() {
+  flowParseObjectTypeMethodish();
+}
+
+function flowParseObjectType(allowStatic, allowExact, allowProto) {
+  let endDelim;
+  if (allowExact && match(tt.braceBarL)) {
+    expect(tt.braceBarL);
+    endDelim = tt.braceBarR;
+  } else {
+    expect(tt.braceL);
+    endDelim = tt.braceR;
+  }
+
+  while (!match(endDelim) && !state.error) {
+    if (allowProto && isContextual(ContextualKeyword._proto)) {
+      const lookahead = lookaheadType();
+      if (lookahead !== tt.colon && lookahead !== tt.question) {
+        next();
+        allowStatic = false;
+      }
+    }
+    if (allowStatic && isContextual(ContextualKeyword._static)) {
+      const lookahead = lookaheadType();
+      if (lookahead !== tt.colon && lookahead !== tt.question) {
+        next();
+      }
+    }
+
+    flowParseVariance();
+
+    if (eat(tt.bracketL)) {
+      if (eat(tt.bracketL)) {
+        flowParseObjectTypeInternalSlot();
+      } else {
+        flowParseObjectTypeIndexer();
+      }
+    } else if (match(tt.parenL) || match(tt.lessThan)) {
+      flowParseObjectTypeCallProperty();
+    } else {
+      if (isContextual(ContextualKeyword._get) || isContextual(ContextualKeyword._set)) {
+        const lookahead = lookaheadType();
+        if (lookahead === tt.name || lookahead === tt.string || lookahead === tt.num) {
+          next();
+        }
+      }
+
+      flowParseObjectTypeProperty();
+    }
+
+    flowObjectTypeSemicolon();
+  }
+
+  expect(endDelim);
+}
+
+function flowParseObjectTypeProperty() {
+  if (match(tt.ellipsis)) {
+    expect(tt.ellipsis);
+    if (!eat(tt.comma)) {
+      eat(tt.semi);
+    }
+    // Explicit inexact object syntax.
+    if (match(tt.braceR)) {
+      return;
+    }
+    flowParseType();
+  } else {
+    flowParseObjectPropertyKey();
+    if (match(tt.lessThan) || match(tt.parenL)) {
+      // This is a method property
+      flowParseObjectTypeMethodish();
+    } else {
+      eat(tt.question);
+      flowParseTypeInitialiser();
+    }
+  }
+}
+
+function flowObjectTypeSemicolon() {
+  if (!eat(tt.semi) && !eat(tt.comma) && !match(tt.braceR) && !match(tt.braceBarR)) {
+    unexpected();
+  }
+}
+
+function flowParseQualifiedTypeIdentifier(initialIdAlreadyParsed) {
+  if (!initialIdAlreadyParsed) {
+    parseIdentifier();
+  }
+  while (eat(tt.dot)) {
+    parseIdentifier();
+  }
+}
+
+function flowParseGenericType() {
+  flowParseQualifiedTypeIdentifier(true);
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterInstantiation();
+  }
+}
+
+function flowParseTypeofType() {
+  expect(tt._typeof);
+  flowParsePrimaryType();
+}
+
+function flowParseTupleType() {
+  expect(tt.bracketL);
+  // We allow trailing commas
+  while (state.pos < input.length && !match(tt.bracketR)) {
+    flowParseType();
+    if (match(tt.bracketR)) {
+      break;
+    }
+    expect(tt.comma);
+  }
+  expect(tt.bracketR);
+}
+
+function flowParseFunctionTypeParam() {
+  const lookahead = lookaheadType();
+  if (lookahead === tt.colon || lookahead === tt.question) {
+    parseIdentifier();
+    eat(tt.question);
+    flowParseTypeInitialiser();
+  } else {
+    flowParseType();
+  }
+}
+
+function flowParseFunctionTypeParams() {
+  while (!match(tt.parenR) && !match(tt.ellipsis) && !state.error) {
+    flowParseFunctionTypeParam();
+    if (!match(tt.parenR)) {
+      expect(tt.comma);
+    }
+  }
+  if (eat(tt.ellipsis)) {
+    flowParseFunctionTypeParam();
+  }
+}
+
+// The parsing of types roughly parallels the parsing of expressions, and
+// primary types are kind of like primary expressions...they're the
+// primitives with which other types are constructed.
+function flowParsePrimaryType() {
+  let isGroupedType = false;
+  const oldNoAnonFunctionType = state.noAnonFunctionType;
+
+  switch (state.type) {
+    case tt.name: {
+      if (isContextual(ContextualKeyword._interface)) {
+        flowParseInterfaceType();
+        return;
+      }
+      parseIdentifier();
+      flowParseGenericType();
+      return;
+    }
+
+    case tt.braceL:
+      flowParseObjectType(false, false, false);
+      return;
+
+    case tt.braceBarL:
+      flowParseObjectType(false, true, false);
+      return;
+
+    case tt.bracketL:
+      flowParseTupleType();
+      return;
+
+    case tt.lessThan:
+      flowParseTypeParameterDeclaration();
+      expect(tt.parenL);
+      flowParseFunctionTypeParams();
+      expect(tt.parenR);
+      expect(tt.arrow);
+      flowParseType();
+      return;
+
+    case tt.parenL:
+      next();
+
+      // Check to see if this is actually a grouped type
+      if (!match(tt.parenR) && !match(tt.ellipsis)) {
+        if (match(tt.name)) {
+          const token = lookaheadType();
+          isGroupedType = token !== tt.question && token !== tt.colon;
+        } else {
+          isGroupedType = true;
+        }
+      }
+
+      if (isGroupedType) {
+        state.noAnonFunctionType = false;
+        flowParseType();
+        state.noAnonFunctionType = oldNoAnonFunctionType;
+
+        // A `,` or a `) =>` means this is an anonymous function type
+        if (
+          state.noAnonFunctionType ||
+          !(match(tt.comma) || (match(tt.parenR) && lookaheadType() === tt.arrow))
+        ) {
+          expect(tt.parenR);
+          return;
+        } else {
+          // Eat a comma if there is one
+          eat(tt.comma);
+        }
+      }
+
+      flowParseFunctionTypeParams();
+
+      expect(tt.parenR);
+      expect(tt.arrow);
+      flowParseType();
+      return;
+
+    case tt.minus:
+      next();
+      parseLiteral();
+      return;
+
+    case tt.string:
+    case tt.num:
+    case tt._true:
+    case tt._false:
+    case tt._null:
+    case tt._this:
+    case tt._void:
+    case tt.star:
+      next();
+      return;
+
+    default:
+      if (state.type === tt._typeof) {
+        flowParseTypeofType();
+        return;
+      } else if (state.type & TokenType.IS_KEYWORD) {
+        next();
+        state.tokens[state.tokens.length - 1].type = tt.name;
+        return;
+      }
+  }
+
+  unexpected();
+}
+
+function flowParsePostfixType() {
+  flowParsePrimaryType();
+  while (!canInsertSemicolon() && (match(tt.bracketL) || match(tt.questionDot))) {
+    eat(tt.questionDot);
+    expect(tt.bracketL);
+    if (eat(tt.bracketR)) {
+      // Array type
+    } else {
+      // Indexed access type
+      flowParseType();
+      expect(tt.bracketR);
+    }
+  }
+}
+
+function flowParsePrefixType() {
+  if (eat(tt.question)) {
+    flowParsePrefixType();
+  } else {
+    flowParsePostfixType();
+  }
+}
+
+function flowParseAnonFunctionWithoutParens() {
+  flowParsePrefixType();
+  if (!state.noAnonFunctionType && eat(tt.arrow)) {
+    flowParseType();
+  }
+}
+
+function flowParseIntersectionType() {
+  eat(tt.bitwiseAND);
+  flowParseAnonFunctionWithoutParens();
+  while (eat(tt.bitwiseAND)) {
+    flowParseAnonFunctionWithoutParens();
+  }
+}
+
+function flowParseUnionType() {
+  eat(tt.bitwiseOR);
+  flowParseIntersectionType();
+  while (eat(tt.bitwiseOR)) {
+    flowParseIntersectionType();
+  }
+}
+
+function flowParseType() {
+  flowParseUnionType();
+}
+
+export function flowParseTypeAnnotation() {
+  flowParseTypeInitialiser();
+}
+
+function flowParseTypeAnnotatableIdentifier() {
+  parseIdentifier();
+  if (match(tt.colon)) {
+    flowParseTypeAnnotation();
+  }
+}
+
+export function flowParseVariance() {
+  if (match(tt.plus) || match(tt.minus)) {
+    next();
+    state.tokens[state.tokens.length - 1].isType = true;
+  }
+}
+
+// ==================================
+// Overrides
+// ==================================
+
+export function flowParseFunctionBodyAndFinish(funcContextId) {
+  // For arrow functions, `parseArrow` handles the return type itself.
+  if (match(tt.colon)) {
+    flowParseTypeAndPredicateInitialiser();
+  }
+
+  parseFunctionBody(false, funcContextId);
+}
+
+export function flowParseSubscript(
+  startTokenIndex,
+  noCalls,
+  stopState,
+) {
+  if (match(tt.questionDot) && lookaheadType() === tt.lessThan) {
+    if (noCalls) {
+      stopState.stop = true;
+      return;
+    }
+    next();
+    flowParseTypeParameterInstantiation();
+    expect(tt.parenL);
+    parseCallExpressionArguments();
+    return;
+  } else if (!noCalls && match(tt.lessThan)) {
+    const snapshot = state.snapshot();
+    flowParseTypeParameterInstantiation();
+    expect(tt.parenL);
+    parseCallExpressionArguments();
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+    } else {
+      return;
+    }
+  }
+  baseParseSubscript(startTokenIndex, noCalls, stopState);
+}
+
+export function flowStartParseNewArguments() {
+  if (match(tt.lessThan)) {
+    const snapshot = state.snapshot();
+    flowParseTypeParameterInstantiation();
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+    }
+  }
+}
+
+// interfaces
+export function flowTryParseStatement() {
+  if (match(tt.name) && state.contextualKeyword === ContextualKeyword._interface) {
+    const oldIsType = pushTypeContext(0);
+    next();
+    flowParseInterface();
+    popTypeContext(oldIsType);
+    return true;
+  } else if (isContextual(ContextualKeyword._enum)) {
+    flowParseEnumDeclaration();
+    return true;
+  }
+  return false;
+}
+
+export function flowTryParseExportDefaultExpression() {
+  if (isContextual(ContextualKeyword._enum)) {
+    flowParseEnumDeclaration();
+    return true;
+  }
+  return false;
+}
+
+// declares, interfaces and type aliases
+export function flowParseIdentifierStatement(contextualKeyword) {
+  if (contextualKeyword === ContextualKeyword._declare) {
+    if (
+      match(tt._class) ||
+      match(tt.name) ||
+      match(tt._function) ||
+      match(tt._var) ||
+      match(tt._export)
+    ) {
+      const oldIsType = pushTypeContext(1);
+      flowParseDeclare();
+      popTypeContext(oldIsType);
+    }
+  } else if (match(tt.name)) {
+    if (contextualKeyword === ContextualKeyword._interface) {
+      const oldIsType = pushTypeContext(1);
+      flowParseInterface();
+      popTypeContext(oldIsType);
+    } else if (contextualKeyword === ContextualKeyword._type) {
+      const oldIsType = pushTypeContext(1);
+      flowParseTypeAlias();
+      popTypeContext(oldIsType);
+    } else if (contextualKeyword === ContextualKeyword._opaque) {
+      const oldIsType = pushTypeContext(1);
+      flowParseOpaqueType(false);
+      popTypeContext(oldIsType);
+    }
+  }
+  semicolon();
+}
+
+// export type
+export function flowShouldParseExportDeclaration() {
+  return (
+    isContextual(ContextualKeyword._type) ||
+    isContextual(ContextualKeyword._interface) ||
+    isContextual(ContextualKeyword._opaque) ||
+    isContextual(ContextualKeyword._enum)
+  );
+}
+
+export function flowShouldDisallowExportDefaultSpecifier() {
+  return (
+    match(tt.name) &&
+    (state.contextualKeyword === ContextualKeyword._type ||
+      state.contextualKeyword === ContextualKeyword._interface ||
+      state.contextualKeyword === ContextualKeyword._opaque ||
+      state.contextualKeyword === ContextualKeyword._enum)
+  );
+}
+
+export function flowParseExportDeclaration() {
+  if (isContextual(ContextualKeyword._type)) {
+    const oldIsType = pushTypeContext(1);
+    next();
+
+    if (match(tt.braceL)) {
+      // export type { foo, bar };
+      parseExportSpecifiers();
+      parseExportFrom();
+    } else {
+      // export type Foo = Bar;
+      flowParseTypeAlias();
+    }
+    popTypeContext(oldIsType);
+  } else if (isContextual(ContextualKeyword._opaque)) {
+    const oldIsType = pushTypeContext(1);
+    next();
+    // export opaque type Foo = Bar;
+    flowParseOpaqueType(false);
+    popTypeContext(oldIsType);
+  } else if (isContextual(ContextualKeyword._interface)) {
+    const oldIsType = pushTypeContext(1);
+    next();
+    flowParseInterface();
+    popTypeContext(oldIsType);
+  } else {
+    parseStatement(true);
+  }
+}
+
+export function flowShouldParseExportStar() {
+  return match(tt.star) || (isContextual(ContextualKeyword._type) && lookaheadType() === tt.star);
+}
+
+export function flowParseExportStar() {
+  if (eatContextual(ContextualKeyword._type)) {
+    const oldIsType = pushTypeContext(2);
+    baseParseExportStar();
+    popTypeContext(oldIsType);
+  } else {
+    baseParseExportStar();
+  }
+}
+
+// parse a the super class type parameters and implements
+export function flowAfterParseClassSuper(hasSuper) {
+  if (hasSuper && match(tt.lessThan)) {
+    flowParseTypeParameterInstantiation();
+  }
+  if (isContextual(ContextualKeyword._implements)) {
+    const oldIsType = pushTypeContext(0);
+    next();
+    state.tokens[state.tokens.length - 1].type = tt._implements;
+    do {
+      flowParseRestrictedIdentifier();
+      if (match(tt.lessThan)) {
+        flowParseTypeParameterInstantiation();
+      }
+    } while (eat(tt.comma));
+    popTypeContext(oldIsType);
+  }
+}
+
+// parse type parameters for object method shorthand
+export function flowStartParseObjPropValue() {
+  // method shorthand
+  if (match(tt.lessThan)) {
+    flowParseTypeParameterDeclaration();
+    if (!match(tt.parenL)) unexpected();
+  }
+}
+
+export function flowParseAssignableListItemTypes() {
+  const oldIsType = pushTypeContext(0);
+  eat(tt.question);
+  if (match(tt.colon)) {
+    flowParseTypeAnnotation();
+  }
+  popTypeContext(oldIsType);
+}
+
+// parse typeof and type imports
+export function flowStartParseImportSpecifiers() {
+  if (match(tt._typeof) || isContextual(ContextualKeyword._type)) {
+    const lh = lookaheadTypeAndKeyword();
+    if (isMaybeDefaultImport(lh) || lh.type === tt.braceL || lh.type === tt.star) {
+      next();
+    }
+  }
+}
+
+// parse import-type/typeof shorthand
+export function flowParseImportSpecifier() {
+  const isTypeKeyword =
+    state.contextualKeyword === ContextualKeyword._type || state.type === tt._typeof;
+  if (isTypeKeyword) {
+    next();
+  } else {
+    parseIdentifier();
+  }
+
+  if (isContextual(ContextualKeyword._as) && !isLookaheadContextual(ContextualKeyword._as)) {
+    parseIdentifier();
+    if (isTypeKeyword && !match(tt.name) && !(state.type & TokenType.IS_KEYWORD)) {
+      // `import {type as ,` or `import {type as }`
+    } else {
+      // `import {type as foo`
+      parseIdentifier();
+    }
+  } else {
+    if (isTypeKeyword && (match(tt.name) || !!(state.type & TokenType.IS_KEYWORD))) {
+      // `import {type foo`
+      parseIdentifier();
+    }
+    if (eatContextual(ContextualKeyword._as)) {
+      parseIdentifier();
+    }
+  }
+}
+
+// parse function type parameters - function foo<T>() {}
+export function flowStartParseFunctionParams() {
+  // Originally this checked if the method is a getter/setter, but if it was, we'd crash soon
+  // anyway, so don't try to propagate that information.
+  if (match(tt.lessThan)) {
+    const oldIsType = pushTypeContext(0);
+    flowParseTypeParameterDeclaration();
+    popTypeContext(oldIsType);
+  }
+}
+
+// parse flow type annotations on variable declarator heads - let foo: string = bar
+export function flowAfterParseVarHead() {
+  if (match(tt.colon)) {
+    flowParseTypeAnnotation();
+  }
+}
+
+// parse the return type of an async arrow function - let foo = (async (): number => {});
+export function flowStartParseAsyncArrowFromCallExpression() {
+  if (match(tt.colon)) {
+    const oldNoAnonFunctionType = state.noAnonFunctionType;
+    state.noAnonFunctionType = true;
+    flowParseTypeAnnotation();
+    state.noAnonFunctionType = oldNoAnonFunctionType;
+  }
+}
+
+// We need to support type parameter declarations for arrow functions. This
+// is tricky. There are three situations we need to handle
+//
+// 1. This is either JSX or an arrow function. We'll try JSX first. If that
+//    fails, we'll try an arrow function. If that fails, we'll throw the JSX
+//    error.
+// 2. This is an arrow function. We'll parse the type parameter declaration,
+//    parse the rest, make sure the rest is an arrow function, and go from
+//    there
+// 3. This is neither. Just call the super method
+export function flowParseMaybeAssign(noIn, isWithinParens) {
+  if (match(tt.lessThan)) {
+    const snapshot = state.snapshot();
+    let wasArrow = baseParseMaybeAssign(noIn, isWithinParens);
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+      state.type = tt.typeParameterStart;
+    } else {
+      return wasArrow;
+    }
+
+    const oldIsType = pushTypeContext(0);
+    flowParseTypeParameterDeclaration();
+    popTypeContext(oldIsType);
+    wasArrow = baseParseMaybeAssign(noIn, isWithinParens);
+    if (wasArrow) {
+      return true;
+    }
+    unexpected();
+  }
+
+  return baseParseMaybeAssign(noIn, isWithinParens);
+}
+
+// handle return types for arrow functions
+export function flowParseArrow() {
+  if (match(tt.colon)) {
+    const oldIsType = pushTypeContext(0);
+    const snapshot = state.snapshot();
+
+    const oldNoAnonFunctionType = state.noAnonFunctionType;
+    state.noAnonFunctionType = true;
+    flowParseTypeAndPredicateInitialiser();
+    state.noAnonFunctionType = oldNoAnonFunctionType;
+
+    if (canInsertSemicolon()) unexpected();
+    if (!match(tt.arrow)) unexpected();
+
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+    }
+    popTypeContext(oldIsType);
+  }
+  return eat(tt.arrow);
+}
+
+export function flowParseSubscripts(startTokenIndex, noCalls = false) {
+  if (
+    state.tokens[state.tokens.length - 1].contextualKeyword === ContextualKeyword._async &&
+    match(tt.lessThan)
+  ) {
+    const snapshot = state.snapshot();
+    const wasArrow = parseAsyncArrowWithTypeParameters();
+    if (wasArrow && !state.error) {
+      return;
+    }
+    state.restoreFromSnapshot(snapshot);
+  }
+
+  baseParseSubscripts(startTokenIndex, noCalls);
+}
+
+// Returns true if there was an arrow function here.
+function parseAsyncArrowWithTypeParameters() {
+  state.scopeDepth++;
+  const startTokenIndex = state.tokens.length;
+  parseFunctionParams();
+  if (!parseArrow()) {
+    return false;
+  }
+  parseArrowExpression(startTokenIndex);
+  return true;
+}
+
+function flowParseEnumDeclaration() {
+  expectContextual(ContextualKeyword._enum);
+  state.tokens[state.tokens.length - 1].type = tt._enum;
+  parseIdentifier();
+  flowParseEnumBody();
+}
+
+function flowParseEnumBody() {
+  if (eatContextual(ContextualKeyword._of)) {
+    next();
+  }
+  expect(tt.braceL);
+  flowParseEnumMembers();
+  expect(tt.braceR);
+}
+
+function flowParseEnumMembers() {
+  while (!match(tt.braceR) && !state.error) {
+    if (eat(tt.ellipsis)) {
+      break;
+    }
+    flowParseEnumMember();
+    if (!match(tt.braceR)) {
+      expect(tt.comma);
+    }
+  }
+}
+
+function flowParseEnumMember() {
+  parseIdentifier();
+  if (eat(tt.eq)) {
+    // Flow enum values are always just one token (a string, number, or boolean literal).
+    next();
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/plugins/jsx/index.js b/node_modules/sucrase/dist/esm/parser/plugins/jsx/index.js
new file mode 100644
index 0000000..83f3983
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/plugins/jsx/index.js
@@ -0,0 +1,367 @@
+import {
+  eat,
+  finishToken,
+  getTokenFromCode,
+  IdentifierRole,
+  JSXRole,
+  match,
+  next,
+  skipSpace,
+  Token,
+} from "../../tokenizer/index";
+import {TokenType as tt} from "../../tokenizer/types";
+import {input, isTypeScriptEnabled, state} from "../../traverser/base";
+import {parseExpression, parseMaybeAssign} from "../../traverser/expression";
+import {expect, unexpected} from "../../traverser/util";
+import {charCodes} from "../../util/charcodes";
+import {IS_IDENTIFIER_CHAR, IS_IDENTIFIER_START} from "../../util/identifier";
+import {tsTryParseJSXTypeArgument} from "../typescript";
+
+/**
+ * Read token with JSX contents.
+ *
+ * In addition to detecting jsxTagStart and also regular tokens that might be
+ * part of an expression, this code detects the start and end of text ranges
+ * within JSX children. In order to properly count the number of children, we
+ * distinguish jsxText from jsxEmptyText, which is a text range that simplifies
+ * to the empty string after JSX whitespace trimming.
+ *
+ * It turns out that a JSX text range will simplify to the empty string if and
+ * only if both of these conditions hold:
+ * - The range consists entirely of whitespace characters (only counting space,
+ *   tab, \r, and \n).
+ * - The range has at least one newline.
+ * This can be proven by analyzing any implementation of whitespace trimming,
+ * e.g. formatJSXTextLiteral in Sucrase or cleanJSXElementLiteralChild in Babel.
+ */
+function jsxReadToken() {
+  let sawNewline = false;
+  let sawNonWhitespace = false;
+  while (true) {
+    if (state.pos >= input.length) {
+      unexpected("Unterminated JSX contents");
+      return;
+    }
+
+    const ch = input.charCodeAt(state.pos);
+    if (ch === charCodes.lessThan || ch === charCodes.leftCurlyBrace) {
+      if (state.pos === state.start) {
+        if (ch === charCodes.lessThan) {
+          state.pos++;
+          finishToken(tt.jsxTagStart);
+          return;
+        }
+        getTokenFromCode(ch);
+        return;
+      }
+      if (sawNewline && !sawNonWhitespace) {
+        finishToken(tt.jsxEmptyText);
+      } else {
+        finishToken(tt.jsxText);
+      }
+      return;
+    }
+
+    // This is part of JSX text.
+    if (ch === charCodes.lineFeed) {
+      sawNewline = true;
+    } else if (ch !== charCodes.space && ch !== charCodes.carriageReturn && ch !== charCodes.tab) {
+      sawNonWhitespace = true;
+    }
+    state.pos++;
+  }
+}
+
+function jsxReadString(quote) {
+  state.pos++;
+  for (;;) {
+    if (state.pos >= input.length) {
+      unexpected("Unterminated string constant");
+      return;
+    }
+
+    const ch = input.charCodeAt(state.pos);
+    if (ch === quote) {
+      state.pos++;
+      break;
+    }
+    state.pos++;
+  }
+  finishToken(tt.string);
+}
+
+// Read a JSX identifier (valid tag or attribute name).
+//
+// Optimized version since JSX identifiers can't contain
+// escape characters and so can be read as single slice.
+// Also assumes that first character was already checked
+// by isIdentifierStart in readToken.
+
+function jsxReadWord() {
+  let ch;
+  do {
+    if (state.pos > input.length) {
+      unexpected("Unexpectedly reached the end of input.");
+      return;
+    }
+    ch = input.charCodeAt(++state.pos);
+  } while (IS_IDENTIFIER_CHAR[ch] || ch === charCodes.dash);
+  finishToken(tt.jsxName);
+}
+
+// Parse next token as JSX identifier
+function jsxParseIdentifier() {
+  nextJSXTagToken();
+}
+
+// Parse namespaced identifier.
+function jsxParseNamespacedName(identifierRole) {
+  jsxParseIdentifier();
+  if (!eat(tt.colon)) {
+    // Plain identifier, so this is an access.
+    state.tokens[state.tokens.length - 1].identifierRole = identifierRole;
+    return;
+  }
+  // Process the second half of the namespaced name.
+  jsxParseIdentifier();
+}
+
+// Parses element name in any form - namespaced, member
+// or single identifier.
+function jsxParseElementName() {
+  const firstTokenIndex = state.tokens.length;
+  jsxParseNamespacedName(IdentifierRole.Access);
+  let hadDot = false;
+  while (match(tt.dot)) {
+    hadDot = true;
+    nextJSXTagToken();
+    jsxParseIdentifier();
+  }
+  // For tags like <div> with a lowercase letter and no dots, the name is
+  // actually *not* an identifier access, since it's referring to a built-in
+  // tag name. Remove the identifier role in this case so that it's not
+  // accidentally transformed by the imports transform when preserving JSX.
+  if (!hadDot) {
+    const firstToken = state.tokens[firstTokenIndex];
+    const firstChar = input.charCodeAt(firstToken.start);
+    if (firstChar >= charCodes.lowercaseA && firstChar <= charCodes.lowercaseZ) {
+      firstToken.identifierRole = null;
+    }
+  }
+}
+
+// Parses any type of JSX attribute value.
+function jsxParseAttributeValue() {
+  switch (state.type) {
+    case tt.braceL:
+      next();
+      parseExpression();
+      nextJSXTagToken();
+      return;
+
+    case tt.jsxTagStart:
+      jsxParseElement();
+      nextJSXTagToken();
+      return;
+
+    case tt.string:
+      nextJSXTagToken();
+      return;
+
+    default:
+      unexpected("JSX value should be either an expression or a quoted JSX text");
+  }
+}
+
+// Parse JSX spread child, after already processing the {
+// Does not parse the closing }
+function jsxParseSpreadChild() {
+  expect(tt.ellipsis);
+  parseExpression();
+}
+
+// Parses JSX opening tag starting after "<".
+// Returns true if the tag was self-closing.
+// Does not parse the last token.
+function jsxParseOpeningElement(initialTokenIndex) {
+  if (match(tt.jsxTagEnd)) {
+    // This is an open-fragment.
+    return false;
+  }
+  jsxParseElementName();
+  if (isTypeScriptEnabled) {
+    tsTryParseJSXTypeArgument();
+  }
+  let hasSeenPropSpread = false;
+  while (!match(tt.slash) && !match(tt.jsxTagEnd) && !state.error) {
+    if (eat(tt.braceL)) {
+      hasSeenPropSpread = true;
+      expect(tt.ellipsis);
+      parseMaybeAssign();
+      // }
+      nextJSXTagToken();
+      continue;
+    }
+    if (
+      hasSeenPropSpread &&
+      state.end - state.start === 3 &&
+      input.charCodeAt(state.start) === charCodes.lowercaseK &&
+      input.charCodeAt(state.start + 1) === charCodes.lowercaseE &&
+      input.charCodeAt(state.start + 2) === charCodes.lowercaseY
+    ) {
+      state.tokens[initialTokenIndex].jsxRole = JSXRole.KeyAfterPropSpread;
+    }
+    jsxParseNamespacedName(IdentifierRole.ObjectKey);
+    if (match(tt.eq)) {
+      nextJSXTagToken();
+      jsxParseAttributeValue();
+    }
+  }
+  const isSelfClosing = match(tt.slash);
+  if (isSelfClosing) {
+    // /
+    nextJSXTagToken();
+  }
+  return isSelfClosing;
+}
+
+// Parses JSX closing tag starting after "</".
+// Does not parse the last token.
+function jsxParseClosingElement() {
+  if (match(tt.jsxTagEnd)) {
+    // Fragment syntax, so we immediately have a tag end.
+    return;
+  }
+  jsxParseElementName();
+}
+
+// Parses entire JSX element, including its opening tag
+// (starting after "<"), attributes, contents and closing tag.
+// Does not parse the last token.
+function jsxParseElementAt() {
+  const initialTokenIndex = state.tokens.length - 1;
+  state.tokens[initialTokenIndex].jsxRole = JSXRole.NoChildren;
+  let numExplicitChildren = 0;
+  const isSelfClosing = jsxParseOpeningElement(initialTokenIndex);
+  if (!isSelfClosing) {
+    nextJSXExprToken();
+    while (true) {
+      switch (state.type) {
+        case tt.jsxTagStart:
+          nextJSXTagToken();
+          if (match(tt.slash)) {
+            nextJSXTagToken();
+            jsxParseClosingElement();
+            // Key after prop spread takes precedence over number of children,
+            // since it means we switch to createElement, which doesn't care
+            // about number of children.
+            if (state.tokens[initialTokenIndex].jsxRole !== JSXRole.KeyAfterPropSpread) {
+              if (numExplicitChildren === 1) {
+                state.tokens[initialTokenIndex].jsxRole = JSXRole.OneChild;
+              } else if (numExplicitChildren > 1) {
+                state.tokens[initialTokenIndex].jsxRole = JSXRole.StaticChildren;
+              }
+            }
+            return;
+          }
+          numExplicitChildren++;
+          jsxParseElementAt();
+          nextJSXExprToken();
+          break;
+
+        case tt.jsxText:
+          numExplicitChildren++;
+          nextJSXExprToken();
+          break;
+
+        case tt.jsxEmptyText:
+          nextJSXExprToken();
+          break;
+
+        case tt.braceL:
+          next();
+          if (match(tt.ellipsis)) {
+            jsxParseSpreadChild();
+            nextJSXExprToken();
+            // Spread children are a mechanism to explicitly mark children as
+            // static, so count it as 2 children to satisfy the "more than one
+            // child" condition.
+            numExplicitChildren += 2;
+          } else {
+            // If we see {}, this is an empty pseudo-expression that doesn't
+            // count as a child.
+            if (!match(tt.braceR)) {
+              numExplicitChildren++;
+              parseExpression();
+            }
+            nextJSXExprToken();
+          }
+
+          break;
+
+        // istanbul ignore next - should never happen
+        default:
+          unexpected();
+          return;
+      }
+    }
+  }
+}
+
+// Parses entire JSX element from current position.
+// Does not parse the last token.
+export function jsxParseElement() {
+  nextJSXTagToken();
+  jsxParseElementAt();
+}
+
+// ==================================
+// Overrides
+// ==================================
+
+export function nextJSXTagToken() {
+  state.tokens.push(new Token());
+  skipSpace();
+  state.start = state.pos;
+  const code = input.charCodeAt(state.pos);
+
+  if (IS_IDENTIFIER_START[code]) {
+    jsxReadWord();
+  } else if (code === charCodes.quotationMark || code === charCodes.apostrophe) {
+    jsxReadString(code);
+  } else {
+    // The following tokens are just one character each.
+    ++state.pos;
+    switch (code) {
+      case charCodes.greaterThan:
+        finishToken(tt.jsxTagEnd);
+        break;
+      case charCodes.lessThan:
+        finishToken(tt.jsxTagStart);
+        break;
+      case charCodes.slash:
+        finishToken(tt.slash);
+        break;
+      case charCodes.equalsTo:
+        finishToken(tt.eq);
+        break;
+      case charCodes.leftCurlyBrace:
+        finishToken(tt.braceL);
+        break;
+      case charCodes.dot:
+        finishToken(tt.dot);
+        break;
+      case charCodes.colon:
+        finishToken(tt.colon);
+        break;
+      default:
+        unexpected();
+    }
+  }
+}
+
+function nextJSXExprToken() {
+  state.tokens.push(new Token());
+  state.start = state.pos;
+  jsxReadToken();
+}
diff --git a/node_modules/sucrase/dist/esm/parser/plugins/jsx/xhtml.js b/node_modules/sucrase/dist/esm/parser/plugins/jsx/xhtml.js
new file mode 100644
index 0000000..c6a0741
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/plugins/jsx/xhtml.js
@@ -0,0 +1,256 @@
+// Use a Map rather than object to avoid unexpected __proto__ access.
+export default new Map([
+  ["quot", "\u0022"],
+  ["amp", "&"],
+  ["apos", "\u0027"],
+  ["lt", "<"],
+  ["gt", ">"],
+  ["nbsp", "\u00A0"],
+  ["iexcl", "\u00A1"],
+  ["cent", "\u00A2"],
+  ["pound", "\u00A3"],
+  ["curren", "\u00A4"],
+  ["yen", "\u00A5"],
+  ["brvbar", "\u00A6"],
+  ["sect", "\u00A7"],
+  ["uml", "\u00A8"],
+  ["copy", "\u00A9"],
+  ["ordf", "\u00AA"],
+  ["laquo", "\u00AB"],
+  ["not", "\u00AC"],
+  ["shy", "\u00AD"],
+  ["reg", "\u00AE"],
+  ["macr", "\u00AF"],
+  ["deg", "\u00B0"],
+  ["plusmn", "\u00B1"],
+  ["sup2", "\u00B2"],
+  ["sup3", "\u00B3"],
+  ["acute", "\u00B4"],
+  ["micro", "\u00B5"],
+  ["para", "\u00B6"],
+  ["middot", "\u00B7"],
+  ["cedil", "\u00B8"],
+  ["sup1", "\u00B9"],
+  ["ordm", "\u00BA"],
+  ["raquo", "\u00BB"],
+  ["frac14", "\u00BC"],
+  ["frac12", "\u00BD"],
+  ["frac34", "\u00BE"],
+  ["iquest", "\u00BF"],
+  ["Agrave", "\u00C0"],
+  ["Aacute", "\u00C1"],
+  ["Acirc", "\u00C2"],
+  ["Atilde", "\u00C3"],
+  ["Auml", "\u00C4"],
+  ["Aring", "\u00C5"],
+  ["AElig", "\u00C6"],
+  ["Ccedil", "\u00C7"],
+  ["Egrave", "\u00C8"],
+  ["Eacute", "\u00C9"],
+  ["Ecirc", "\u00CA"],
+  ["Euml", "\u00CB"],
+  ["Igrave", "\u00CC"],
+  ["Iacute", "\u00CD"],
+  ["Icirc", "\u00CE"],
+  ["Iuml", "\u00CF"],
+  ["ETH", "\u00D0"],
+  ["Ntilde", "\u00D1"],
+  ["Ograve", "\u00D2"],
+  ["Oacute", "\u00D3"],
+  ["Ocirc", "\u00D4"],
+  ["Otilde", "\u00D5"],
+  ["Ouml", "\u00D6"],
+  ["times", "\u00D7"],
+  ["Oslash", "\u00D8"],
+  ["Ugrave", "\u00D9"],
+  ["Uacute", "\u00DA"],
+  ["Ucirc", "\u00DB"],
+  ["Uuml", "\u00DC"],
+  ["Yacute", "\u00DD"],
+  ["THORN", "\u00DE"],
+  ["szlig", "\u00DF"],
+  ["agrave", "\u00E0"],
+  ["aacute", "\u00E1"],
+  ["acirc", "\u00E2"],
+  ["atilde", "\u00E3"],
+  ["auml", "\u00E4"],
+  ["aring", "\u00E5"],
+  ["aelig", "\u00E6"],
+  ["ccedil", "\u00E7"],
+  ["egrave", "\u00E8"],
+  ["eacute", "\u00E9"],
+  ["ecirc", "\u00EA"],
+  ["euml", "\u00EB"],
+  ["igrave", "\u00EC"],
+  ["iacute", "\u00ED"],
+  ["icirc", "\u00EE"],
+  ["iuml", "\u00EF"],
+  ["eth", "\u00F0"],
+  ["ntilde", "\u00F1"],
+  ["ograve", "\u00F2"],
+  ["oacute", "\u00F3"],
+  ["ocirc", "\u00F4"],
+  ["otilde", "\u00F5"],
+  ["ouml", "\u00F6"],
+  ["divide", "\u00F7"],
+  ["oslash", "\u00F8"],
+  ["ugrave", "\u00F9"],
+  ["uacute", "\u00FA"],
+  ["ucirc", "\u00FB"],
+  ["uuml", "\u00FC"],
+  ["yacute", "\u00FD"],
+  ["thorn", "\u00FE"],
+  ["yuml", "\u00FF"],
+  ["OElig", "\u0152"],
+  ["oelig", "\u0153"],
+  ["Scaron", "\u0160"],
+  ["scaron", "\u0161"],
+  ["Yuml", "\u0178"],
+  ["fnof", "\u0192"],
+  ["circ", "\u02C6"],
+  ["tilde", "\u02DC"],
+  ["Alpha", "\u0391"],
+  ["Beta", "\u0392"],
+  ["Gamma", "\u0393"],
+  ["Delta", "\u0394"],
+  ["Epsilon", "\u0395"],
+  ["Zeta", "\u0396"],
+  ["Eta", "\u0397"],
+  ["Theta", "\u0398"],
+  ["Iota", "\u0399"],
+  ["Kappa", "\u039A"],
+  ["Lambda", "\u039B"],
+  ["Mu", "\u039C"],
+  ["Nu", "\u039D"],
+  ["Xi", "\u039E"],
+  ["Omicron", "\u039F"],
+  ["Pi", "\u03A0"],
+  ["Rho", "\u03A1"],
+  ["Sigma", "\u03A3"],
+  ["Tau", "\u03A4"],
+  ["Upsilon", "\u03A5"],
+  ["Phi", "\u03A6"],
+  ["Chi", "\u03A7"],
+  ["Psi", "\u03A8"],
+  ["Omega", "\u03A9"],
+  ["alpha", "\u03B1"],
+  ["beta", "\u03B2"],
+  ["gamma", "\u03B3"],
+  ["delta", "\u03B4"],
+  ["epsilon", "\u03B5"],
+  ["zeta", "\u03B6"],
+  ["eta", "\u03B7"],
+  ["theta", "\u03B8"],
+  ["iota", "\u03B9"],
+  ["kappa", "\u03BA"],
+  ["lambda", "\u03BB"],
+  ["mu", "\u03BC"],
+  ["nu", "\u03BD"],
+  ["xi", "\u03BE"],
+  ["omicron", "\u03BF"],
+  ["pi", "\u03C0"],
+  ["rho", "\u03C1"],
+  ["sigmaf", "\u03C2"],
+  ["sigma", "\u03C3"],
+  ["tau", "\u03C4"],
+  ["upsilon", "\u03C5"],
+  ["phi", "\u03C6"],
+  ["chi", "\u03C7"],
+  ["psi", "\u03C8"],
+  ["omega", "\u03C9"],
+  ["thetasym", "\u03D1"],
+  ["upsih", "\u03D2"],
+  ["piv", "\u03D6"],
+  ["ensp", "\u2002"],
+  ["emsp", "\u2003"],
+  ["thinsp", "\u2009"],
+  ["zwnj", "\u200C"],
+  ["zwj", "\u200D"],
+  ["lrm", "\u200E"],
+  ["rlm", "\u200F"],
+  ["ndash", "\u2013"],
+  ["mdash", "\u2014"],
+  ["lsquo", "\u2018"],
+  ["rsquo", "\u2019"],
+  ["sbquo", "\u201A"],
+  ["ldquo", "\u201C"],
+  ["rdquo", "\u201D"],
+  ["bdquo", "\u201E"],
+  ["dagger", "\u2020"],
+  ["Dagger", "\u2021"],
+  ["bull", "\u2022"],
+  ["hellip", "\u2026"],
+  ["permil", "\u2030"],
+  ["prime", "\u2032"],
+  ["Prime", "\u2033"],
+  ["lsaquo", "\u2039"],
+  ["rsaquo", "\u203A"],
+  ["oline", "\u203E"],
+  ["frasl", "\u2044"],
+  ["euro", "\u20AC"],
+  ["image", "\u2111"],
+  ["weierp", "\u2118"],
+  ["real", "\u211C"],
+  ["trade", "\u2122"],
+  ["alefsym", "\u2135"],
+  ["larr", "\u2190"],
+  ["uarr", "\u2191"],
+  ["rarr", "\u2192"],
+  ["darr", "\u2193"],
+  ["harr", "\u2194"],
+  ["crarr", "\u21B5"],
+  ["lArr", "\u21D0"],
+  ["uArr", "\u21D1"],
+  ["rArr", "\u21D2"],
+  ["dArr", "\u21D3"],
+  ["hArr", "\u21D4"],
+  ["forall", "\u2200"],
+  ["part", "\u2202"],
+  ["exist", "\u2203"],
+  ["empty", "\u2205"],
+  ["nabla", "\u2207"],
+  ["isin", "\u2208"],
+  ["notin", "\u2209"],
+  ["ni", "\u220B"],
+  ["prod", "\u220F"],
+  ["sum", "\u2211"],
+  ["minus", "\u2212"],
+  ["lowast", "\u2217"],
+  ["radic", "\u221A"],
+  ["prop", "\u221D"],
+  ["infin", "\u221E"],
+  ["ang", "\u2220"],
+  ["and", "\u2227"],
+  ["or", "\u2228"],
+  ["cap", "\u2229"],
+  ["cup", "\u222A"],
+  ["int", "\u222B"],
+  ["there4", "\u2234"],
+  ["sim", "\u223C"],
+  ["cong", "\u2245"],
+  ["asymp", "\u2248"],
+  ["ne", "\u2260"],
+  ["equiv", "\u2261"],
+  ["le", "\u2264"],
+  ["ge", "\u2265"],
+  ["sub", "\u2282"],
+  ["sup", "\u2283"],
+  ["nsub", "\u2284"],
+  ["sube", "\u2286"],
+  ["supe", "\u2287"],
+  ["oplus", "\u2295"],
+  ["otimes", "\u2297"],
+  ["perp", "\u22A5"],
+  ["sdot", "\u22C5"],
+  ["lceil", "\u2308"],
+  ["rceil", "\u2309"],
+  ["lfloor", "\u230A"],
+  ["rfloor", "\u230B"],
+  ["lang", "\u2329"],
+  ["rang", "\u232A"],
+  ["loz", "\u25CA"],
+  ["spades", "\u2660"],
+  ["clubs", "\u2663"],
+  ["hearts", "\u2665"],
+  ["diams", "\u2666"],
+]);
diff --git a/node_modules/sucrase/dist/esm/parser/plugins/types.js b/node_modules/sucrase/dist/esm/parser/plugins/types.js
new file mode 100644
index 0000000..78e4af4
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/plugins/types.js
@@ -0,0 +1,37 @@
+import {eatTypeToken, lookaheadType, match} from "../tokenizer/index";
+import {TokenType as tt} from "../tokenizer/types";
+import {isFlowEnabled, isTypeScriptEnabled} from "../traverser/base";
+import {baseParseConditional} from "../traverser/expression";
+import {flowParseTypeAnnotation} from "./flow";
+import {tsParseTypeAnnotation} from "./typescript";
+
+/**
+ * Common parser code for TypeScript and Flow.
+ */
+
+// An apparent conditional expression could actually be an optional parameter in an arrow function.
+export function typedParseConditional(noIn) {
+  // If we see ?:, this can't possibly be a valid conditional. typedParseParenItem will be called
+  // later to finish off the arrow parameter. We also need to handle bare ? tokens for optional
+  // parameters without type annotations, i.e. ?, and ?) .
+  if (match(tt.question)) {
+    const nextType = lookaheadType();
+    if (nextType === tt.colon || nextType === tt.comma || nextType === tt.parenR) {
+      return;
+    }
+  }
+  baseParseConditional(noIn);
+}
+
+// Note: These "type casts" are *not* valid TS expressions.
+// But we parse them here and change them when completing the arrow function.
+export function typedParseParenItem() {
+  eatTypeToken(tt.question);
+  if (match(tt.colon)) {
+    if (isTypeScriptEnabled) {
+      tsParseTypeAnnotation();
+    } else if (isFlowEnabled) {
+      flowParseTypeAnnotation();
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/plugins/typescript.js b/node_modules/sucrase/dist/esm/parser/plugins/typescript.js
new file mode 100644
index 0000000..f64ca67
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/plugins/typescript.js
@@ -0,0 +1,1632 @@
+import {
+  eat,
+  finishToken,
+  IdentifierRole,
+  lookaheadType,
+  lookaheadTypeAndKeyword,
+  match,
+  next,
+  nextTemplateToken,
+  popTypeContext,
+  pushTypeContext,
+  rescan_gt,
+} from "../tokenizer/index";
+import {ContextualKeyword} from "../tokenizer/keywords";
+import {TokenType, TokenType as tt} from "../tokenizer/types";
+import {isJSXEnabled, state} from "../traverser/base";
+import {
+  atPossibleAsync,
+  baseParseMaybeAssign,
+  baseParseSubscript,
+  parseCallExpressionArguments,
+  parseExprAtom,
+  parseExpression,
+  parseFunctionBody,
+  parseIdentifier,
+  parseLiteral,
+  parseMaybeAssign,
+  parseMaybeUnary,
+  parsePropertyName,
+  parseTemplate,
+
+} from "../traverser/expression";
+import {parseBindingIdentifier, parseBindingList, parseImportedIdentifier} from "../traverser/lval";
+import {
+  baseParseMaybeDecoratorArguments,
+  parseBlockBody,
+  parseClass,
+  parseFunction,
+  parseFunctionParams,
+  parseStatement,
+  parseVarStatement,
+} from "../traverser/statement";
+import {
+  canInsertSemicolon,
+  eatContextual,
+  expect,
+  expectContextual,
+  hasPrecedingLineBreak,
+  isContextual,
+  isLineTerminator,
+  isLookaheadContextual,
+  semicolon,
+  unexpected,
+} from "../traverser/util";
+import {nextJSXTagToken} from "./jsx";
+
+function tsIsIdentifier() {
+  // TODO: actually a bit more complex in TypeScript, but shouldn't matter.
+  // See https://github.com/Microsoft/TypeScript/issues/15008
+  return match(tt.name);
+}
+
+function isLiteralPropertyName() {
+  return (
+    match(tt.name) ||
+    Boolean(state.type & TokenType.IS_KEYWORD) ||
+    match(tt.string) ||
+    match(tt.num) ||
+    match(tt.bigint) ||
+    match(tt.decimal)
+  );
+}
+
+function tsNextTokenCanFollowModifier() {
+  // Note: TypeScript's implementation is much more complicated because
+  // more things are considered modifiers there.
+  // This implementation only handles modifiers not handled by babylon itself. And "static".
+  // TODO: Would be nice to avoid lookahead. Want a hasLineBreakUpNext() method...
+  const snapshot = state.snapshot();
+
+  next();
+  const canFollowModifier =
+    (match(tt.bracketL) ||
+      match(tt.braceL) ||
+      match(tt.star) ||
+      match(tt.ellipsis) ||
+      match(tt.hash) ||
+      isLiteralPropertyName()) &&
+    !hasPrecedingLineBreak();
+
+  if (canFollowModifier) {
+    return true;
+  } else {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  }
+}
+
+export function tsParseModifiers(allowedModifiers) {
+  while (true) {
+    const modifier = tsParseModifier(allowedModifiers);
+    if (modifier === null) {
+      break;
+    }
+  }
+}
+
+/** Parses a modifier matching one the given modifier names. */
+export function tsParseModifier(
+  allowedModifiers,
+) {
+  if (!match(tt.name)) {
+    return null;
+  }
+
+  const modifier = state.contextualKeyword;
+  if (allowedModifiers.indexOf(modifier) !== -1 && tsNextTokenCanFollowModifier()) {
+    switch (modifier) {
+      case ContextualKeyword._readonly:
+        state.tokens[state.tokens.length - 1].type = tt._readonly;
+        break;
+      case ContextualKeyword._abstract:
+        state.tokens[state.tokens.length - 1].type = tt._abstract;
+        break;
+      case ContextualKeyword._static:
+        state.tokens[state.tokens.length - 1].type = tt._static;
+        break;
+      case ContextualKeyword._public:
+        state.tokens[state.tokens.length - 1].type = tt._public;
+        break;
+      case ContextualKeyword._private:
+        state.tokens[state.tokens.length - 1].type = tt._private;
+        break;
+      case ContextualKeyword._protected:
+        state.tokens[state.tokens.length - 1].type = tt._protected;
+        break;
+      case ContextualKeyword._override:
+        state.tokens[state.tokens.length - 1].type = tt._override;
+        break;
+      case ContextualKeyword._declare:
+        state.tokens[state.tokens.length - 1].type = tt._declare;
+        break;
+      default:
+        break;
+    }
+    return modifier;
+  }
+  return null;
+}
+
+function tsParseEntityName() {
+  parseIdentifier();
+  while (eat(tt.dot)) {
+    parseIdentifier();
+  }
+}
+
+function tsParseTypeReference() {
+  tsParseEntityName();
+  if (!hasPrecedingLineBreak() && match(tt.lessThan)) {
+    tsParseTypeArguments();
+  }
+}
+
+function tsParseThisTypePredicate() {
+  next();
+  tsParseTypeAnnotation();
+}
+
+function tsParseThisTypeNode() {
+  next();
+}
+
+function tsParseTypeQuery() {
+  expect(tt._typeof);
+  if (match(tt._import)) {
+    tsParseImportType();
+  } else {
+    tsParseEntityName();
+  }
+  if (!hasPrecedingLineBreak() && match(tt.lessThan)) {
+    tsParseTypeArguments();
+  }
+}
+
+function tsParseImportType() {
+  expect(tt._import);
+  expect(tt.parenL);
+  expect(tt.string);
+  expect(tt.parenR);
+  if (eat(tt.dot)) {
+    tsParseEntityName();
+  }
+  if (match(tt.lessThan)) {
+    tsParseTypeArguments();
+  }
+}
+
+function tsParseTypeParameter() {
+  eat(tt._const);
+  const hadIn = eat(tt._in);
+  const hadOut = eatContextual(ContextualKeyword._out);
+  eat(tt._const);
+  if ((hadIn || hadOut) && !match(tt.name)) {
+    // The "in" or "out" keyword must have actually been the type parameter
+    // name, so set it as the name.
+    state.tokens[state.tokens.length - 1].type = tt.name;
+  } else {
+    parseIdentifier();
+  }
+
+  if (eat(tt._extends)) {
+    tsParseType();
+  }
+  if (eat(tt.eq)) {
+    tsParseType();
+  }
+}
+
+export function tsTryParseTypeParameters() {
+  if (match(tt.lessThan)) {
+    tsParseTypeParameters();
+  }
+}
+
+function tsParseTypeParameters() {
+  const oldIsType = pushTypeContext(0);
+  if (match(tt.lessThan) || match(tt.typeParameterStart)) {
+    next();
+  } else {
+    unexpected();
+  }
+
+  while (!eat(tt.greaterThan) && !state.error) {
+    tsParseTypeParameter();
+    eat(tt.comma);
+  }
+  popTypeContext(oldIsType);
+}
+
+// Note: In TypeScript implementation we must provide `yieldContext` and `awaitContext`,
+// but here it's always false, because this is only used for types.
+function tsFillSignature(returnToken) {
+  // Arrow fns *must* have return token (`=>`). Normal functions can omit it.
+  const returnTokenRequired = returnToken === tt.arrow;
+  tsTryParseTypeParameters();
+  expect(tt.parenL);
+  // Create a scope even though we're doing type parsing so we don't accidentally
+  // treat params as top-level bindings.
+  state.scopeDepth++;
+  tsParseBindingListForSignature(false /* isBlockScope */);
+  state.scopeDepth--;
+  if (returnTokenRequired) {
+    tsParseTypeOrTypePredicateAnnotation(returnToken);
+  } else if (match(returnToken)) {
+    tsParseTypeOrTypePredicateAnnotation(returnToken);
+  }
+}
+
+function tsParseBindingListForSignature(isBlockScope) {
+  parseBindingList(tt.parenR, isBlockScope);
+}
+
+function tsParseTypeMemberSemicolon() {
+  if (!eat(tt.comma)) {
+    semicolon();
+  }
+}
+
+function tsParseSignatureMember() {
+  tsFillSignature(tt.colon);
+  tsParseTypeMemberSemicolon();
+}
+
+function tsIsUnambiguouslyIndexSignature() {
+  const snapshot = state.snapshot();
+  next(); // Skip '{'
+  const isIndexSignature = eat(tt.name) && match(tt.colon);
+  state.restoreFromSnapshot(snapshot);
+  return isIndexSignature;
+}
+
+function tsTryParseIndexSignature() {
+  if (!(match(tt.bracketL) && tsIsUnambiguouslyIndexSignature())) {
+    return false;
+  }
+
+  const oldIsType = pushTypeContext(0);
+
+  expect(tt.bracketL);
+  parseIdentifier();
+  tsParseTypeAnnotation();
+  expect(tt.bracketR);
+
+  tsTryParseTypeAnnotation();
+  tsParseTypeMemberSemicolon();
+
+  popTypeContext(oldIsType);
+  return true;
+}
+
+function tsParsePropertyOrMethodSignature(isReadonly) {
+  eat(tt.question);
+
+  if (!isReadonly && (match(tt.parenL) || match(tt.lessThan))) {
+    tsFillSignature(tt.colon);
+    tsParseTypeMemberSemicolon();
+  } else {
+    tsTryParseTypeAnnotation();
+    tsParseTypeMemberSemicolon();
+  }
+}
+
+function tsParseTypeMember() {
+  if (match(tt.parenL) || match(tt.lessThan)) {
+    // call signature
+    tsParseSignatureMember();
+    return;
+  }
+  if (match(tt._new)) {
+    next();
+    if (match(tt.parenL) || match(tt.lessThan)) {
+      // constructor signature
+      tsParseSignatureMember();
+    } else {
+      tsParsePropertyOrMethodSignature(false);
+    }
+    return;
+  }
+  const readonly = !!tsParseModifier([ContextualKeyword._readonly]);
+
+  const found = tsTryParseIndexSignature();
+  if (found) {
+    return;
+  }
+  if (
+    (isContextual(ContextualKeyword._get) || isContextual(ContextualKeyword._set)) &&
+    tsNextTokenCanFollowModifier()
+  ) {
+    // This is a getter/setter on a type. The tsNextTokenCanFollowModifier
+    // function already called next() for us, so continue parsing the name.
+  }
+  parsePropertyName(-1 /* Types don't need context IDs. */);
+  tsParsePropertyOrMethodSignature(readonly);
+}
+
+function tsParseTypeLiteral() {
+  tsParseObjectTypeMembers();
+}
+
+function tsParseObjectTypeMembers() {
+  expect(tt.braceL);
+  while (!eat(tt.braceR) && !state.error) {
+    tsParseTypeMember();
+  }
+}
+
+function tsLookaheadIsStartOfMappedType() {
+  const snapshot = state.snapshot();
+  const isStartOfMappedType = tsIsStartOfMappedType();
+  state.restoreFromSnapshot(snapshot);
+  return isStartOfMappedType;
+}
+
+function tsIsStartOfMappedType() {
+  next();
+  if (eat(tt.plus) || eat(tt.minus)) {
+    return isContextual(ContextualKeyword._readonly);
+  }
+  if (isContextual(ContextualKeyword._readonly)) {
+    next();
+  }
+  if (!match(tt.bracketL)) {
+    return false;
+  }
+  next();
+  if (!tsIsIdentifier()) {
+    return false;
+  }
+  next();
+  return match(tt._in);
+}
+
+function tsParseMappedTypeParameter() {
+  parseIdentifier();
+  expect(tt._in);
+  tsParseType();
+}
+
+function tsParseMappedType() {
+  expect(tt.braceL);
+  if (match(tt.plus) || match(tt.minus)) {
+    next();
+    expectContextual(ContextualKeyword._readonly);
+  } else {
+    eatContextual(ContextualKeyword._readonly);
+  }
+  expect(tt.bracketL);
+  tsParseMappedTypeParameter();
+  if (eatContextual(ContextualKeyword._as)) {
+    tsParseType();
+  }
+  expect(tt.bracketR);
+  if (match(tt.plus) || match(tt.minus)) {
+    next();
+    expect(tt.question);
+  } else {
+    eat(tt.question);
+  }
+  tsTryParseType();
+  semicolon();
+  expect(tt.braceR);
+}
+
+function tsParseTupleType() {
+  expect(tt.bracketL);
+  while (!eat(tt.bracketR) && !state.error) {
+    // Do not validate presence of either none or only labeled elements
+    tsParseTupleElementType();
+    eat(tt.comma);
+  }
+}
+
+function tsParseTupleElementType() {
+  // parses `...TsType[]`
+  if (eat(tt.ellipsis)) {
+    tsParseType();
+  } else {
+    // parses `TsType?`
+    tsParseType();
+    eat(tt.question);
+  }
+
+  // The type we parsed above was actually a label
+  if (eat(tt.colon)) {
+    // Labeled tuple types must affix the label with `...` or `?`, so no need to handle those here
+    tsParseType();
+  }
+}
+
+function tsParseParenthesizedType() {
+  expect(tt.parenL);
+  tsParseType();
+  expect(tt.parenR);
+}
+
+function tsParseTemplateLiteralType() {
+  // Finish `, read quasi
+  nextTemplateToken();
+  // Finish quasi, read ${
+  nextTemplateToken();
+  while (!match(tt.backQuote) && !state.error) {
+    expect(tt.dollarBraceL);
+    tsParseType();
+    // Finish }, read quasi
+    nextTemplateToken();
+    // Finish quasi, read either ${ or `
+    nextTemplateToken();
+  }
+  next();
+}
+
+var FunctionType; (function (FunctionType) {
+  const TSFunctionType = 0; FunctionType[FunctionType["TSFunctionType"] = TSFunctionType] = "TSFunctionType";
+  const TSConstructorType = TSFunctionType + 1; FunctionType[FunctionType["TSConstructorType"] = TSConstructorType] = "TSConstructorType";
+  const TSAbstractConstructorType = TSConstructorType + 1; FunctionType[FunctionType["TSAbstractConstructorType"] = TSAbstractConstructorType] = "TSAbstractConstructorType";
+})(FunctionType || (FunctionType = {}));
+
+function tsParseFunctionOrConstructorType(type) {
+  if (type === FunctionType.TSAbstractConstructorType) {
+    expectContextual(ContextualKeyword._abstract);
+  }
+  if (type === FunctionType.TSConstructorType || type === FunctionType.TSAbstractConstructorType) {
+    expect(tt._new);
+  }
+  const oldInDisallowConditionalTypesContext = state.inDisallowConditionalTypesContext;
+  state.inDisallowConditionalTypesContext = false;
+  tsFillSignature(tt.arrow);
+  state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
+}
+
+function tsParseNonArrayType() {
+  switch (state.type) {
+    case tt.name:
+      tsParseTypeReference();
+      return;
+    case tt._void:
+    case tt._null:
+      next();
+      return;
+    case tt.string:
+    case tt.num:
+    case tt.bigint:
+    case tt.decimal:
+    case tt._true:
+    case tt._false:
+      parseLiteral();
+      return;
+    case tt.minus:
+      next();
+      parseLiteral();
+      return;
+    case tt._this: {
+      tsParseThisTypeNode();
+      if (isContextual(ContextualKeyword._is) && !hasPrecedingLineBreak()) {
+        tsParseThisTypePredicate();
+      }
+      return;
+    }
+    case tt._typeof:
+      tsParseTypeQuery();
+      return;
+    case tt._import:
+      tsParseImportType();
+      return;
+    case tt.braceL:
+      if (tsLookaheadIsStartOfMappedType()) {
+        tsParseMappedType();
+      } else {
+        tsParseTypeLiteral();
+      }
+      return;
+    case tt.bracketL:
+      tsParseTupleType();
+      return;
+    case tt.parenL:
+      tsParseParenthesizedType();
+      return;
+    case tt.backQuote:
+      tsParseTemplateLiteralType();
+      return;
+    default:
+      if (state.type & TokenType.IS_KEYWORD) {
+        next();
+        state.tokens[state.tokens.length - 1].type = tt.name;
+        return;
+      }
+      break;
+  }
+
+  unexpected();
+}
+
+function tsParseArrayTypeOrHigher() {
+  tsParseNonArrayType();
+  while (!hasPrecedingLineBreak() && eat(tt.bracketL)) {
+    if (!eat(tt.bracketR)) {
+      // If we hit ] immediately, this is an array type, otherwise it's an indexed access type.
+      tsParseType();
+      expect(tt.bracketR);
+    }
+  }
+}
+
+function tsParseInferType() {
+  expectContextual(ContextualKeyword._infer);
+  parseIdentifier();
+  if (match(tt._extends)) {
+    // Infer type constraints introduce an ambiguity about whether the "extends"
+    // is a constraint for this infer type or is another conditional type.
+    const snapshot = state.snapshot();
+    expect(tt._extends);
+    const oldInDisallowConditionalTypesContext = state.inDisallowConditionalTypesContext;
+    state.inDisallowConditionalTypesContext = true;
+    tsParseType();
+    state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
+    if (state.error || (!state.inDisallowConditionalTypesContext && match(tt.question))) {
+      state.restoreFromSnapshot(snapshot);
+    }
+  }
+}
+
+function tsParseTypeOperatorOrHigher() {
+  if (
+    isContextual(ContextualKeyword._keyof) ||
+    isContextual(ContextualKeyword._unique) ||
+    isContextual(ContextualKeyword._readonly)
+  ) {
+    next();
+    tsParseTypeOperatorOrHigher();
+  } else if (isContextual(ContextualKeyword._infer)) {
+    tsParseInferType();
+  } else {
+    const oldInDisallowConditionalTypesContext = state.inDisallowConditionalTypesContext;
+    state.inDisallowConditionalTypesContext = false;
+    tsParseArrayTypeOrHigher();
+    state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
+  }
+}
+
+function tsParseIntersectionTypeOrHigher() {
+  eat(tt.bitwiseAND);
+  tsParseTypeOperatorOrHigher();
+  if (match(tt.bitwiseAND)) {
+    while (eat(tt.bitwiseAND)) {
+      tsParseTypeOperatorOrHigher();
+    }
+  }
+}
+
+function tsParseUnionTypeOrHigher() {
+  eat(tt.bitwiseOR);
+  tsParseIntersectionTypeOrHigher();
+  if (match(tt.bitwiseOR)) {
+    while (eat(tt.bitwiseOR)) {
+      tsParseIntersectionTypeOrHigher();
+    }
+  }
+}
+
+function tsIsStartOfFunctionType() {
+  if (match(tt.lessThan)) {
+    return true;
+  }
+  return match(tt.parenL) && tsLookaheadIsUnambiguouslyStartOfFunctionType();
+}
+
+function tsSkipParameterStart() {
+  if (match(tt.name) || match(tt._this)) {
+    next();
+    return true;
+  }
+  // If this is a possible array/object destructure, walk to the matching bracket/brace.
+  // The next token after will tell us definitively whether this is a function param.
+  if (match(tt.braceL) || match(tt.bracketL)) {
+    let depth = 1;
+    next();
+    while (depth > 0 && !state.error) {
+      if (match(tt.braceL) || match(tt.bracketL)) {
+        depth++;
+      } else if (match(tt.braceR) || match(tt.bracketR)) {
+        depth--;
+      }
+      next();
+    }
+    return true;
+  }
+  return false;
+}
+
+function tsLookaheadIsUnambiguouslyStartOfFunctionType() {
+  const snapshot = state.snapshot();
+  const isUnambiguouslyStartOfFunctionType = tsIsUnambiguouslyStartOfFunctionType();
+  state.restoreFromSnapshot(snapshot);
+  return isUnambiguouslyStartOfFunctionType;
+}
+
+function tsIsUnambiguouslyStartOfFunctionType() {
+  next();
+  if (match(tt.parenR) || match(tt.ellipsis)) {
+    // ( )
+    // ( ...
+    return true;
+  }
+  if (tsSkipParameterStart()) {
+    if (match(tt.colon) || match(tt.comma) || match(tt.question) || match(tt.eq)) {
+      // ( xxx :
+      // ( xxx ,
+      // ( xxx ?
+      // ( xxx =
+      return true;
+    }
+    if (match(tt.parenR)) {
+      next();
+      if (match(tt.arrow)) {
+        // ( xxx ) =>
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+function tsParseTypeOrTypePredicateAnnotation(returnToken) {
+  const oldIsType = pushTypeContext(0);
+  expect(returnToken);
+  const finishedReturn = tsParseTypePredicateOrAssertsPrefix();
+  if (!finishedReturn) {
+    tsParseType();
+  }
+  popTypeContext(oldIsType);
+}
+
+function tsTryParseTypeOrTypePredicateAnnotation() {
+  if (match(tt.colon)) {
+    tsParseTypeOrTypePredicateAnnotation(tt.colon);
+  }
+}
+
+export function tsTryParseTypeAnnotation() {
+  if (match(tt.colon)) {
+    tsParseTypeAnnotation();
+  }
+}
+
+function tsTryParseType() {
+  if (eat(tt.colon)) {
+    tsParseType();
+  }
+}
+
+/**
+ * Detect a few special return syntax cases: `x is T`, `asserts x`, `asserts x is T`,
+ * `asserts this is T`.
+ *
+ * Returns true if we parsed the return type, false if there's still a type to be parsed.
+ */
+function tsParseTypePredicateOrAssertsPrefix() {
+  const snapshot = state.snapshot();
+  if (isContextual(ContextualKeyword._asserts)) {
+    // Normally this is `asserts x is T`, but at this point, it might be `asserts is T` (a user-
+    // defined type guard on the `asserts` variable) or just a type called `asserts`.
+    next();
+    if (eatContextual(ContextualKeyword._is)) {
+      // If we see `asserts is`, then this must be of the form `asserts is T`, since
+      // `asserts is is T` isn't valid.
+      tsParseType();
+      return true;
+    } else if (tsIsIdentifier() || match(tt._this)) {
+      next();
+      if (eatContextual(ContextualKeyword._is)) {
+        // If we see `is`, then this is `asserts x is T`. Otherwise, it's `asserts x`.
+        tsParseType();
+      }
+      return true;
+    } else {
+      // Regular type, so bail out and start type parsing from scratch.
+      state.restoreFromSnapshot(snapshot);
+      return false;
+    }
+  } else if (tsIsIdentifier() || match(tt._this)) {
+    // This is a regular identifier, which may or may not have "is" after it.
+    next();
+    if (isContextual(ContextualKeyword._is) && !hasPrecedingLineBreak()) {
+      next();
+      tsParseType();
+      return true;
+    } else {
+      // Regular type, so bail out and start type parsing from scratch.
+      state.restoreFromSnapshot(snapshot);
+      return false;
+    }
+  }
+  return false;
+}
+
+export function tsParseTypeAnnotation() {
+  const oldIsType = pushTypeContext(0);
+  expect(tt.colon);
+  tsParseType();
+  popTypeContext(oldIsType);
+}
+
+export function tsParseType() {
+  tsParseNonConditionalType();
+  if (state.inDisallowConditionalTypesContext || hasPrecedingLineBreak() || !eat(tt._extends)) {
+    return;
+  }
+  // extends type
+  const oldInDisallowConditionalTypesContext = state.inDisallowConditionalTypesContext;
+  state.inDisallowConditionalTypesContext = true;
+  tsParseNonConditionalType();
+  state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
+
+  expect(tt.question);
+  // true type
+  tsParseType();
+  expect(tt.colon);
+  // false type
+  tsParseType();
+}
+
+function isAbstractConstructorSignature() {
+  return isContextual(ContextualKeyword._abstract) && lookaheadType() === tt._new;
+}
+
+export function tsParseNonConditionalType() {
+  if (tsIsStartOfFunctionType()) {
+    tsParseFunctionOrConstructorType(FunctionType.TSFunctionType);
+    return;
+  }
+  if (match(tt._new)) {
+    // As in `new () => Date`
+    tsParseFunctionOrConstructorType(FunctionType.TSConstructorType);
+    return;
+  } else if (isAbstractConstructorSignature()) {
+    // As in `abstract new () => Date`
+    tsParseFunctionOrConstructorType(FunctionType.TSAbstractConstructorType);
+    return;
+  }
+  tsParseUnionTypeOrHigher();
+}
+
+export function tsParseTypeAssertion() {
+  const oldIsType = pushTypeContext(1);
+  tsParseType();
+  expect(tt.greaterThan);
+  popTypeContext(oldIsType);
+  parseMaybeUnary();
+}
+
+export function tsTryParseJSXTypeArgument() {
+  if (eat(tt.jsxTagStart)) {
+    state.tokens[state.tokens.length - 1].type = tt.typeParameterStart;
+    const oldIsType = pushTypeContext(1);
+    while (!match(tt.greaterThan) && !state.error) {
+      tsParseType();
+      eat(tt.comma);
+    }
+    // Process >, but the one after needs to be parsed JSX-style.
+    nextJSXTagToken();
+    popTypeContext(oldIsType);
+  }
+}
+
+function tsParseHeritageClause() {
+  while (!match(tt.braceL) && !state.error) {
+    tsParseExpressionWithTypeArguments();
+    eat(tt.comma);
+  }
+}
+
+function tsParseExpressionWithTypeArguments() {
+  // Note: TS uses parseLeftHandSideExpressionOrHigher,
+  // then has grammar errors later if it's not an EntityName.
+  tsParseEntityName();
+  if (match(tt.lessThan)) {
+    tsParseTypeArguments();
+  }
+}
+
+function tsParseInterfaceDeclaration() {
+  parseBindingIdentifier(false);
+  tsTryParseTypeParameters();
+  if (eat(tt._extends)) {
+    tsParseHeritageClause();
+  }
+  tsParseObjectTypeMembers();
+}
+
+function tsParseTypeAliasDeclaration() {
+  parseBindingIdentifier(false);
+  tsTryParseTypeParameters();
+  expect(tt.eq);
+  tsParseType();
+  semicolon();
+}
+
+function tsParseEnumMember() {
+  // Computed property names are grammar errors in an enum, so accept just string literal or identifier.
+  if (match(tt.string)) {
+    parseLiteral();
+  } else {
+    parseIdentifier();
+  }
+  if (eat(tt.eq)) {
+    const eqIndex = state.tokens.length - 1;
+    parseMaybeAssign();
+    state.tokens[eqIndex].rhsEndIndex = state.tokens.length;
+  }
+}
+
+function tsParseEnumDeclaration() {
+  parseBindingIdentifier(false);
+  expect(tt.braceL);
+  while (!eat(tt.braceR) && !state.error) {
+    tsParseEnumMember();
+    eat(tt.comma);
+  }
+}
+
+function tsParseModuleBlock() {
+  expect(tt.braceL);
+  parseBlockBody(/* end */ tt.braceR);
+}
+
+function tsParseModuleOrNamespaceDeclaration() {
+  parseBindingIdentifier(false);
+  if (eat(tt.dot)) {
+    tsParseModuleOrNamespaceDeclaration();
+  } else {
+    tsParseModuleBlock();
+  }
+}
+
+function tsParseAmbientExternalModuleDeclaration() {
+  if (isContextual(ContextualKeyword._global)) {
+    parseIdentifier();
+  } else if (match(tt.string)) {
+    parseExprAtom();
+  } else {
+    unexpected();
+  }
+
+  if (match(tt.braceL)) {
+    tsParseModuleBlock();
+  } else {
+    semicolon();
+  }
+}
+
+export function tsParseImportEqualsDeclaration() {
+  parseImportedIdentifier();
+  expect(tt.eq);
+  tsParseModuleReference();
+  semicolon();
+}
+
+function tsIsExternalModuleReference() {
+  return isContextual(ContextualKeyword._require) && lookaheadType() === tt.parenL;
+}
+
+function tsParseModuleReference() {
+  if (tsIsExternalModuleReference()) {
+    tsParseExternalModuleReference();
+  } else {
+    tsParseEntityName();
+  }
+}
+
+function tsParseExternalModuleReference() {
+  expectContextual(ContextualKeyword._require);
+  expect(tt.parenL);
+  if (!match(tt.string)) {
+    unexpected();
+  }
+  parseLiteral();
+  expect(tt.parenR);
+}
+
+// Utilities
+
+// Returns true if a statement matched.
+function tsTryParseDeclare() {
+  if (isLineTerminator()) {
+    return false;
+  }
+  switch (state.type) {
+    case tt._function: {
+      const oldIsType = pushTypeContext(1);
+      next();
+      // We don't need to precisely get the function start here, since it's only used to mark
+      // the function as a type if it's bodiless, and it's already a type here.
+      const functionStart = state.start;
+      parseFunction(functionStart, /* isStatement */ true);
+      popTypeContext(oldIsType);
+      return true;
+    }
+    case tt._class: {
+      const oldIsType = pushTypeContext(1);
+      parseClass(/* isStatement */ true, /* optionalId */ false);
+      popTypeContext(oldIsType);
+      return true;
+    }
+    case tt._const: {
+      if (match(tt._const) && isLookaheadContextual(ContextualKeyword._enum)) {
+        const oldIsType = pushTypeContext(1);
+        // `const enum = 0;` not allowed because "enum" is a strict mode reserved word.
+        expect(tt._const);
+        expectContextual(ContextualKeyword._enum);
+        state.tokens[state.tokens.length - 1].type = tt._enum;
+        tsParseEnumDeclaration();
+        popTypeContext(oldIsType);
+        return true;
+      }
+    }
+    // falls through
+    case tt._var:
+    case tt._let: {
+      const oldIsType = pushTypeContext(1);
+      parseVarStatement(state.type !== tt._var);
+      popTypeContext(oldIsType);
+      return true;
+    }
+    case tt.name: {
+      const oldIsType = pushTypeContext(1);
+      const contextualKeyword = state.contextualKeyword;
+      let matched = false;
+      if (contextualKeyword === ContextualKeyword._global) {
+        tsParseAmbientExternalModuleDeclaration();
+        matched = true;
+      } else {
+        matched = tsParseDeclaration(contextualKeyword, /* isBeforeToken */ true);
+      }
+      popTypeContext(oldIsType);
+      return matched;
+    }
+    default:
+      return false;
+  }
+}
+
+// Note: this won't be called unless the keyword is allowed in `shouldParseExportDeclaration`.
+// Returns true if it matched a declaration.
+function tsTryParseExportDeclaration() {
+  return tsParseDeclaration(state.contextualKeyword, /* isBeforeToken */ true);
+}
+
+// Returns true if it matched a statement.
+function tsParseExpressionStatement(contextualKeyword) {
+  switch (contextualKeyword) {
+    case ContextualKeyword._declare: {
+      const declareTokenIndex = state.tokens.length - 1;
+      const matched = tsTryParseDeclare();
+      if (matched) {
+        state.tokens[declareTokenIndex].type = tt._declare;
+        return true;
+      }
+      break;
+    }
+    case ContextualKeyword._global:
+      // `global { }` (with no `declare`) may appear inside an ambient module declaration.
+      // Would like to use tsParseAmbientExternalModuleDeclaration here, but already ran past "global".
+      if (match(tt.braceL)) {
+        tsParseModuleBlock();
+        return true;
+      }
+      break;
+
+    default:
+      return tsParseDeclaration(contextualKeyword, /* isBeforeToken */ false);
+  }
+  return false;
+}
+
+/**
+ * Common code for parsing a declaration.
+ *
+ * isBeforeToken indicates that the current parser state is at the contextual
+ * keyword (and that it is not yet emitted) rather than reading the token after
+ * it. When isBeforeToken is true, we may be preceded by an `export` token and
+ * should include that token in a type context we create, e.g. to handle
+ * `export interface` or `export type`. (This is a bit of a hack and should be
+ * cleaned up at some point.)
+ *
+ * Returns true if it matched a declaration.
+ */
+function tsParseDeclaration(contextualKeyword, isBeforeToken) {
+  switch (contextualKeyword) {
+    case ContextualKeyword._abstract:
+      if (tsCheckLineTerminator(isBeforeToken) && match(tt._class)) {
+        state.tokens[state.tokens.length - 1].type = tt._abstract;
+        parseClass(/* isStatement */ true, /* optionalId */ false);
+        return true;
+      }
+      break;
+
+    case ContextualKeyword._enum:
+      if (tsCheckLineTerminator(isBeforeToken) && match(tt.name)) {
+        state.tokens[state.tokens.length - 1].type = tt._enum;
+        tsParseEnumDeclaration();
+        return true;
+      }
+      break;
+
+    case ContextualKeyword._interface:
+      if (tsCheckLineTerminator(isBeforeToken) && match(tt.name)) {
+        // `next` is true in "export" and "declare" contexts, so we want to remove that token
+        // as well.
+        const oldIsType = pushTypeContext(isBeforeToken ? 2 : 1);
+        tsParseInterfaceDeclaration();
+        popTypeContext(oldIsType);
+        return true;
+      }
+      break;
+
+    case ContextualKeyword._module:
+      if (tsCheckLineTerminator(isBeforeToken)) {
+        if (match(tt.string)) {
+          const oldIsType = pushTypeContext(isBeforeToken ? 2 : 1);
+          tsParseAmbientExternalModuleDeclaration();
+          popTypeContext(oldIsType);
+          return true;
+        } else if (match(tt.name)) {
+          const oldIsType = pushTypeContext(isBeforeToken ? 2 : 1);
+          tsParseModuleOrNamespaceDeclaration();
+          popTypeContext(oldIsType);
+          return true;
+        }
+      }
+      break;
+
+    case ContextualKeyword._namespace:
+      if (tsCheckLineTerminator(isBeforeToken) && match(tt.name)) {
+        const oldIsType = pushTypeContext(isBeforeToken ? 2 : 1);
+        tsParseModuleOrNamespaceDeclaration();
+        popTypeContext(oldIsType);
+        return true;
+      }
+      break;
+
+    case ContextualKeyword._type:
+      if (tsCheckLineTerminator(isBeforeToken) && match(tt.name)) {
+        const oldIsType = pushTypeContext(isBeforeToken ? 2 : 1);
+        tsParseTypeAliasDeclaration();
+        popTypeContext(oldIsType);
+        return true;
+      }
+      break;
+
+    default:
+      break;
+  }
+  return false;
+}
+
+function tsCheckLineTerminator(isBeforeToken) {
+  if (isBeforeToken) {
+    // Babel checks hasFollowingLineBreak here and returns false, but this
+    // doesn't actually come up, e.g. `export interface` can never be on its own
+    // line in valid code.
+    next();
+    return true;
+  } else {
+    return !isLineTerminator();
+  }
+}
+
+// Returns true if there was a generic async arrow function.
+function tsTryParseGenericAsyncArrowFunction() {
+  const snapshot = state.snapshot();
+
+  tsParseTypeParameters();
+  parseFunctionParams();
+  tsTryParseTypeOrTypePredicateAnnotation();
+  expect(tt.arrow);
+
+  if (state.error) {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  }
+
+  parseFunctionBody(true);
+  return true;
+}
+
+/**
+ * If necessary, hack the tokenizer state so that this bitshift was actually a
+ * less-than token, then keep parsing. This should only be used in situations
+ * where we restore from snapshot on error (which reverts this change) or
+ * where bitshift would be illegal anyway (e.g. in a class "extends" clause).
+ *
+ * This hack is useful to handle situations like foo<<T>() => void>() where
+ * there can legitimately be two open-angle-brackets in a row in TS.
+ */
+function tsParseTypeArgumentsWithPossibleBitshift() {
+  if (state.type === tt.bitShiftL) {
+    state.pos -= 1;
+    finishToken(tt.lessThan);
+  }
+  tsParseTypeArguments();
+}
+
+function tsParseTypeArguments() {
+  const oldIsType = pushTypeContext(0);
+  expect(tt.lessThan);
+  while (!match(tt.greaterThan) && !state.error) {
+    tsParseType();
+    eat(tt.comma);
+  }
+  if (!oldIsType) {
+    // If the type arguments are present in an expression context, e.g.
+    // f<number>(), then the > sign should be tokenized as a non-type token.
+    // In particular, f(a < b, c >= d) should parse the >= as a single token,
+    // resulting in a syntax error and fallback to the non-type-args
+    // interpretation. In the success case, even though the > is tokenized as a
+    // non-type token, it still must be marked as a type token so that it is
+    // erased.
+    popTypeContext(oldIsType);
+    rescan_gt();
+    expect(tt.greaterThan);
+    state.tokens[state.tokens.length - 1].isType = true;
+  } else {
+    expect(tt.greaterThan);
+    popTypeContext(oldIsType);
+  }
+}
+
+export function tsIsDeclarationStart() {
+  if (match(tt.name)) {
+    switch (state.contextualKeyword) {
+      case ContextualKeyword._abstract:
+      case ContextualKeyword._declare:
+      case ContextualKeyword._enum:
+      case ContextualKeyword._interface:
+      case ContextualKeyword._module:
+      case ContextualKeyword._namespace:
+      case ContextualKeyword._type:
+        return true;
+      default:
+        break;
+    }
+  }
+
+  return false;
+}
+
+// ======================================================
+// OVERRIDES
+// ======================================================
+
+export function tsParseFunctionBodyAndFinish(functionStart, funcContextId) {
+  // For arrow functions, `parseArrow` handles the return type itself.
+  if (match(tt.colon)) {
+    tsParseTypeOrTypePredicateAnnotation(tt.colon);
+  }
+
+  // The original code checked the node type to make sure this function type allows a missing
+  // body, but we skip that to avoid sending around the node type. We instead just use the
+  // allowExpressionBody boolean to make sure it's not an arrow function.
+  if (!match(tt.braceL) && isLineTerminator()) {
+    // Retroactively mark the function declaration as a type.
+    let i = state.tokens.length - 1;
+    while (
+      i >= 0 &&
+      (state.tokens[i].start >= functionStart ||
+        state.tokens[i].type === tt._default ||
+        state.tokens[i].type === tt._export)
+    ) {
+      state.tokens[i].isType = true;
+      i--;
+    }
+    return;
+  }
+
+  parseFunctionBody(false, funcContextId);
+}
+
+export function tsParseSubscript(
+  startTokenIndex,
+  noCalls,
+  stopState,
+) {
+  if (!hasPrecedingLineBreak() && eat(tt.bang)) {
+    state.tokens[state.tokens.length - 1].type = tt.nonNullAssertion;
+    return;
+  }
+
+  if (match(tt.lessThan) || match(tt.bitShiftL)) {
+    // There are number of things we are going to "maybe" parse, like type arguments on
+    // tagged template expressions. If any of them fail, walk it back and continue.
+    const snapshot = state.snapshot();
+
+    if (!noCalls && atPossibleAsync()) {
+      // Almost certainly this is a generic async function `async <T>() => ...
+      // But it might be a call with a type argument `async<T>();`
+      const asyncArrowFn = tsTryParseGenericAsyncArrowFunction();
+      if (asyncArrowFn) {
+        return;
+      }
+    }
+    tsParseTypeArgumentsWithPossibleBitshift();
+    if (!noCalls && eat(tt.parenL)) {
+      // With f<T>(), the subscriptStartIndex marker is on the ( token.
+      state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+      parseCallExpressionArguments();
+    } else if (match(tt.backQuote)) {
+      // Tagged template with a type argument.
+      parseTemplate();
+    } else if (
+      // The remaining possible case is an instantiation expression, e.g.
+      // Array<number> . Check for a few cases that would disqualify it and
+      // cause us to bail out.
+      // a<b>>c is not (a<b>)>c, but a<(b>>c)
+      state.type === tt.greaterThan ||
+      // a<b>c is (a<b)>c
+      (state.type !== tt.parenL &&
+        Boolean(state.type & TokenType.IS_EXPRESSION_START) &&
+        !hasPrecedingLineBreak())
+    ) {
+      // Bail out. We have something like a<b>c, which is not an expression with
+      // type arguments but an (a < b) > c comparison.
+      unexpected();
+    }
+
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+    } else {
+      return;
+    }
+  } else if (!noCalls && match(tt.questionDot) && lookaheadType() === tt.lessThan) {
+    // If we see f?.<, then this must be an optional call with a type argument.
+    next();
+    state.tokens[startTokenIndex].isOptionalChainStart = true;
+    // With f?.<T>(), the subscriptStartIndex marker is on the ?. token.
+    state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+
+    tsParseTypeArguments();
+    expect(tt.parenL);
+    parseCallExpressionArguments();
+  }
+  baseParseSubscript(startTokenIndex, noCalls, stopState);
+}
+
+export function tsTryParseExport() {
+  if (eat(tt._import)) {
+    // One of these cases:
+    // export import A = B;
+    // export import type A = require("A");
+    if (isContextual(ContextualKeyword._type) && lookaheadType() !== tt.eq) {
+      // Eat a `type` token, unless it's actually an identifier name.
+      expectContextual(ContextualKeyword._type);
+    }
+    tsParseImportEqualsDeclaration();
+    return true;
+  } else if (eat(tt.eq)) {
+    // `export = x;`
+    parseExpression();
+    semicolon();
+    return true;
+  } else if (eatContextual(ContextualKeyword._as)) {
+    // `export as namespace A;`
+    // See `parseNamespaceExportDeclaration` in TypeScript's own parser
+    expectContextual(ContextualKeyword._namespace);
+    parseIdentifier();
+    semicolon();
+    return true;
+  } else {
+    if (isContextual(ContextualKeyword._type)) {
+      const nextType = lookaheadType();
+      // export type {foo} from 'a';
+      // export type * from 'a';'
+      // export type * as ns from 'a';'
+      if (nextType === tt.braceL || nextType === tt.star) {
+        next();
+      }
+    }
+    return false;
+  }
+}
+
+/**
+ * Parse a TS import specifier, which may be prefixed with "type" and may be of
+ * the form `foo as bar`.
+ *
+ * The number of identifier-like tokens we see happens to be enough to uniquely
+ * identify the form, so simply count the number of identifiers rather than
+ * matching the words `type` or `as`. This is particularly important because
+ * `type` and `as` could each actually be plain identifiers rather than
+ * keywords.
+ */
+export function tsParseImportSpecifier() {
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // import {foo}
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportDeclaration;
+    return;
+  }
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // import {type foo}
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportDeclaration;
+    state.tokens[state.tokens.length - 2].isType = true;
+    state.tokens[state.tokens.length - 1].isType = true;
+    return;
+  }
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // import {foo as bar}
+    state.tokens[state.tokens.length - 3].identifierRole = IdentifierRole.ImportAccess;
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportDeclaration;
+    return;
+  }
+  parseIdentifier();
+  // import {type foo as bar}
+  state.tokens[state.tokens.length - 3].identifierRole = IdentifierRole.ImportAccess;
+  state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportDeclaration;
+  state.tokens[state.tokens.length - 4].isType = true;
+  state.tokens[state.tokens.length - 3].isType = true;
+  state.tokens[state.tokens.length - 2].isType = true;
+  state.tokens[state.tokens.length - 1].isType = true;
+}
+
+/**
+ * Just like named import specifiers, export specifiers can have from 1 to 4
+ * tokens, inclusive, and the number of tokens determines the role of each token.
+ */
+export function tsParseExportSpecifier() {
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // export {foo}
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ExportAccess;
+    return;
+  }
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // export {type foo}
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ExportAccess;
+    state.tokens[state.tokens.length - 2].isType = true;
+    state.tokens[state.tokens.length - 1].isType = true;
+    return;
+  }
+  parseIdentifier();
+  if (match(tt.comma) || match(tt.braceR)) {
+    // export {foo as bar}
+    state.tokens[state.tokens.length - 3].identifierRole = IdentifierRole.ExportAccess;
+    return;
+  }
+  parseIdentifier();
+  // export {type foo as bar}
+  state.tokens[state.tokens.length - 3].identifierRole = IdentifierRole.ExportAccess;
+  state.tokens[state.tokens.length - 4].isType = true;
+  state.tokens[state.tokens.length - 3].isType = true;
+  state.tokens[state.tokens.length - 2].isType = true;
+  state.tokens[state.tokens.length - 1].isType = true;
+}
+
+export function tsTryParseExportDefaultExpression() {
+  if (isContextual(ContextualKeyword._abstract) && lookaheadType() === tt._class) {
+    state.type = tt._abstract;
+    next(); // Skip "abstract"
+    parseClass(true, true);
+    return true;
+  }
+  if (isContextual(ContextualKeyword._interface)) {
+    // Make sure "export default" are considered type tokens so the whole thing is removed.
+    const oldIsType = pushTypeContext(2);
+    tsParseDeclaration(ContextualKeyword._interface, true);
+    popTypeContext(oldIsType);
+    return true;
+  }
+  return false;
+}
+
+export function tsTryParseStatementContent() {
+  if (state.type === tt._const) {
+    const ahead = lookaheadTypeAndKeyword();
+    if (ahead.type === tt.name && ahead.contextualKeyword === ContextualKeyword._enum) {
+      expect(tt._const);
+      expectContextual(ContextualKeyword._enum);
+      state.tokens[state.tokens.length - 1].type = tt._enum;
+      tsParseEnumDeclaration();
+      return true;
+    }
+  }
+  return false;
+}
+
+export function tsTryParseClassMemberWithIsStatic(isStatic) {
+  const memberStartIndexAfterStatic = state.tokens.length;
+  tsParseModifiers([
+    ContextualKeyword._abstract,
+    ContextualKeyword._readonly,
+    ContextualKeyword._declare,
+    ContextualKeyword._static,
+    ContextualKeyword._override,
+  ]);
+
+  const modifiersEndIndex = state.tokens.length;
+  const found = tsTryParseIndexSignature();
+  if (found) {
+    // Index signatures are type declarations, so set the modifier tokens as
+    // type tokens. Most tokens could be assumed to be type tokens, but `static`
+    // is ambiguous unless we set it explicitly here.
+    const memberStartIndex = isStatic
+      ? memberStartIndexAfterStatic - 1
+      : memberStartIndexAfterStatic;
+    for (let i = memberStartIndex; i < modifiersEndIndex; i++) {
+      state.tokens[i].isType = true;
+    }
+    return true;
+  }
+  return false;
+}
+
+// Note: The reason we do this in `parseIdentifierStatement` and not `parseStatement`
+// is that e.g. `type()` is valid JS, so we must try parsing that first.
+// If it's really a type, we will parse `type` as the statement, and can correct it here
+// by parsing the rest.
+export function tsParseIdentifierStatement(contextualKeyword) {
+  const matched = tsParseExpressionStatement(contextualKeyword);
+  if (!matched) {
+    semicolon();
+  }
+}
+
+export function tsParseExportDeclaration() {
+  // "export declare" is equivalent to just "export".
+  const isDeclare = eatContextual(ContextualKeyword._declare);
+  if (isDeclare) {
+    state.tokens[state.tokens.length - 1].type = tt._declare;
+  }
+
+  let matchedDeclaration = false;
+  if (match(tt.name)) {
+    if (isDeclare) {
+      const oldIsType = pushTypeContext(2);
+      matchedDeclaration = tsTryParseExportDeclaration();
+      popTypeContext(oldIsType);
+    } else {
+      matchedDeclaration = tsTryParseExportDeclaration();
+    }
+  }
+  if (!matchedDeclaration) {
+    if (isDeclare) {
+      const oldIsType = pushTypeContext(2);
+      parseStatement(true);
+      popTypeContext(oldIsType);
+    } else {
+      parseStatement(true);
+    }
+  }
+}
+
+export function tsAfterParseClassSuper(hasSuper) {
+  if (hasSuper && (match(tt.lessThan) || match(tt.bitShiftL))) {
+    tsParseTypeArgumentsWithPossibleBitshift();
+  }
+  if (eatContextual(ContextualKeyword._implements)) {
+    state.tokens[state.tokens.length - 1].type = tt._implements;
+    const oldIsType = pushTypeContext(1);
+    tsParseHeritageClause();
+    popTypeContext(oldIsType);
+  }
+}
+
+export function tsStartParseObjPropValue() {
+  tsTryParseTypeParameters();
+}
+
+export function tsStartParseFunctionParams() {
+  tsTryParseTypeParameters();
+}
+
+// `let x: number;`
+export function tsAfterParseVarHead() {
+  const oldIsType = pushTypeContext(0);
+  if (!hasPrecedingLineBreak()) {
+    eat(tt.bang);
+  }
+  tsTryParseTypeAnnotation();
+  popTypeContext(oldIsType);
+}
+
+// parse the return type of an async arrow function - let foo = (async (): number => {});
+export function tsStartParseAsyncArrowFromCallExpression() {
+  if (match(tt.colon)) {
+    tsParseTypeAnnotation();
+  }
+}
+
+// Returns true if the expression was an arrow function.
+export function tsParseMaybeAssign(noIn, isWithinParens) {
+  // Note: When the JSX plugin is on, type assertions (`<T> x`) aren't valid syntax.
+  if (isJSXEnabled) {
+    return tsParseMaybeAssignWithJSX(noIn, isWithinParens);
+  } else {
+    return tsParseMaybeAssignWithoutJSX(noIn, isWithinParens);
+  }
+}
+
+export function tsParseMaybeAssignWithJSX(noIn, isWithinParens) {
+  if (!match(tt.lessThan)) {
+    return baseParseMaybeAssign(noIn, isWithinParens);
+  }
+
+  // Prefer to parse JSX if possible. But may be an arrow fn.
+  const snapshot = state.snapshot();
+  let wasArrow = baseParseMaybeAssign(noIn, isWithinParens);
+  if (state.error) {
+    state.restoreFromSnapshot(snapshot);
+  } else {
+    return wasArrow;
+  }
+
+  // Otherwise, try as type-parameterized arrow function.
+  state.type = tt.typeParameterStart;
+  // This is similar to TypeScript's `tryParseParenthesizedArrowFunctionExpression`.
+  tsParseTypeParameters();
+  wasArrow = baseParseMaybeAssign(noIn, isWithinParens);
+  if (!wasArrow) {
+    unexpected();
+  }
+
+  return wasArrow;
+}
+
+export function tsParseMaybeAssignWithoutJSX(noIn, isWithinParens) {
+  if (!match(tt.lessThan)) {
+    return baseParseMaybeAssign(noIn, isWithinParens);
+  }
+
+  const snapshot = state.snapshot();
+  // This is similar to TypeScript's `tryParseParenthesizedArrowFunctionExpression`.
+  tsParseTypeParameters();
+  const wasArrow = baseParseMaybeAssign(noIn, isWithinParens);
+  if (!wasArrow) {
+    unexpected();
+  }
+  if (state.error) {
+    state.restoreFromSnapshot(snapshot);
+  } else {
+    return wasArrow;
+  }
+
+  // Try parsing a type cast instead of an arrow function.
+  // This will start with a type assertion (via parseMaybeUnary).
+  // But don't directly call `tsParseTypeAssertion` because we want to handle any binary after it.
+  return baseParseMaybeAssign(noIn, isWithinParens);
+}
+
+export function tsParseArrow() {
+  if (match(tt.colon)) {
+    // This is different from how the TS parser does it.
+    // TS uses lookahead. Babylon parses it as a parenthesized expression and converts.
+    const snapshot = state.snapshot();
+
+    tsParseTypeOrTypePredicateAnnotation(tt.colon);
+    if (canInsertSemicolon()) unexpected();
+    if (!match(tt.arrow)) unexpected();
+
+    if (state.error) {
+      state.restoreFromSnapshot(snapshot);
+    }
+  }
+  return eat(tt.arrow);
+}
+
+// Allow type annotations inside of a parameter list.
+export function tsParseAssignableListItemTypes() {
+  const oldIsType = pushTypeContext(0);
+  eat(tt.question);
+  tsTryParseTypeAnnotation();
+  popTypeContext(oldIsType);
+}
+
+export function tsParseMaybeDecoratorArguments() {
+  if (match(tt.lessThan) || match(tt.bitShiftL)) {
+    tsParseTypeArgumentsWithPossibleBitshift();
+  }
+  baseParseMaybeDecoratorArguments();
+}
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/index.js b/node_modules/sucrase/dist/esm/parser/tokenizer/index.js
new file mode 100644
index 0000000..69f286a
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/index.js
@@ -0,0 +1,1004 @@
+/* eslint max-len: 0 */
+
+import {input, isFlowEnabled, state} from "../traverser/base";
+import {unexpected} from "../traverser/util";
+import {charCodes} from "../util/charcodes";
+import {IS_IDENTIFIER_CHAR, IS_IDENTIFIER_START} from "../util/identifier";
+import {IS_WHITESPACE, skipWhiteSpace} from "../util/whitespace";
+import {ContextualKeyword} from "./keywords";
+import readWord from "./readWord";
+import { TokenType as tt} from "./types";
+
+export var IdentifierRole; (function (IdentifierRole) {
+  const Access = 0; IdentifierRole[IdentifierRole["Access"] = Access] = "Access";
+  const ExportAccess = Access + 1; IdentifierRole[IdentifierRole["ExportAccess"] = ExportAccess] = "ExportAccess";
+  const TopLevelDeclaration = ExportAccess + 1; IdentifierRole[IdentifierRole["TopLevelDeclaration"] = TopLevelDeclaration] = "TopLevelDeclaration";
+  const FunctionScopedDeclaration = TopLevelDeclaration + 1; IdentifierRole[IdentifierRole["FunctionScopedDeclaration"] = FunctionScopedDeclaration] = "FunctionScopedDeclaration";
+  const BlockScopedDeclaration = FunctionScopedDeclaration + 1; IdentifierRole[IdentifierRole["BlockScopedDeclaration"] = BlockScopedDeclaration] = "BlockScopedDeclaration";
+  const ObjectShorthandTopLevelDeclaration = BlockScopedDeclaration + 1; IdentifierRole[IdentifierRole["ObjectShorthandTopLevelDeclaration"] = ObjectShorthandTopLevelDeclaration] = "ObjectShorthandTopLevelDeclaration";
+  const ObjectShorthandFunctionScopedDeclaration = ObjectShorthandTopLevelDeclaration + 1; IdentifierRole[IdentifierRole["ObjectShorthandFunctionScopedDeclaration"] = ObjectShorthandFunctionScopedDeclaration] = "ObjectShorthandFunctionScopedDeclaration";
+  const ObjectShorthandBlockScopedDeclaration = ObjectShorthandFunctionScopedDeclaration + 1; IdentifierRole[IdentifierRole["ObjectShorthandBlockScopedDeclaration"] = ObjectShorthandBlockScopedDeclaration] = "ObjectShorthandBlockScopedDeclaration";
+  const ObjectShorthand = ObjectShorthandBlockScopedDeclaration + 1; IdentifierRole[IdentifierRole["ObjectShorthand"] = ObjectShorthand] = "ObjectShorthand";
+  // Any identifier bound in an import statement, e.g. both A and b from
+  // `import A, * as b from 'A';`
+  const ImportDeclaration = ObjectShorthand + 1; IdentifierRole[IdentifierRole["ImportDeclaration"] = ImportDeclaration] = "ImportDeclaration";
+  const ObjectKey = ImportDeclaration + 1; IdentifierRole[IdentifierRole["ObjectKey"] = ObjectKey] = "ObjectKey";
+  // The `foo` in `import {foo as bar} from "./abc";`.
+  const ImportAccess = ObjectKey + 1; IdentifierRole[IdentifierRole["ImportAccess"] = ImportAccess] = "ImportAccess";
+})(IdentifierRole || (IdentifierRole = {}));
+
+/**
+ * Extra information on jsxTagStart tokens, used to determine which of the three
+ * jsx functions are called in the automatic transform.
+ */
+export var JSXRole; (function (JSXRole) {
+  // The element is self-closing or has a body that resolves to empty. We
+  // shouldn't emit children at all in this case.
+  const NoChildren = 0; JSXRole[JSXRole["NoChildren"] = NoChildren] = "NoChildren";
+  // The element has a single explicit child, which might still be an arbitrary
+  // expression like an array. We should emit that expression as the children.
+  const OneChild = NoChildren + 1; JSXRole[JSXRole["OneChild"] = OneChild] = "OneChild";
+  // The element has at least two explicitly-specified children or has spread
+  // children, so child positions are assumed to be "static". We should wrap
+  // these children in an array.
+  const StaticChildren = OneChild + 1; JSXRole[JSXRole["StaticChildren"] = StaticChildren] = "StaticChildren";
+  // The element has a prop named "key" after a prop spread, so we should fall
+  // back to the createElement function.
+  const KeyAfterPropSpread = StaticChildren + 1; JSXRole[JSXRole["KeyAfterPropSpread"] = KeyAfterPropSpread] = "KeyAfterPropSpread";
+})(JSXRole || (JSXRole = {}));
+
+export function isDeclaration(token) {
+  const role = token.identifierRole;
+  return (
+    role === IdentifierRole.TopLevelDeclaration ||
+    role === IdentifierRole.FunctionScopedDeclaration ||
+    role === IdentifierRole.BlockScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandTopLevelDeclaration ||
+    role === IdentifierRole.ObjectShorthandFunctionScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandBlockScopedDeclaration
+  );
+}
+
+export function isNonTopLevelDeclaration(token) {
+  const role = token.identifierRole;
+  return (
+    role === IdentifierRole.FunctionScopedDeclaration ||
+    role === IdentifierRole.BlockScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandFunctionScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandBlockScopedDeclaration
+  );
+}
+
+export function isTopLevelDeclaration(token) {
+  const role = token.identifierRole;
+  return (
+    role === IdentifierRole.TopLevelDeclaration ||
+    role === IdentifierRole.ObjectShorthandTopLevelDeclaration ||
+    role === IdentifierRole.ImportDeclaration
+  );
+}
+
+export function isBlockScopedDeclaration(token) {
+  const role = token.identifierRole;
+  // Treat top-level declarations as block scope since the distinction doesn't matter here.
+  return (
+    role === IdentifierRole.TopLevelDeclaration ||
+    role === IdentifierRole.BlockScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandTopLevelDeclaration ||
+    role === IdentifierRole.ObjectShorthandBlockScopedDeclaration
+  );
+}
+
+export function isFunctionScopedDeclaration(token) {
+  const role = token.identifierRole;
+  return (
+    role === IdentifierRole.FunctionScopedDeclaration ||
+    role === IdentifierRole.ObjectShorthandFunctionScopedDeclaration
+  );
+}
+
+export function isObjectShorthandDeclaration(token) {
+  return (
+    token.identifierRole === IdentifierRole.ObjectShorthandTopLevelDeclaration ||
+    token.identifierRole === IdentifierRole.ObjectShorthandBlockScopedDeclaration ||
+    token.identifierRole === IdentifierRole.ObjectShorthandFunctionScopedDeclaration
+  );
+}
+
+// Object type used to represent tokens. Note that normally, tokens
+// simply exist as properties on the parser object. This is only
+// used for the onToken callback and the external tokenizer.
+export class Token {
+  constructor() {
+    this.type = state.type;
+    this.contextualKeyword = state.contextualKeyword;
+    this.start = state.start;
+    this.end = state.end;
+    this.scopeDepth = state.scopeDepth;
+    this.isType = state.isType;
+    this.identifierRole = null;
+    this.jsxRole = null;
+    this.shadowsGlobal = false;
+    this.isAsyncOperation = false;
+    this.contextId = null;
+    this.rhsEndIndex = null;
+    this.isExpression = false;
+    this.numNullishCoalesceStarts = 0;
+    this.numNullishCoalesceEnds = 0;
+    this.isOptionalChainStart = false;
+    this.isOptionalChainEnd = false;
+    this.subscriptStartIndex = null;
+    this.nullishStartIndex = null;
+  }
+
+  
+  
+  
+  
+  
+  
+  
+  
+  // Initially false for all tokens, then may be computed in a follow-up step that does scope
+  // analysis.
+  
+  // Initially false for all tokens, but may be set during transform to mark it as containing an
+  // await operation.
+  
+  
+  // For assignments, the index of the RHS. For export tokens, the end of the export.
+  
+  // For class tokens, records if the class is a class expression or a class statement.
+  
+  // Number of times to insert a `nullishCoalesce(` snippet before this token.
+  
+  // Number of times to insert a `)` snippet after this token.
+  
+  // If true, insert an `optionalChain([` snippet before this token.
+  
+  // If true, insert a `])` snippet after this token.
+  
+  // Tag for `.`, `?.`, `[`, `?.[`, `(`, and `?.(` to denote the "root" token for this
+  // subscript chain. This can be used to determine if this chain is an optional chain.
+  
+  // Tag for `??` operators to denote the root token for this nullish coalescing call.
+  
+}
+
+// ## Tokenizer
+
+// Move to the next token
+export function next() {
+  state.tokens.push(new Token());
+  nextToken();
+}
+
+// Call instead of next when inside a template, since that needs to be handled differently.
+export function nextTemplateToken() {
+  state.tokens.push(new Token());
+  state.start = state.pos;
+  readTmplToken();
+}
+
+// The tokenizer never parses regexes by default. Instead, the parser is responsible for
+// instructing it to parse a regex when we see a slash at the start of an expression.
+export function retokenizeSlashAsRegex() {
+  if (state.type === tt.assign) {
+    --state.pos;
+  }
+  readRegexp();
+}
+
+export function pushTypeContext(existingTokensInType) {
+  for (let i = state.tokens.length - existingTokensInType; i < state.tokens.length; i++) {
+    state.tokens[i].isType = true;
+  }
+  const oldIsType = state.isType;
+  state.isType = true;
+  return oldIsType;
+}
+
+export function popTypeContext(oldIsType) {
+  state.isType = oldIsType;
+}
+
+export function eat(type) {
+  if (match(type)) {
+    next();
+    return true;
+  } else {
+    return false;
+  }
+}
+
+export function eatTypeToken(tokenType) {
+  const oldIsType = state.isType;
+  state.isType = true;
+  eat(tokenType);
+  state.isType = oldIsType;
+}
+
+export function match(type) {
+  return state.type === type;
+}
+
+export function lookaheadType() {
+  const snapshot = state.snapshot();
+  next();
+  const type = state.type;
+  state.restoreFromSnapshot(snapshot);
+  return type;
+}
+
+export class TypeAndKeyword {
+  
+  
+  constructor(type, contextualKeyword) {
+    this.type = type;
+    this.contextualKeyword = contextualKeyword;
+  }
+}
+
+export function lookaheadTypeAndKeyword() {
+  const snapshot = state.snapshot();
+  next();
+  const type = state.type;
+  const contextualKeyword = state.contextualKeyword;
+  state.restoreFromSnapshot(snapshot);
+  return new TypeAndKeyword(type, contextualKeyword);
+}
+
+export function nextTokenStart() {
+  return nextTokenStartSince(state.pos);
+}
+
+export function nextTokenStartSince(pos) {
+  skipWhiteSpace.lastIndex = pos;
+  const skip = skipWhiteSpace.exec(input);
+  return pos + skip[0].length;
+}
+
+export function lookaheadCharCode() {
+  return input.charCodeAt(nextTokenStart());
+}
+
+// Read a single token, updating the parser object's token-related
+// properties.
+export function nextToken() {
+  skipSpace();
+  state.start = state.pos;
+  if (state.pos >= input.length) {
+    const tokens = state.tokens;
+    // We normally run past the end a bit, but if we're way past the end, avoid an infinite loop.
+    // Also check the token positions rather than the types since sometimes we rewrite the token
+    // type to something else.
+    if (
+      tokens.length >= 2 &&
+      tokens[tokens.length - 1].start >= input.length &&
+      tokens[tokens.length - 2].start >= input.length
+    ) {
+      unexpected("Unexpectedly reached the end of input.");
+    }
+    finishToken(tt.eof);
+    return;
+  }
+  readToken(input.charCodeAt(state.pos));
+}
+
+function readToken(code) {
+  // Identifier or keyword. '\uXXXX' sequences are allowed in
+  // identifiers, so '\' also dispatches to that.
+  if (
+    IS_IDENTIFIER_START[code] ||
+    code === charCodes.backslash ||
+    (code === charCodes.atSign && input.charCodeAt(state.pos + 1) === charCodes.atSign)
+  ) {
+    readWord();
+  } else {
+    getTokenFromCode(code);
+  }
+}
+
+function skipBlockComment() {
+  while (
+    input.charCodeAt(state.pos) !== charCodes.asterisk ||
+    input.charCodeAt(state.pos + 1) !== charCodes.slash
+  ) {
+    state.pos++;
+    if (state.pos > input.length) {
+      unexpected("Unterminated comment", state.pos - 2);
+      return;
+    }
+  }
+  state.pos += 2;
+}
+
+export function skipLineComment(startSkip) {
+  let ch = input.charCodeAt((state.pos += startSkip));
+  if (state.pos < input.length) {
+    while (
+      ch !== charCodes.lineFeed &&
+      ch !== charCodes.carriageReturn &&
+      ch !== charCodes.lineSeparator &&
+      ch !== charCodes.paragraphSeparator &&
+      ++state.pos < input.length
+    ) {
+      ch = input.charCodeAt(state.pos);
+    }
+  }
+}
+
+// Called at the start of the parse and after every token. Skips
+// whitespace and comments.
+export function skipSpace() {
+  while (state.pos < input.length) {
+    const ch = input.charCodeAt(state.pos);
+    switch (ch) {
+      case charCodes.carriageReturn:
+        if (input.charCodeAt(state.pos + 1) === charCodes.lineFeed) {
+          ++state.pos;
+        }
+
+      case charCodes.lineFeed:
+      case charCodes.lineSeparator:
+      case charCodes.paragraphSeparator:
+        ++state.pos;
+        break;
+
+      case charCodes.slash:
+        switch (input.charCodeAt(state.pos + 1)) {
+          case charCodes.asterisk:
+            state.pos += 2;
+            skipBlockComment();
+            break;
+
+          case charCodes.slash:
+            skipLineComment(2);
+            break;
+
+          default:
+            return;
+        }
+        break;
+
+      default:
+        if (IS_WHITESPACE[ch]) {
+          ++state.pos;
+        } else {
+          return;
+        }
+    }
+  }
+}
+
+// Called at the end of every token. Sets various fields, and skips the space after the token, so
+// that the next one's `start` will point at the right position.
+export function finishToken(
+  type,
+  contextualKeyword = ContextualKeyword.NONE,
+) {
+  state.end = state.pos;
+  state.type = type;
+  state.contextualKeyword = contextualKeyword;
+}
+
+// ### Token reading
+
+// This is the function that is called to fetch the next token. It
+// is somewhat obscure, because it works in character codes rather
+// than characters, and because operator parsing has been inlined
+// into it.
+//
+// All in the name of speed.
+function readToken_dot() {
+  const nextChar = input.charCodeAt(state.pos + 1);
+  if (nextChar >= charCodes.digit0 && nextChar <= charCodes.digit9) {
+    readNumber(true);
+    return;
+  }
+
+  if (nextChar === charCodes.dot && input.charCodeAt(state.pos + 2) === charCodes.dot) {
+    state.pos += 3;
+    finishToken(tt.ellipsis);
+  } else {
+    ++state.pos;
+    finishToken(tt.dot);
+  }
+}
+
+function readToken_slash() {
+  const nextChar = input.charCodeAt(state.pos + 1);
+  if (nextChar === charCodes.equalsTo) {
+    finishOp(tt.assign, 2);
+  } else {
+    finishOp(tt.slash, 1);
+  }
+}
+
+function readToken_mult_modulo(code) {
+  // '%*'
+  let tokenType = code === charCodes.asterisk ? tt.star : tt.modulo;
+  let width = 1;
+  let nextChar = input.charCodeAt(state.pos + 1);
+
+  // Exponentiation operator **
+  if (code === charCodes.asterisk && nextChar === charCodes.asterisk) {
+    width++;
+    nextChar = input.charCodeAt(state.pos + 2);
+    tokenType = tt.exponent;
+  }
+
+  // Match *= or %=, disallowing *=> which can be valid in flow.
+  if (
+    nextChar === charCodes.equalsTo &&
+    input.charCodeAt(state.pos + 2) !== charCodes.greaterThan
+  ) {
+    width++;
+    tokenType = tt.assign;
+  }
+
+  finishOp(tokenType, width);
+}
+
+function readToken_pipe_amp(code) {
+  // '|&'
+  const nextChar = input.charCodeAt(state.pos + 1);
+
+  if (nextChar === code) {
+    if (input.charCodeAt(state.pos + 2) === charCodes.equalsTo) {
+      // ||= or &&=
+      finishOp(tt.assign, 3);
+    } else {
+      // || or &&
+      finishOp(code === charCodes.verticalBar ? tt.logicalOR : tt.logicalAND, 2);
+    }
+    return;
+  }
+
+  if (code === charCodes.verticalBar) {
+    // '|>'
+    if (nextChar === charCodes.greaterThan) {
+      finishOp(tt.pipeline, 2);
+      return;
+    } else if (nextChar === charCodes.rightCurlyBrace && isFlowEnabled) {
+      // '|}'
+      finishOp(tt.braceBarR, 2);
+      return;
+    }
+  }
+
+  if (nextChar === charCodes.equalsTo) {
+    finishOp(tt.assign, 2);
+    return;
+  }
+
+  finishOp(code === charCodes.verticalBar ? tt.bitwiseOR : tt.bitwiseAND, 1);
+}
+
+function readToken_caret() {
+  // '^'
+  const nextChar = input.charCodeAt(state.pos + 1);
+  if (nextChar === charCodes.equalsTo) {
+    finishOp(tt.assign, 2);
+  } else {
+    finishOp(tt.bitwiseXOR, 1);
+  }
+}
+
+function readToken_plus_min(code) {
+  // '+-'
+  const nextChar = input.charCodeAt(state.pos + 1);
+
+  if (nextChar === code) {
+    // Tentatively call this a prefix operator, but it might be changed to postfix later.
+    finishOp(tt.preIncDec, 2);
+    return;
+  }
+
+  if (nextChar === charCodes.equalsTo) {
+    finishOp(tt.assign, 2);
+  } else if (code === charCodes.plusSign) {
+    finishOp(tt.plus, 1);
+  } else {
+    finishOp(tt.minus, 1);
+  }
+}
+
+function readToken_lt() {
+  const nextChar = input.charCodeAt(state.pos + 1);
+
+  if (nextChar === charCodes.lessThan) {
+    if (input.charCodeAt(state.pos + 2) === charCodes.equalsTo) {
+      finishOp(tt.assign, 3);
+      return;
+    }
+    // We see <<, but need to be really careful about whether to treat it as a
+    // true left-shift or as two < tokens.
+    if (state.isType) {
+      // Within a type, << might come up in a snippet like `Array<<T>() => void>`,
+      // so treat it as two < tokens. Importantly, this should only override <<
+      // rather than other tokens like <= . If we treated <= as < in a type
+      // context, then the snippet `a as T <= 1` would incorrectly start parsing
+      // a type argument on T. We don't need to worry about `a as T << 1`
+      // because TypeScript disallows that syntax.
+      finishOp(tt.lessThan, 1);
+    } else {
+      // Outside a type, this might be a true left-shift operator, or it might
+      // still be two open-type-arg tokens, such as in `f<<T>() => void>()`. We
+      // look at the token while considering the `f`, so we don't yet know that
+      // we're in a type context. In this case, we initially tokenize as a
+      // left-shift and correct after-the-fact as necessary in
+      // tsParseTypeArgumentsWithPossibleBitshift .
+      finishOp(tt.bitShiftL, 2);
+    }
+    return;
+  }
+
+  if (nextChar === charCodes.equalsTo) {
+    // <=
+    finishOp(tt.relationalOrEqual, 2);
+  } else {
+    finishOp(tt.lessThan, 1);
+  }
+}
+
+function readToken_gt() {
+  if (state.isType) {
+    // Avoid right-shift for things like `Array<Array<string>>` and
+    // greater-than-or-equal for things like `const a: Array<number>=[];`.
+    finishOp(tt.greaterThan, 1);
+    return;
+  }
+
+  const nextChar = input.charCodeAt(state.pos + 1);
+
+  if (nextChar === charCodes.greaterThan) {
+    const size = input.charCodeAt(state.pos + 2) === charCodes.greaterThan ? 3 : 2;
+    if (input.charCodeAt(state.pos + size) === charCodes.equalsTo) {
+      finishOp(tt.assign, size + 1);
+      return;
+    }
+    finishOp(tt.bitShiftR, size);
+    return;
+  }
+
+  if (nextChar === charCodes.equalsTo) {
+    // >=
+    finishOp(tt.relationalOrEqual, 2);
+  } else {
+    finishOp(tt.greaterThan, 1);
+  }
+}
+
+/**
+ * Reinterpret a possible > token when transitioning from a type to a non-type
+ * context.
+ *
+ * This comes up in two situations where >= needs to be treated as one token:
+ * - After an `as` expression, like in the code `a as T >= 1`.
+ * - In a type argument in an expression context, e.g. `f(a < b, c >= d)`, we
+ *   need to see the token as >= so that we get an error and backtrack to
+ *   normal expression parsing.
+ *
+ * Other situations require >= to be seen as two tokens, e.g.
+ * `const x: Array<T>=[];`, so it's important to treat > as its own token in
+ * typical type parsing situations.
+ */
+export function rescan_gt() {
+  if (state.type === tt.greaterThan) {
+    state.pos -= 1;
+    readToken_gt();
+  }
+}
+
+function readToken_eq_excl(code) {
+  // '=!'
+  const nextChar = input.charCodeAt(state.pos + 1);
+  if (nextChar === charCodes.equalsTo) {
+    finishOp(tt.equality, input.charCodeAt(state.pos + 2) === charCodes.equalsTo ? 3 : 2);
+    return;
+  }
+  if (code === charCodes.equalsTo && nextChar === charCodes.greaterThan) {
+    // '=>'
+    state.pos += 2;
+    finishToken(tt.arrow);
+    return;
+  }
+  finishOp(code === charCodes.equalsTo ? tt.eq : tt.bang, 1);
+}
+
+function readToken_question() {
+  // '?'
+  const nextChar = input.charCodeAt(state.pos + 1);
+  const nextChar2 = input.charCodeAt(state.pos + 2);
+  if (
+    nextChar === charCodes.questionMark &&
+    // In Flow (but not TypeScript), ??string is a valid type that should be
+    // tokenized as two individual ? tokens.
+    !(isFlowEnabled && state.isType)
+  ) {
+    if (nextChar2 === charCodes.equalsTo) {
+      // '??='
+      finishOp(tt.assign, 3);
+    } else {
+      // '??'
+      finishOp(tt.nullishCoalescing, 2);
+    }
+  } else if (
+    nextChar === charCodes.dot &&
+    !(nextChar2 >= charCodes.digit0 && nextChar2 <= charCodes.digit9)
+  ) {
+    // '.' not followed by a number
+    state.pos += 2;
+    finishToken(tt.questionDot);
+  } else {
+    ++state.pos;
+    finishToken(tt.question);
+  }
+}
+
+export function getTokenFromCode(code) {
+  switch (code) {
+    case charCodes.numberSign:
+      ++state.pos;
+      finishToken(tt.hash);
+      return;
+
+    // The interpretation of a dot depends on whether it is followed
+    // by a digit or another two dots.
+
+    case charCodes.dot:
+      readToken_dot();
+      return;
+
+    // Punctuation tokens.
+    case charCodes.leftParenthesis:
+      ++state.pos;
+      finishToken(tt.parenL);
+      return;
+    case charCodes.rightParenthesis:
+      ++state.pos;
+      finishToken(tt.parenR);
+      return;
+    case charCodes.semicolon:
+      ++state.pos;
+      finishToken(tt.semi);
+      return;
+    case charCodes.comma:
+      ++state.pos;
+      finishToken(tt.comma);
+      return;
+    case charCodes.leftSquareBracket:
+      ++state.pos;
+      finishToken(tt.bracketL);
+      return;
+    case charCodes.rightSquareBracket:
+      ++state.pos;
+      finishToken(tt.bracketR);
+      return;
+
+    case charCodes.leftCurlyBrace:
+      if (isFlowEnabled && input.charCodeAt(state.pos + 1) === charCodes.verticalBar) {
+        finishOp(tt.braceBarL, 2);
+      } else {
+        ++state.pos;
+        finishToken(tt.braceL);
+      }
+      return;
+
+    case charCodes.rightCurlyBrace:
+      ++state.pos;
+      finishToken(tt.braceR);
+      return;
+
+    case charCodes.colon:
+      if (input.charCodeAt(state.pos + 1) === charCodes.colon) {
+        finishOp(tt.doubleColon, 2);
+      } else {
+        ++state.pos;
+        finishToken(tt.colon);
+      }
+      return;
+
+    case charCodes.questionMark:
+      readToken_question();
+      return;
+    case charCodes.atSign:
+      ++state.pos;
+      finishToken(tt.at);
+      return;
+
+    case charCodes.graveAccent:
+      ++state.pos;
+      finishToken(tt.backQuote);
+      return;
+
+    case charCodes.digit0: {
+      const nextChar = input.charCodeAt(state.pos + 1);
+      // '0x', '0X', '0o', '0O', '0b', '0B'
+      if (
+        nextChar === charCodes.lowercaseX ||
+        nextChar === charCodes.uppercaseX ||
+        nextChar === charCodes.lowercaseO ||
+        nextChar === charCodes.uppercaseO ||
+        nextChar === charCodes.lowercaseB ||
+        nextChar === charCodes.uppercaseB
+      ) {
+        readRadixNumber();
+        return;
+      }
+    }
+    // Anything else beginning with a digit is an integer, octal
+    // number, or float.
+    case charCodes.digit1:
+    case charCodes.digit2:
+    case charCodes.digit3:
+    case charCodes.digit4:
+    case charCodes.digit5:
+    case charCodes.digit6:
+    case charCodes.digit7:
+    case charCodes.digit8:
+    case charCodes.digit9:
+      readNumber(false);
+      return;
+
+    // Quotes produce strings.
+    case charCodes.quotationMark:
+    case charCodes.apostrophe:
+      readString(code);
+      return;
+
+    // Operators are parsed inline in tiny state machines. '=' (charCodes.equalsTo) is
+    // often referred to. `finishOp` simply skips the amount of
+    // characters it is given as second argument, and returns a token
+    // of the type given by its first argument.
+
+    case charCodes.slash:
+      readToken_slash();
+      return;
+
+    case charCodes.percentSign:
+    case charCodes.asterisk:
+      readToken_mult_modulo(code);
+      return;
+
+    case charCodes.verticalBar:
+    case charCodes.ampersand:
+      readToken_pipe_amp(code);
+      return;
+
+    case charCodes.caret:
+      readToken_caret();
+      return;
+
+    case charCodes.plusSign:
+    case charCodes.dash:
+      readToken_plus_min(code);
+      return;
+
+    case charCodes.lessThan:
+      readToken_lt();
+      return;
+
+    case charCodes.greaterThan:
+      readToken_gt();
+      return;
+
+    case charCodes.equalsTo:
+    case charCodes.exclamationMark:
+      readToken_eq_excl(code);
+      return;
+
+    case charCodes.tilde:
+      finishOp(tt.tilde, 1);
+      return;
+
+    default:
+      break;
+  }
+
+  unexpected(`Unexpected character '${String.fromCharCode(code)}'`, state.pos);
+}
+
+function finishOp(type, size) {
+  state.pos += size;
+  finishToken(type);
+}
+
+function readRegexp() {
+  const start = state.pos;
+  let escaped = false;
+  let inClass = false;
+  for (;;) {
+    if (state.pos >= input.length) {
+      unexpected("Unterminated regular expression", start);
+      return;
+    }
+    const code = input.charCodeAt(state.pos);
+    if (escaped) {
+      escaped = false;
+    } else {
+      if (code === charCodes.leftSquareBracket) {
+        inClass = true;
+      } else if (code === charCodes.rightSquareBracket && inClass) {
+        inClass = false;
+      } else if (code === charCodes.slash && !inClass) {
+        break;
+      }
+      escaped = code === charCodes.backslash;
+    }
+    ++state.pos;
+  }
+  ++state.pos;
+  // Need to use `skipWord` because '\uXXXX' sequences are allowed here (don't ask).
+  skipWord();
+
+  finishToken(tt.regexp);
+}
+
+/**
+ * Read a decimal integer. Note that this can't be unified with the similar code
+ * in readRadixNumber (which also handles hex digits) because "e" needs to be
+ * the end of the integer so that we can properly handle scientific notation.
+ */
+function readInt() {
+  while (true) {
+    const code = input.charCodeAt(state.pos);
+    if ((code >= charCodes.digit0 && code <= charCodes.digit9) || code === charCodes.underscore) {
+      state.pos++;
+    } else {
+      break;
+    }
+  }
+}
+
+function readRadixNumber() {
+  state.pos += 2; // 0x
+
+  // Walk to the end of the number, allowing hex digits.
+  while (true) {
+    const code = input.charCodeAt(state.pos);
+    if (
+      (code >= charCodes.digit0 && code <= charCodes.digit9) ||
+      (code >= charCodes.lowercaseA && code <= charCodes.lowercaseF) ||
+      (code >= charCodes.uppercaseA && code <= charCodes.uppercaseF) ||
+      code === charCodes.underscore
+    ) {
+      state.pos++;
+    } else {
+      break;
+    }
+  }
+
+  const nextChar = input.charCodeAt(state.pos);
+  if (nextChar === charCodes.lowercaseN) {
+    ++state.pos;
+    finishToken(tt.bigint);
+  } else {
+    finishToken(tt.num);
+  }
+}
+
+// Read an integer, octal integer, or floating-point number.
+function readNumber(startsWithDot) {
+  let isBigInt = false;
+  let isDecimal = false;
+
+  if (!startsWithDot) {
+    readInt();
+  }
+
+  let nextChar = input.charCodeAt(state.pos);
+  if (nextChar === charCodes.dot) {
+    ++state.pos;
+    readInt();
+    nextChar = input.charCodeAt(state.pos);
+  }
+
+  if (nextChar === charCodes.uppercaseE || nextChar === charCodes.lowercaseE) {
+    nextChar = input.charCodeAt(++state.pos);
+    if (nextChar === charCodes.plusSign || nextChar === charCodes.dash) {
+      ++state.pos;
+    }
+    readInt();
+    nextChar = input.charCodeAt(state.pos);
+  }
+
+  if (nextChar === charCodes.lowercaseN) {
+    ++state.pos;
+    isBigInt = true;
+  } else if (nextChar === charCodes.lowercaseM) {
+    ++state.pos;
+    isDecimal = true;
+  }
+
+  if (isBigInt) {
+    finishToken(tt.bigint);
+    return;
+  }
+
+  if (isDecimal) {
+    finishToken(tt.decimal);
+    return;
+  }
+
+  finishToken(tt.num);
+}
+
+function readString(quote) {
+  state.pos++;
+  for (;;) {
+    if (state.pos >= input.length) {
+      unexpected("Unterminated string constant");
+      return;
+    }
+    const ch = input.charCodeAt(state.pos);
+    if (ch === charCodes.backslash) {
+      state.pos++;
+    } else if (ch === quote) {
+      break;
+    }
+    state.pos++;
+  }
+  state.pos++;
+  finishToken(tt.string);
+}
+
+// Reads template string tokens.
+function readTmplToken() {
+  for (;;) {
+    if (state.pos >= input.length) {
+      unexpected("Unterminated template");
+      return;
+    }
+    const ch = input.charCodeAt(state.pos);
+    if (
+      ch === charCodes.graveAccent ||
+      (ch === charCodes.dollarSign && input.charCodeAt(state.pos + 1) === charCodes.leftCurlyBrace)
+    ) {
+      if (state.pos === state.start && match(tt.template)) {
+        if (ch === charCodes.dollarSign) {
+          state.pos += 2;
+          finishToken(tt.dollarBraceL);
+          return;
+        } else {
+          ++state.pos;
+          finishToken(tt.backQuote);
+          return;
+        }
+      }
+      finishToken(tt.template);
+      return;
+    }
+    if (ch === charCodes.backslash) {
+      state.pos++;
+    }
+    state.pos++;
+  }
+}
+
+// Skip to the end of the current word. Note that this is the same as the snippet at the end of
+// readWord, but calling skipWord from readWord seems to slightly hurt performance from some rough
+// measurements.
+export function skipWord() {
+  while (state.pos < input.length) {
+    const ch = input.charCodeAt(state.pos);
+    if (IS_IDENTIFIER_CHAR[ch]) {
+      state.pos++;
+    } else if (ch === charCodes.backslash) {
+      // \u
+      state.pos += 2;
+      if (input.charCodeAt(state.pos) === charCodes.leftCurlyBrace) {
+        while (
+          state.pos < input.length &&
+          input.charCodeAt(state.pos) !== charCodes.rightCurlyBrace
+        ) {
+          state.pos++;
+        }
+        state.pos++;
+      }
+    } else {
+      break;
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/keywords.js b/node_modules/sucrase/dist/esm/parser/tokenizer/keywords.js
new file mode 100644
index 0000000..0dcf1b0
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/keywords.js
@@ -0,0 +1,43 @@
+export var ContextualKeyword; (function (ContextualKeyword) {
+  const NONE = 0; ContextualKeyword[ContextualKeyword["NONE"] = NONE] = "NONE";
+  const _abstract = NONE + 1; ContextualKeyword[ContextualKeyword["_abstract"] = _abstract] = "_abstract";
+  const _accessor = _abstract + 1; ContextualKeyword[ContextualKeyword["_accessor"] = _accessor] = "_accessor";
+  const _as = _accessor + 1; ContextualKeyword[ContextualKeyword["_as"] = _as] = "_as";
+  const _assert = _as + 1; ContextualKeyword[ContextualKeyword["_assert"] = _assert] = "_assert";
+  const _asserts = _assert + 1; ContextualKeyword[ContextualKeyword["_asserts"] = _asserts] = "_asserts";
+  const _async = _asserts + 1; ContextualKeyword[ContextualKeyword["_async"] = _async] = "_async";
+  const _await = _async + 1; ContextualKeyword[ContextualKeyword["_await"] = _await] = "_await";
+  const _checks = _await + 1; ContextualKeyword[ContextualKeyword["_checks"] = _checks] = "_checks";
+  const _constructor = _checks + 1; ContextualKeyword[ContextualKeyword["_constructor"] = _constructor] = "_constructor";
+  const _declare = _constructor + 1; ContextualKeyword[ContextualKeyword["_declare"] = _declare] = "_declare";
+  const _enum = _declare + 1; ContextualKeyword[ContextualKeyword["_enum"] = _enum] = "_enum";
+  const _exports = _enum + 1; ContextualKeyword[ContextualKeyword["_exports"] = _exports] = "_exports";
+  const _from = _exports + 1; ContextualKeyword[ContextualKeyword["_from"] = _from] = "_from";
+  const _get = _from + 1; ContextualKeyword[ContextualKeyword["_get"] = _get] = "_get";
+  const _global = _get + 1; ContextualKeyword[ContextualKeyword["_global"] = _global] = "_global";
+  const _implements = _global + 1; ContextualKeyword[ContextualKeyword["_implements"] = _implements] = "_implements";
+  const _infer = _implements + 1; ContextualKeyword[ContextualKeyword["_infer"] = _infer] = "_infer";
+  const _interface = _infer + 1; ContextualKeyword[ContextualKeyword["_interface"] = _interface] = "_interface";
+  const _is = _interface + 1; ContextualKeyword[ContextualKeyword["_is"] = _is] = "_is";
+  const _keyof = _is + 1; ContextualKeyword[ContextualKeyword["_keyof"] = _keyof] = "_keyof";
+  const _mixins = _keyof + 1; ContextualKeyword[ContextualKeyword["_mixins"] = _mixins] = "_mixins";
+  const _module = _mixins + 1; ContextualKeyword[ContextualKeyword["_module"] = _module] = "_module";
+  const _namespace = _module + 1; ContextualKeyword[ContextualKeyword["_namespace"] = _namespace] = "_namespace";
+  const _of = _namespace + 1; ContextualKeyword[ContextualKeyword["_of"] = _of] = "_of";
+  const _opaque = _of + 1; ContextualKeyword[ContextualKeyword["_opaque"] = _opaque] = "_opaque";
+  const _out = _opaque + 1; ContextualKeyword[ContextualKeyword["_out"] = _out] = "_out";
+  const _override = _out + 1; ContextualKeyword[ContextualKeyword["_override"] = _override] = "_override";
+  const _private = _override + 1; ContextualKeyword[ContextualKeyword["_private"] = _private] = "_private";
+  const _protected = _private + 1; ContextualKeyword[ContextualKeyword["_protected"] = _protected] = "_protected";
+  const _proto = _protected + 1; ContextualKeyword[ContextualKeyword["_proto"] = _proto] = "_proto";
+  const _public = _proto + 1; ContextualKeyword[ContextualKeyword["_public"] = _public] = "_public";
+  const _readonly = _public + 1; ContextualKeyword[ContextualKeyword["_readonly"] = _readonly] = "_readonly";
+  const _require = _readonly + 1; ContextualKeyword[ContextualKeyword["_require"] = _require] = "_require";
+  const _satisfies = _require + 1; ContextualKeyword[ContextualKeyword["_satisfies"] = _satisfies] = "_satisfies";
+  const _set = _satisfies + 1; ContextualKeyword[ContextualKeyword["_set"] = _set] = "_set";
+  const _static = _set + 1; ContextualKeyword[ContextualKeyword["_static"] = _static] = "_static";
+  const _symbol = _static + 1; ContextualKeyword[ContextualKeyword["_symbol"] = _symbol] = "_symbol";
+  const _type = _symbol + 1; ContextualKeyword[ContextualKeyword["_type"] = _type] = "_type";
+  const _unique = _type + 1; ContextualKeyword[ContextualKeyword["_unique"] = _unique] = "_unique";
+  const _using = _unique + 1; ContextualKeyword[ContextualKeyword["_using"] = _using] = "_using";
+})(ContextualKeyword || (ContextualKeyword = {}));
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/readWord.js b/node_modules/sucrase/dist/esm/parser/tokenizer/readWord.js
new file mode 100644
index 0000000..cf3df89
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/readWord.js
@@ -0,0 +1,64 @@
+import {input, state} from "../traverser/base";
+import {charCodes} from "../util/charcodes";
+import {IS_IDENTIFIER_CHAR} from "../util/identifier";
+import {finishToken} from "./index";
+import {READ_WORD_TREE} from "./readWordTree";
+import {TokenType as tt} from "./types";
+
+/**
+ * Read an identifier, producing either a name token or matching on one of the existing keywords.
+ * For performance, we pre-generate big decision tree that we traverse. Each node represents a
+ * prefix and has 27 values, where the first value is the token or contextual token, if any (-1 if
+ * not), and the other 26 values are the transitions to other nodes, or -1 to stop.
+ */
+export default function readWord() {
+  let treePos = 0;
+  let code = 0;
+  let pos = state.pos;
+  while (pos < input.length) {
+    code = input.charCodeAt(pos);
+    if (code < charCodes.lowercaseA || code > charCodes.lowercaseZ) {
+      break;
+    }
+    const next = READ_WORD_TREE[treePos + (code - charCodes.lowercaseA) + 1];
+    if (next === -1) {
+      break;
+    } else {
+      treePos = next;
+      pos++;
+    }
+  }
+
+  const keywordValue = READ_WORD_TREE[treePos];
+  if (keywordValue > -1 && !IS_IDENTIFIER_CHAR[code]) {
+    state.pos = pos;
+    if (keywordValue & 1) {
+      finishToken(keywordValue >>> 1);
+    } else {
+      finishToken(tt.name, keywordValue >>> 1);
+    }
+    return;
+  }
+
+  while (pos < input.length) {
+    const ch = input.charCodeAt(pos);
+    if (IS_IDENTIFIER_CHAR[ch]) {
+      pos++;
+    } else if (ch === charCodes.backslash) {
+      // \u
+      pos += 2;
+      if (input.charCodeAt(pos) === charCodes.leftCurlyBrace) {
+        while (pos < input.length && input.charCodeAt(pos) !== charCodes.rightCurlyBrace) {
+          pos++;
+        }
+        pos++;
+      }
+    } else if (ch === charCodes.atSign && input.charCodeAt(pos + 1) === charCodes.atSign) {
+      pos += 2;
+    } else {
+      break;
+    }
+  }
+  state.pos = pos;
+  finishToken(tt.name);
+}
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/readWordTree.js b/node_modules/sucrase/dist/esm/parser/tokenizer/readWordTree.js
new file mode 100644
index 0000000..ffb8cac
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/readWordTree.js
@@ -0,0 +1,671 @@
+// Generated file, do not edit! Run "yarn generate" to re-generate this file.
+import {ContextualKeyword} from "./keywords";
+import {TokenType as tt} from "./types";
+
+// prettier-ignore
+export const READ_WORD_TREE = new Int32Array([
+  // ""
+  -1, 27, 783, 918, 1755, 2376, 2862, 3483, -1, 3699, -1, 4617, 4752, 4833, 5130, 5508, 5940, -1, 6480, 6939, 7749, 8181, 8451, 8613, -1, 8829, -1,
+  // "a"
+  -1, -1, 54, 243, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 432, -1, -1, -1, 675, -1, -1, -1,
+  // "ab"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 81, -1, -1, -1, -1, -1, -1, -1,
+  // "abs"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 108, -1, -1, -1, -1, -1, -1,
+  // "abst"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 135, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "abstr"
+  -1, 162, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "abstra"
+  -1, -1, -1, 189, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "abstrac"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 216, -1, -1, -1, -1, -1, -1,
+  // "abstract"
+  ContextualKeyword._abstract << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ac"
+  -1, -1, -1, 270, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "acc"
+  -1, -1, -1, -1, -1, 297, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "acce"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 324, -1, -1, -1, -1, -1, -1, -1,
+  // "acces"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 351, -1, -1, -1, -1, -1, -1, -1,
+  // "access"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 378, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "accesso"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 405, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "accessor"
+  ContextualKeyword._accessor << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "as"
+  ContextualKeyword._as << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 459, -1, -1, -1, -1, -1, 594, -1,
+  // "ass"
+  -1, -1, -1, -1, -1, 486, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "asse"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 513, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "asser"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 540, -1, -1, -1, -1, -1, -1,
+  // "assert"
+  ContextualKeyword._assert << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 567, -1, -1, -1, -1, -1, -1, -1,
+  // "asserts"
+  ContextualKeyword._asserts << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "asy"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 621, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "asyn"
+  -1, -1, -1, 648, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "async"
+  ContextualKeyword._async << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "aw"
+  -1, 702, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "awa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 729, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "awai"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 756, -1, -1, -1, -1, -1, -1,
+  // "await"
+  ContextualKeyword._await << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "b"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 810, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "br"
+  -1, -1, -1, -1, -1, 837, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "bre"
+  -1, 864, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "brea"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 891, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "break"
+  (tt._break << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "c"
+  -1, 945, -1, -1, -1, -1, -1, -1, 1107, -1, -1, -1, 1242, -1, -1, 1350, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ca"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 972, 1026, -1, -1, -1, -1, -1, -1,
+  // "cas"
+  -1, -1, -1, -1, -1, 999, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "case"
+  (tt._case << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "cat"
+  -1, -1, -1, 1053, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "catc"
+  -1, -1, -1, -1, -1, -1, -1, -1, 1080, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "catch"
+  (tt._catch << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ch"
+  -1, -1, -1, -1, -1, 1134, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "che"
+  -1, -1, -1, 1161, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "chec"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1188, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "check"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1215, -1, -1, -1, -1, -1, -1, -1,
+  // "checks"
+  ContextualKeyword._checks << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "cl"
+  -1, 1269, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "cla"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1296, -1, -1, -1, -1, -1, -1, -1,
+  // "clas"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1323, -1, -1, -1, -1, -1, -1, -1,
+  // "class"
+  (tt._class << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "co"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1377, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "con"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1404, 1620, -1, -1, -1, -1, -1, -1,
+  // "cons"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1431, -1, -1, -1, -1, -1, -1,
+  // "const"
+  (tt._const << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1458, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "constr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1485, -1, -1, -1, -1, -1,
+  // "constru"
+  -1, -1, -1, 1512, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "construc"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1539, -1, -1, -1, -1, -1, -1,
+  // "construct"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1566, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "constructo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1593, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "constructor"
+  ContextualKeyword._constructor << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "cont"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 1647, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "conti"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1674, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "contin"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1701, -1, -1, -1, -1, -1,
+  // "continu"
+  -1, -1, -1, -1, -1, 1728, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "continue"
+  (tt._continue << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "d"
+  -1, -1, -1, -1, -1, 1782, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2349, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "de"
+  -1, -1, 1809, 1971, -1, -1, 2106, -1, -1, -1, -1, -1, 2241, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "deb"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1836, -1, -1, -1, -1, -1,
+  // "debu"
+  -1, -1, -1, -1, -1, -1, -1, 1863, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "debug"
+  -1, -1, -1, -1, -1, -1, -1, 1890, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "debugg"
+  -1, -1, -1, -1, -1, 1917, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "debugge"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1944, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "debugger"
+  (tt._debugger << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "dec"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1998, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "decl"
+  -1, 2025, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "decla"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2052, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "declar"
+  -1, -1, -1, -1, -1, 2079, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "declare"
+  ContextualKeyword._declare << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "def"
+  -1, 2133, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "defa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2160, -1, -1, -1, -1, -1,
+  // "defau"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2187, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "defaul"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2214, -1, -1, -1, -1, -1, -1,
+  // "default"
+  (tt._default << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "del"
+  -1, -1, -1, -1, -1, 2268, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "dele"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2295, -1, -1, -1, -1, -1, -1,
+  // "delet"
+  -1, -1, -1, -1, -1, 2322, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "delete"
+  (tt._delete << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "do"
+  (tt._do << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "e"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2403, -1, 2484, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2565, -1, -1,
+  // "el"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2430, -1, -1, -1, -1, -1, -1, -1,
+  // "els"
+  -1, -1, -1, -1, -1, 2457, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "else"
+  (tt._else << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "en"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2511, -1, -1, -1, -1, -1,
+  // "enu"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2538, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "enum"
+  ContextualKeyword._enum << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ex"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2592, -1, -1, -1, 2727, -1, -1, -1, -1, -1, -1,
+  // "exp"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2619, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "expo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2646, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "expor"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2673, -1, -1, -1, -1, -1, -1,
+  // "export"
+  (tt._export << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2700, -1, -1, -1, -1, -1, -1, -1,
+  // "exports"
+  ContextualKeyword._exports << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ext"
+  -1, -1, -1, -1, -1, 2754, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "exte"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2781, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "exten"
+  -1, -1, -1, -1, 2808, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "extend"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2835, -1, -1, -1, -1, -1, -1, -1,
+  // "extends"
+  (tt._extends << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "f"
+  -1, 2889, -1, -1, -1, -1, -1, -1, -1, 2997, -1, -1, -1, -1, -1, 3159, -1, -1, 3213, -1, -1, 3294, -1, -1, -1, -1, -1,
+  // "fa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2916, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fal"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 2943, -1, -1, -1, -1, -1, -1, -1,
+  // "fals"
+  -1, -1, -1, -1, -1, 2970, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "false"
+  (tt._false << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3024, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fin"
+  -1, 3051, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fina"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3078, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "final"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3105, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "finall"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3132, -1,
+  // "finally"
+  (tt._finally << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3186, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "for"
+  (tt._for << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3240, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fro"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3267, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "from"
+  ContextualKeyword._from << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fu"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3321, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "fun"
+  -1, -1, -1, 3348, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "func"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3375, -1, -1, -1, -1, -1, -1,
+  // "funct"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 3402, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "functi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3429, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "functio"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3456, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "function"
+  (tt._function << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "g"
+  -1, -1, -1, -1, -1, 3510, -1, -1, -1, -1, -1, -1, 3564, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ge"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3537, -1, -1, -1, -1, -1, -1,
+  // "get"
+  ContextualKeyword._get << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "gl"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3591, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "glo"
+  -1, -1, 3618, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "glob"
+  -1, 3645, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "globa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3672, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "global"
+  ContextualKeyword._global << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "i"
+  -1, -1, -1, -1, -1, -1, 3726, -1, -1, -1, -1, -1, -1, 3753, 4077, -1, -1, -1, -1, 4590, -1, -1, -1, -1, -1, -1, -1,
+  // "if"
+  (tt._if << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "im"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3780, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "imp"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3807, -1, -1, 3996, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "impl"
+  -1, -1, -1, -1, -1, 3834, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "imple"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3861, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "implem"
+  -1, -1, -1, -1, -1, 3888, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "impleme"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3915, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "implemen"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3942, -1, -1, -1, -1, -1, -1,
+  // "implement"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3969, -1, -1, -1, -1, -1, -1, -1,
+  // "implements"
+  ContextualKeyword._implements << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "impo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4023, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "impor"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4050, -1, -1, -1, -1, -1, -1,
+  // "import"
+  (tt._import << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "in"
+  (tt._in << 1) + 1, -1, -1, -1, -1, -1, 4104, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4185, 4401, -1, -1, -1, -1, -1, -1,
+  // "inf"
+  -1, -1, -1, -1, -1, 4131, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "infe"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4158, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "infer"
+  ContextualKeyword._infer << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ins"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4212, -1, -1, -1, -1, -1, -1,
+  // "inst"
+  -1, 4239, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "insta"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4266, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "instan"
+  -1, -1, -1, 4293, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "instanc"
+  -1, -1, -1, -1, -1, 4320, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "instance"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4347, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "instanceo"
+  -1, -1, -1, -1, -1, -1, 4374, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "instanceof"
+  (tt._instanceof << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "int"
+  -1, -1, -1, -1, -1, 4428, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "inte"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4455, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "inter"
+  -1, -1, -1, -1, -1, -1, 4482, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "interf"
+  -1, 4509, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "interfa"
+  -1, -1, -1, 4536, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "interfac"
+  -1, -1, -1, -1, -1, 4563, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "interface"
+  ContextualKeyword._interface << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "is"
+  ContextualKeyword._is << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "k"
+  -1, -1, -1, -1, -1, 4644, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ke"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4671, -1,
+  // "key"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4698, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "keyo"
+  -1, -1, -1, -1, -1, -1, 4725, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "keyof"
+  ContextualKeyword._keyof << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "l"
+  -1, -1, -1, -1, -1, 4779, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "le"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4806, -1, -1, -1, -1, -1, -1,
+  // "let"
+  (tt._let << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "m"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 4860, -1, -1, -1, -1, -1, 4995, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "mi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4887, -1, -1,
+  // "mix"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 4914, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "mixi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4941, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "mixin"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4968, -1, -1, -1, -1, -1, -1, -1,
+  // "mixins"
+  ContextualKeyword._mixins << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "mo"
+  -1, -1, -1, -1, 5022, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "mod"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5049, -1, -1, -1, -1, -1,
+  // "modu"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5076, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "modul"
+  -1, -1, -1, -1, -1, 5103, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "module"
+  ContextualKeyword._module << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "n"
+  -1, 5157, -1, -1, -1, 5373, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5427, -1, -1, -1, -1, -1,
+  // "na"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5184, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "nam"
+  -1, -1, -1, -1, -1, 5211, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "name"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5238, -1, -1, -1, -1, -1, -1, -1,
+  // "names"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5265, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "namesp"
+  -1, 5292, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "namespa"
+  -1, -1, -1, 5319, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "namespac"
+  -1, -1, -1, -1, -1, 5346, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "namespace"
+  ContextualKeyword._namespace << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ne"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5400, -1, -1, -1,
+  // "new"
+  (tt._new << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "nu"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5454, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "nul"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5481, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "null"
+  (tt._null << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "o"
+  -1, -1, -1, -1, -1, -1, 5535, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5562, -1, -1, -1, -1, 5697, 5751, -1, -1, -1, -1,
+  // "of"
+  ContextualKeyword._of << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "op"
+  -1, 5589, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "opa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5616, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "opaq"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5643, -1, -1, -1, -1, -1,
+  // "opaqu"
+  -1, -1, -1, -1, -1, 5670, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "opaque"
+  ContextualKeyword._opaque << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ou"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5724, -1, -1, -1, -1, -1, -1,
+  // "out"
+  ContextualKeyword._out << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ov"
+  -1, -1, -1, -1, -1, 5778, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ove"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5805, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "over"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5832, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "overr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 5859, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "overri"
+  -1, -1, -1, -1, 5886, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "overrid"
+  -1, -1, -1, -1, -1, 5913, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "override"
+  ContextualKeyword._override << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "p"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5967, -1, -1, 6345, -1, -1, -1, -1, -1,
+  // "pr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 5994, -1, -1, -1, -1, -1, 6129, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "pri"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6021, -1, -1, -1, -1,
+  // "priv"
+  -1, 6048, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "priva"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6075, -1, -1, -1, -1, -1, -1,
+  // "privat"
+  -1, -1, -1, -1, -1, 6102, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "private"
+  ContextualKeyword._private << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "pro"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6156, -1, -1, -1, -1, -1, -1,
+  // "prot"
+  -1, -1, -1, -1, -1, 6183, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6318, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "prote"
+  -1, -1, -1, 6210, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "protec"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6237, -1, -1, -1, -1, -1, -1,
+  // "protect"
+  -1, -1, -1, -1, -1, 6264, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "protecte"
+  -1, -1, -1, -1, 6291, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "protected"
+  ContextualKeyword._protected << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "proto"
+  ContextualKeyword._proto << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "pu"
+  -1, -1, 6372, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "pub"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6399, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "publ"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 6426, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "publi"
+  -1, -1, -1, 6453, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "public"
+  ContextualKeyword._public << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "r"
+  -1, -1, -1, -1, -1, 6507, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "re"
+  -1, 6534, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6696, -1, -1, 6831, -1, -1, -1, -1, -1, -1,
+  // "rea"
+  -1, -1, -1, -1, 6561, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "read"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6588, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "reado"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6615, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "readon"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6642, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "readonl"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6669, -1,
+  // "readonly"
+  ContextualKeyword._readonly << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "req"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6723, -1, -1, -1, -1, -1,
+  // "requ"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 6750, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "requi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6777, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "requir"
+  -1, -1, -1, -1, -1, 6804, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "require"
+  ContextualKeyword._require << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ret"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6858, -1, -1, -1, -1, -1,
+  // "retu"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6885, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "retur"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6912, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "return"
+  (tt._return << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "s"
+  -1, 6966, -1, -1, -1, 7182, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7236, 7371, -1, 7479, -1, 7614, -1,
+  // "sa"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 6993, -1, -1, -1, -1, -1, -1,
+  // "sat"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 7020, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sati"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7047, -1, -1, -1, -1, -1, -1, -1,
+  // "satis"
+  -1, -1, -1, -1, -1, -1, 7074, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "satisf"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 7101, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "satisfi"
+  -1, -1, -1, -1, -1, 7128, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "satisfie"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7155, -1, -1, -1, -1, -1, -1, -1,
+  // "satisfies"
+  ContextualKeyword._satisfies << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "se"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7209, -1, -1, -1, -1, -1, -1,
+  // "set"
+  ContextualKeyword._set << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "st"
+  -1, 7263, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sta"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7290, -1, -1, -1, -1, -1, -1,
+  // "stat"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 7317, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "stati"
+  -1, -1, -1, 7344, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "static"
+  ContextualKeyword._static << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "su"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7398, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sup"
+  -1, -1, -1, -1, -1, 7425, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "supe"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7452, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "super"
+  (tt._super << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sw"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 7506, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "swi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7533, -1, -1, -1, -1, -1, -1,
+  // "swit"
+  -1, -1, -1, 7560, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "switc"
+  -1, -1, -1, -1, -1, -1, -1, -1, 7587, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "switch"
+  (tt._switch << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sy"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7641, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "sym"
+  -1, -1, 7668, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "symb"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7695, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "symbo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7722, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "symbol"
+  ContextualKeyword._symbol << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "t"
+  -1, -1, -1, -1, -1, -1, -1, -1, 7776, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7938, -1, -1, -1, -1, -1, -1, 8046, -1,
+  // "th"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 7803, -1, -1, -1, -1, -1, -1, -1, -1, 7857, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "thi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7830, -1, -1, -1, -1, -1, -1, -1,
+  // "this"
+  (tt._this << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "thr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7884, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "thro"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7911, -1, -1, -1,
+  // "throw"
+  (tt._throw << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "tr"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7965, -1, -1, -1, 8019, -1,
+  // "tru"
+  -1, -1, -1, -1, -1, 7992, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "true"
+  (tt._true << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "try"
+  (tt._try << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "ty"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8073, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "typ"
+  -1, -1, -1, -1, -1, 8100, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "type"
+  ContextualKeyword._type << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8127, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "typeo"
+  -1, -1, -1, -1, -1, -1, 8154, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "typeof"
+  (tt._typeof << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "u"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8208, -1, -1, -1, -1, 8343, -1, -1, -1, -1, -1, -1, -1,
+  // "un"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8235, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "uni"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8262, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "uniq"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8289, -1, -1, -1, -1, -1,
+  // "uniqu"
+  -1, -1, -1, -1, -1, 8316, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "unique"
+  ContextualKeyword._unique << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "us"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8370, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8397, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usin"
+  -1, -1, -1, -1, -1, -1, -1, 8424, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "using"
+  ContextualKeyword._using << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "v"
+  -1, 8478, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8532, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "va"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8505, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "var"
+  (tt._var << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "vo"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8559, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "voi"
+  -1, -1, -1, -1, 8586, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "void"
+  (tt._void << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "w"
+  -1, -1, -1, -1, -1, -1, -1, -1, 8640, 8748, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "wh"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8667, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "whi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8694, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "whil"
+  -1, -1, -1, -1, -1, 8721, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "while"
+  (tt._while << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "wi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8775, -1, -1, -1, -1, -1, -1,
+  // "wit"
+  -1, -1, -1, -1, -1, -1, -1, -1, 8802, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "with"
+  (tt._with << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "y"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8856, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "yi"
+  -1, -1, -1, -1, -1, 8883, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "yie"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8910, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "yiel"
+  -1, -1, -1, -1, 8937, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "yield"
+  (tt._yield << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+]);
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/state.js b/node_modules/sucrase/dist/esm/parser/tokenizer/state.js
new file mode 100644
index 0000000..940cde0
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/state.js
@@ -0,0 +1,106 @@
+
+import {ContextualKeyword} from "./keywords";
+import { TokenType as tt} from "./types";
+
+export class Scope {
+  
+  
+  
+
+  constructor(startTokenIndex, endTokenIndex, isFunctionScope) {
+    this.startTokenIndex = startTokenIndex;
+    this.endTokenIndex = endTokenIndex;
+    this.isFunctionScope = isFunctionScope;
+  }
+}
+
+export class StateSnapshot {
+  constructor(
+     potentialArrowAt,
+     noAnonFunctionType,
+     inDisallowConditionalTypesContext,
+     tokensLength,
+     scopesLength,
+     pos,
+     type,
+     contextualKeyword,
+     start,
+     end,
+     isType,
+     scopeDepth,
+     error,
+  ) {;this.potentialArrowAt = potentialArrowAt;this.noAnonFunctionType = noAnonFunctionType;this.inDisallowConditionalTypesContext = inDisallowConditionalTypesContext;this.tokensLength = tokensLength;this.scopesLength = scopesLength;this.pos = pos;this.type = type;this.contextualKeyword = contextualKeyword;this.start = start;this.end = end;this.isType = isType;this.scopeDepth = scopeDepth;this.error = error;}
+}
+
+export default class State {constructor() { State.prototype.__init.call(this);State.prototype.__init2.call(this);State.prototype.__init3.call(this);State.prototype.__init4.call(this);State.prototype.__init5.call(this);State.prototype.__init6.call(this);State.prototype.__init7.call(this);State.prototype.__init8.call(this);State.prototype.__init9.call(this);State.prototype.__init10.call(this);State.prototype.__init11.call(this);State.prototype.__init12.call(this);State.prototype.__init13.call(this); }
+  // Used to signify the start of a potential arrow function
+  __init() {this.potentialArrowAt = -1}
+
+  // Used by Flow to handle an edge case involving function type parsing.
+  __init2() {this.noAnonFunctionType = false}
+
+  // Used by TypeScript to handle ambiguities when parsing conditional types.
+  __init3() {this.inDisallowConditionalTypesContext = false}
+
+  // Token store.
+  __init4() {this.tokens = []}
+
+  // Array of all observed scopes, ordered by their ending position.
+  __init5() {this.scopes = []}
+
+  // The current position of the tokenizer in the input.
+  __init6() {this.pos = 0}
+
+  // Information about the current token.
+  __init7() {this.type = tt.eof}
+  __init8() {this.contextualKeyword = ContextualKeyword.NONE}
+  __init9() {this.start = 0}
+  __init10() {this.end = 0}
+
+  __init11() {this.isType = false}
+  __init12() {this.scopeDepth = 0}
+
+  /**
+   * If the parser is in an error state, then the token is always tt.eof and all functions can
+   * keep executing but should be written so they don't get into an infinite loop in this situation.
+   *
+   * This approach, combined with the ability to snapshot and restore state, allows us to implement
+   * backtracking without exceptions and without needing to explicitly propagate error states
+   * everywhere.
+   */
+  __init13() {this.error = null}
+
+  snapshot() {
+    return new StateSnapshot(
+      this.potentialArrowAt,
+      this.noAnonFunctionType,
+      this.inDisallowConditionalTypesContext,
+      this.tokens.length,
+      this.scopes.length,
+      this.pos,
+      this.type,
+      this.contextualKeyword,
+      this.start,
+      this.end,
+      this.isType,
+      this.scopeDepth,
+      this.error,
+    );
+  }
+
+  restoreFromSnapshot(snapshot) {
+    this.potentialArrowAt = snapshot.potentialArrowAt;
+    this.noAnonFunctionType = snapshot.noAnonFunctionType;
+    this.inDisallowConditionalTypesContext = snapshot.inDisallowConditionalTypesContext;
+    this.tokens.length = snapshot.tokensLength;
+    this.scopes.length = snapshot.scopesLength;
+    this.pos = snapshot.pos;
+    this.type = snapshot.type;
+    this.contextualKeyword = snapshot.contextualKeyword;
+    this.start = snapshot.start;
+    this.end = snapshot.end;
+    this.isType = snapshot.isType;
+    this.scopeDepth = snapshot.scopeDepth;
+    this.error = snapshot.error;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/tokenizer/types.js b/node_modules/sucrase/dist/esm/parser/tokenizer/types.js
new file mode 100644
index 0000000..9746ad6
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/tokenizer/types.js
@@ -0,0 +1,361 @@
+// Generated file, do not edit! Run "yarn generate" to re-generate this file.
+/* istanbul ignore file */
+/**
+ * Enum of all token types, with bit fields to signify meaningful properties.
+ */
+export var TokenType; (function (TokenType) {
+  // Precedence 0 means not an operator; otherwise it is a positive number up to 12.
+  const PRECEDENCE_MASK = 0xf; TokenType[TokenType["PRECEDENCE_MASK"] = PRECEDENCE_MASK] = "PRECEDENCE_MASK";
+  const IS_KEYWORD = 1 << 4; TokenType[TokenType["IS_KEYWORD"] = IS_KEYWORD] = "IS_KEYWORD";
+  const IS_ASSIGN = 1 << 5; TokenType[TokenType["IS_ASSIGN"] = IS_ASSIGN] = "IS_ASSIGN";
+  const IS_RIGHT_ASSOCIATIVE = 1 << 6; TokenType[TokenType["IS_RIGHT_ASSOCIATIVE"] = IS_RIGHT_ASSOCIATIVE] = "IS_RIGHT_ASSOCIATIVE";
+  const IS_PREFIX = 1 << 7; TokenType[TokenType["IS_PREFIX"] = IS_PREFIX] = "IS_PREFIX";
+  const IS_POSTFIX = 1 << 8; TokenType[TokenType["IS_POSTFIX"] = IS_POSTFIX] = "IS_POSTFIX";
+  const IS_EXPRESSION_START = 1 << 9; TokenType[TokenType["IS_EXPRESSION_START"] = IS_EXPRESSION_START] = "IS_EXPRESSION_START";
+
+  const num = 512; TokenType[TokenType["num"] = num] = "num"; // num startsExpr
+  const bigint = 1536; TokenType[TokenType["bigint"] = bigint] = "bigint"; // bigint startsExpr
+  const decimal = 2560; TokenType[TokenType["decimal"] = decimal] = "decimal"; // decimal startsExpr
+  const regexp = 3584; TokenType[TokenType["regexp"] = regexp] = "regexp"; // regexp startsExpr
+  const string = 4608; TokenType[TokenType["string"] = string] = "string"; // string startsExpr
+  const name = 5632; TokenType[TokenType["name"] = name] = "name"; // name startsExpr
+  const eof = 6144; TokenType[TokenType["eof"] = eof] = "eof"; // eof
+  const bracketL = 7680; TokenType[TokenType["bracketL"] = bracketL] = "bracketL"; // [ startsExpr
+  const bracketR = 8192; TokenType[TokenType["bracketR"] = bracketR] = "bracketR"; // ]
+  const braceL = 9728; TokenType[TokenType["braceL"] = braceL] = "braceL"; // { startsExpr
+  const braceBarL = 10752; TokenType[TokenType["braceBarL"] = braceBarL] = "braceBarL"; // {| startsExpr
+  const braceR = 11264; TokenType[TokenType["braceR"] = braceR] = "braceR"; // }
+  const braceBarR = 12288; TokenType[TokenType["braceBarR"] = braceBarR] = "braceBarR"; // |}
+  const parenL = 13824; TokenType[TokenType["parenL"] = parenL] = "parenL"; // ( startsExpr
+  const parenR = 14336; TokenType[TokenType["parenR"] = parenR] = "parenR"; // )
+  const comma = 15360; TokenType[TokenType["comma"] = comma] = "comma"; // ,
+  const semi = 16384; TokenType[TokenType["semi"] = semi] = "semi"; // ;
+  const colon = 17408; TokenType[TokenType["colon"] = colon] = "colon"; // :
+  const doubleColon = 18432; TokenType[TokenType["doubleColon"] = doubleColon] = "doubleColon"; // ::
+  const dot = 19456; TokenType[TokenType["dot"] = dot] = "dot"; // .
+  const question = 20480; TokenType[TokenType["question"] = question] = "question"; // ?
+  const questionDot = 21504; TokenType[TokenType["questionDot"] = questionDot] = "questionDot"; // ?.
+  const arrow = 22528; TokenType[TokenType["arrow"] = arrow] = "arrow"; // =>
+  const template = 23552; TokenType[TokenType["template"] = template] = "template"; // template
+  const ellipsis = 24576; TokenType[TokenType["ellipsis"] = ellipsis] = "ellipsis"; // ...
+  const backQuote = 25600; TokenType[TokenType["backQuote"] = backQuote] = "backQuote"; // `
+  const dollarBraceL = 27136; TokenType[TokenType["dollarBraceL"] = dollarBraceL] = "dollarBraceL"; // ${ startsExpr
+  const at = 27648; TokenType[TokenType["at"] = at] = "at"; // @
+  const hash = 29184; TokenType[TokenType["hash"] = hash] = "hash"; // # startsExpr
+  const eq = 29728; TokenType[TokenType["eq"] = eq] = "eq"; // = isAssign
+  const assign = 30752; TokenType[TokenType["assign"] = assign] = "assign"; // _= isAssign
+  const preIncDec = 32640; TokenType[TokenType["preIncDec"] = preIncDec] = "preIncDec"; // ++/-- prefix postfix startsExpr
+  const postIncDec = 33664; TokenType[TokenType["postIncDec"] = postIncDec] = "postIncDec"; // ++/-- prefix postfix startsExpr
+  const bang = 34432; TokenType[TokenType["bang"] = bang] = "bang"; // ! prefix startsExpr
+  const tilde = 35456; TokenType[TokenType["tilde"] = tilde] = "tilde"; // ~ prefix startsExpr
+  const pipeline = 35841; TokenType[TokenType["pipeline"] = pipeline] = "pipeline"; // |> prec:1
+  const nullishCoalescing = 36866; TokenType[TokenType["nullishCoalescing"] = nullishCoalescing] = "nullishCoalescing"; // ?? prec:2
+  const logicalOR = 37890; TokenType[TokenType["logicalOR"] = logicalOR] = "logicalOR"; // || prec:2
+  const logicalAND = 38915; TokenType[TokenType["logicalAND"] = logicalAND] = "logicalAND"; // && prec:3
+  const bitwiseOR = 39940; TokenType[TokenType["bitwiseOR"] = bitwiseOR] = "bitwiseOR"; // | prec:4
+  const bitwiseXOR = 40965; TokenType[TokenType["bitwiseXOR"] = bitwiseXOR] = "bitwiseXOR"; // ^ prec:5
+  const bitwiseAND = 41990; TokenType[TokenType["bitwiseAND"] = bitwiseAND] = "bitwiseAND"; // & prec:6
+  const equality = 43015; TokenType[TokenType["equality"] = equality] = "equality"; // ==/!= prec:7
+  const lessThan = 44040; TokenType[TokenType["lessThan"] = lessThan] = "lessThan"; // < prec:8
+  const greaterThan = 45064; TokenType[TokenType["greaterThan"] = greaterThan] = "greaterThan"; // > prec:8
+  const relationalOrEqual = 46088; TokenType[TokenType["relationalOrEqual"] = relationalOrEqual] = "relationalOrEqual"; // <=/>= prec:8
+  const bitShiftL = 47113; TokenType[TokenType["bitShiftL"] = bitShiftL] = "bitShiftL"; // << prec:9
+  const bitShiftR = 48137; TokenType[TokenType["bitShiftR"] = bitShiftR] = "bitShiftR"; // >>/>>> prec:9
+  const plus = 49802; TokenType[TokenType["plus"] = plus] = "plus"; // + prec:10 prefix startsExpr
+  const minus = 50826; TokenType[TokenType["minus"] = minus] = "minus"; // - prec:10 prefix startsExpr
+  const modulo = 51723; TokenType[TokenType["modulo"] = modulo] = "modulo"; // % prec:11 startsExpr
+  const star = 52235; TokenType[TokenType["star"] = star] = "star"; // * prec:11
+  const slash = 53259; TokenType[TokenType["slash"] = slash] = "slash"; // / prec:11
+  const exponent = 54348; TokenType[TokenType["exponent"] = exponent] = "exponent"; // ** prec:12 rightAssociative
+  const jsxName = 55296; TokenType[TokenType["jsxName"] = jsxName] = "jsxName"; // jsxName
+  const jsxText = 56320; TokenType[TokenType["jsxText"] = jsxText] = "jsxText"; // jsxText
+  const jsxEmptyText = 57344; TokenType[TokenType["jsxEmptyText"] = jsxEmptyText] = "jsxEmptyText"; // jsxEmptyText
+  const jsxTagStart = 58880; TokenType[TokenType["jsxTagStart"] = jsxTagStart] = "jsxTagStart"; // jsxTagStart startsExpr
+  const jsxTagEnd = 59392; TokenType[TokenType["jsxTagEnd"] = jsxTagEnd] = "jsxTagEnd"; // jsxTagEnd
+  const typeParameterStart = 60928; TokenType[TokenType["typeParameterStart"] = typeParameterStart] = "typeParameterStart"; // typeParameterStart startsExpr
+  const nonNullAssertion = 61440; TokenType[TokenType["nonNullAssertion"] = nonNullAssertion] = "nonNullAssertion"; // nonNullAssertion
+  const _break = 62480; TokenType[TokenType["_break"] = _break] = "_break"; // break keyword
+  const _case = 63504; TokenType[TokenType["_case"] = _case] = "_case"; // case keyword
+  const _catch = 64528; TokenType[TokenType["_catch"] = _catch] = "_catch"; // catch keyword
+  const _continue = 65552; TokenType[TokenType["_continue"] = _continue] = "_continue"; // continue keyword
+  const _debugger = 66576; TokenType[TokenType["_debugger"] = _debugger] = "_debugger"; // debugger keyword
+  const _default = 67600; TokenType[TokenType["_default"] = _default] = "_default"; // default keyword
+  const _do = 68624; TokenType[TokenType["_do"] = _do] = "_do"; // do keyword
+  const _else = 69648; TokenType[TokenType["_else"] = _else] = "_else"; // else keyword
+  const _finally = 70672; TokenType[TokenType["_finally"] = _finally] = "_finally"; // finally keyword
+  const _for = 71696; TokenType[TokenType["_for"] = _for] = "_for"; // for keyword
+  const _function = 73232; TokenType[TokenType["_function"] = _function] = "_function"; // function keyword startsExpr
+  const _if = 73744; TokenType[TokenType["_if"] = _if] = "_if"; // if keyword
+  const _return = 74768; TokenType[TokenType["_return"] = _return] = "_return"; // return keyword
+  const _switch = 75792; TokenType[TokenType["_switch"] = _switch] = "_switch"; // switch keyword
+  const _throw = 77456; TokenType[TokenType["_throw"] = _throw] = "_throw"; // throw keyword prefix startsExpr
+  const _try = 77840; TokenType[TokenType["_try"] = _try] = "_try"; // try keyword
+  const _var = 78864; TokenType[TokenType["_var"] = _var] = "_var"; // var keyword
+  const _let = 79888; TokenType[TokenType["_let"] = _let] = "_let"; // let keyword
+  const _const = 80912; TokenType[TokenType["_const"] = _const] = "_const"; // const keyword
+  const _while = 81936; TokenType[TokenType["_while"] = _while] = "_while"; // while keyword
+  const _with = 82960; TokenType[TokenType["_with"] = _with] = "_with"; // with keyword
+  const _new = 84496; TokenType[TokenType["_new"] = _new] = "_new"; // new keyword startsExpr
+  const _this = 85520; TokenType[TokenType["_this"] = _this] = "_this"; // this keyword startsExpr
+  const _super = 86544; TokenType[TokenType["_super"] = _super] = "_super"; // super keyword startsExpr
+  const _class = 87568; TokenType[TokenType["_class"] = _class] = "_class"; // class keyword startsExpr
+  const _extends = 88080; TokenType[TokenType["_extends"] = _extends] = "_extends"; // extends keyword
+  const _export = 89104; TokenType[TokenType["_export"] = _export] = "_export"; // export keyword
+  const _import = 90640; TokenType[TokenType["_import"] = _import] = "_import"; // import keyword startsExpr
+  const _yield = 91664; TokenType[TokenType["_yield"] = _yield] = "_yield"; // yield keyword startsExpr
+  const _null = 92688; TokenType[TokenType["_null"] = _null] = "_null"; // null keyword startsExpr
+  const _true = 93712; TokenType[TokenType["_true"] = _true] = "_true"; // true keyword startsExpr
+  const _false = 94736; TokenType[TokenType["_false"] = _false] = "_false"; // false keyword startsExpr
+  const _in = 95256; TokenType[TokenType["_in"] = _in] = "_in"; // in prec:8 keyword
+  const _instanceof = 96280; TokenType[TokenType["_instanceof"] = _instanceof] = "_instanceof"; // instanceof prec:8 keyword
+  const _typeof = 97936; TokenType[TokenType["_typeof"] = _typeof] = "_typeof"; // typeof keyword prefix startsExpr
+  const _void = 98960; TokenType[TokenType["_void"] = _void] = "_void"; // void keyword prefix startsExpr
+  const _delete = 99984; TokenType[TokenType["_delete"] = _delete] = "_delete"; // delete keyword prefix startsExpr
+  const _async = 100880; TokenType[TokenType["_async"] = _async] = "_async"; // async keyword startsExpr
+  const _get = 101904; TokenType[TokenType["_get"] = _get] = "_get"; // get keyword startsExpr
+  const _set = 102928; TokenType[TokenType["_set"] = _set] = "_set"; // set keyword startsExpr
+  const _declare = 103952; TokenType[TokenType["_declare"] = _declare] = "_declare"; // declare keyword startsExpr
+  const _readonly = 104976; TokenType[TokenType["_readonly"] = _readonly] = "_readonly"; // readonly keyword startsExpr
+  const _abstract = 106000; TokenType[TokenType["_abstract"] = _abstract] = "_abstract"; // abstract keyword startsExpr
+  const _static = 107024; TokenType[TokenType["_static"] = _static] = "_static"; // static keyword startsExpr
+  const _public = 107536; TokenType[TokenType["_public"] = _public] = "_public"; // public keyword
+  const _private = 108560; TokenType[TokenType["_private"] = _private] = "_private"; // private keyword
+  const _protected = 109584; TokenType[TokenType["_protected"] = _protected] = "_protected"; // protected keyword
+  const _override = 110608; TokenType[TokenType["_override"] = _override] = "_override"; // override keyword
+  const _as = 112144; TokenType[TokenType["_as"] = _as] = "_as"; // as keyword startsExpr
+  const _enum = 113168; TokenType[TokenType["_enum"] = _enum] = "_enum"; // enum keyword startsExpr
+  const _type = 114192; TokenType[TokenType["_type"] = _type] = "_type"; // type keyword startsExpr
+  const _implements = 115216; TokenType[TokenType["_implements"] = _implements] = "_implements"; // implements keyword startsExpr
+})(TokenType || (TokenType = {}));
+export function formatTokenType(tokenType) {
+  switch (tokenType) {
+    case TokenType.num:
+      return "num";
+    case TokenType.bigint:
+      return "bigint";
+    case TokenType.decimal:
+      return "decimal";
+    case TokenType.regexp:
+      return "regexp";
+    case TokenType.string:
+      return "string";
+    case TokenType.name:
+      return "name";
+    case TokenType.eof:
+      return "eof";
+    case TokenType.bracketL:
+      return "[";
+    case TokenType.bracketR:
+      return "]";
+    case TokenType.braceL:
+      return "{";
+    case TokenType.braceBarL:
+      return "{|";
+    case TokenType.braceR:
+      return "}";
+    case TokenType.braceBarR:
+      return "|}";
+    case TokenType.parenL:
+      return "(";
+    case TokenType.parenR:
+      return ")";
+    case TokenType.comma:
+      return ",";
+    case TokenType.semi:
+      return ";";
+    case TokenType.colon:
+      return ":";
+    case TokenType.doubleColon:
+      return "::";
+    case TokenType.dot:
+      return ".";
+    case TokenType.question:
+      return "?";
+    case TokenType.questionDot:
+      return "?.";
+    case TokenType.arrow:
+      return "=>";
+    case TokenType.template:
+      return "template";
+    case TokenType.ellipsis:
+      return "...";
+    case TokenType.backQuote:
+      return "`";
+    case TokenType.dollarBraceL:
+      return "${";
+    case TokenType.at:
+      return "@";
+    case TokenType.hash:
+      return "#";
+    case TokenType.eq:
+      return "=";
+    case TokenType.assign:
+      return "_=";
+    case TokenType.preIncDec:
+      return "++/--";
+    case TokenType.postIncDec:
+      return "++/--";
+    case TokenType.bang:
+      return "!";
+    case TokenType.tilde:
+      return "~";
+    case TokenType.pipeline:
+      return "|>";
+    case TokenType.nullishCoalescing:
+      return "??";
+    case TokenType.logicalOR:
+      return "||";
+    case TokenType.logicalAND:
+      return "&&";
+    case TokenType.bitwiseOR:
+      return "|";
+    case TokenType.bitwiseXOR:
+      return "^";
+    case TokenType.bitwiseAND:
+      return "&";
+    case TokenType.equality:
+      return "==/!=";
+    case TokenType.lessThan:
+      return "<";
+    case TokenType.greaterThan:
+      return ">";
+    case TokenType.relationalOrEqual:
+      return "<=/>=";
+    case TokenType.bitShiftL:
+      return "<<";
+    case TokenType.bitShiftR:
+      return ">>/>>>";
+    case TokenType.plus:
+      return "+";
+    case TokenType.minus:
+      return "-";
+    case TokenType.modulo:
+      return "%";
+    case TokenType.star:
+      return "*";
+    case TokenType.slash:
+      return "/";
+    case TokenType.exponent:
+      return "**";
+    case TokenType.jsxName:
+      return "jsxName";
+    case TokenType.jsxText:
+      return "jsxText";
+    case TokenType.jsxEmptyText:
+      return "jsxEmptyText";
+    case TokenType.jsxTagStart:
+      return "jsxTagStart";
+    case TokenType.jsxTagEnd:
+      return "jsxTagEnd";
+    case TokenType.typeParameterStart:
+      return "typeParameterStart";
+    case TokenType.nonNullAssertion:
+      return "nonNullAssertion";
+    case TokenType._break:
+      return "break";
+    case TokenType._case:
+      return "case";
+    case TokenType._catch:
+      return "catch";
+    case TokenType._continue:
+      return "continue";
+    case TokenType._debugger:
+      return "debugger";
+    case TokenType._default:
+      return "default";
+    case TokenType._do:
+      return "do";
+    case TokenType._else:
+      return "else";
+    case TokenType._finally:
+      return "finally";
+    case TokenType._for:
+      return "for";
+    case TokenType._function:
+      return "function";
+    case TokenType._if:
+      return "if";
+    case TokenType._return:
+      return "return";
+    case TokenType._switch:
+      return "switch";
+    case TokenType._throw:
+      return "throw";
+    case TokenType._try:
+      return "try";
+    case TokenType._var:
+      return "var";
+    case TokenType._let:
+      return "let";
+    case TokenType._const:
+      return "const";
+    case TokenType._while:
+      return "while";
+    case TokenType._with:
+      return "with";
+    case TokenType._new:
+      return "new";
+    case TokenType._this:
+      return "this";
+    case TokenType._super:
+      return "super";
+    case TokenType._class:
+      return "class";
+    case TokenType._extends:
+      return "extends";
+    case TokenType._export:
+      return "export";
+    case TokenType._import:
+      return "import";
+    case TokenType._yield:
+      return "yield";
+    case TokenType._null:
+      return "null";
+    case TokenType._true:
+      return "true";
+    case TokenType._false:
+      return "false";
+    case TokenType._in:
+      return "in";
+    case TokenType._instanceof:
+      return "instanceof";
+    case TokenType._typeof:
+      return "typeof";
+    case TokenType._void:
+      return "void";
+    case TokenType._delete:
+      return "delete";
+    case TokenType._async:
+      return "async";
+    case TokenType._get:
+      return "get";
+    case TokenType._set:
+      return "set";
+    case TokenType._declare:
+      return "declare";
+    case TokenType._readonly:
+      return "readonly";
+    case TokenType._abstract:
+      return "abstract";
+    case TokenType._static:
+      return "static";
+    case TokenType._public:
+      return "public";
+    case TokenType._private:
+      return "private";
+    case TokenType._protected:
+      return "protected";
+    case TokenType._override:
+      return "override";
+    case TokenType._as:
+      return "as";
+    case TokenType._enum:
+      return "enum";
+    case TokenType._type:
+      return "type";
+    case TokenType._implements:
+      return "implements";
+    default:
+      return "";
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/base.js b/node_modules/sucrase/dist/esm/parser/traverser/base.js
new file mode 100644
index 0000000..df24ff7
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/base.js
@@ -0,0 +1,60 @@
+import State from "../tokenizer/state";
+import {charCodes} from "../util/charcodes";
+
+export let isJSXEnabled;
+export let isTypeScriptEnabled;
+export let isFlowEnabled;
+export let state;
+export let input;
+export let nextContextId;
+
+export function getNextContextId() {
+  return nextContextId++;
+}
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export function augmentError(error) {
+  if ("pos" in error) {
+    const loc = locationForIndex(error.pos);
+    error.message += ` (${loc.line}:${loc.column})`;
+    error.loc = loc;
+  }
+  return error;
+}
+
+export class Loc {
+  
+  
+  constructor(line, column) {
+    this.line = line;
+    this.column = column;
+  }
+}
+
+export function locationForIndex(pos) {
+  let line = 1;
+  let column = 1;
+  for (let i = 0; i < pos; i++) {
+    if (input.charCodeAt(i) === charCodes.lineFeed) {
+      line++;
+      column = 1;
+    } else {
+      column++;
+    }
+  }
+  return new Loc(line, column);
+}
+
+export function initParser(
+  inputCode,
+  isJSXEnabledArg,
+  isTypeScriptEnabledArg,
+  isFlowEnabledArg,
+) {
+  input = inputCode;
+  state = new State();
+  nextContextId = 1;
+  isJSXEnabled = isJSXEnabledArg;
+  isTypeScriptEnabled = isTypeScriptEnabledArg;
+  isFlowEnabled = isFlowEnabledArg;
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/expression.js b/node_modules/sucrase/dist/esm/parser/traverser/expression.js
new file mode 100644
index 0000000..aa6717f
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/expression.js
@@ -0,0 +1,1022 @@
+/* eslint max-len: 0 */
+
+// A recursive descent parser operates by defining functions for all
+// syntactic elements, and recursively calling those, each function
+// advancing the input stream and returning an AST node. Precedence
+// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
+// instead of `(!x)[1]` is handled by the fact that the parser
+// function that parses unary prefix operators is called first, and
+// in turn calls the function that parses `[]` subscripts — that
+// way, it'll receive the node for `x[1]` already parsed, and wraps
+// *that* in the unary operator node.
+//
+// Acorn uses an [operator precedence parser][opp] to handle binary
+// operator precedence, because it is much more compact than using
+// the technique outlined above, which uses different, nesting
+// functions to specify precedence, for all of the ten binary
+// precedence levels that JavaScript defines.
+//
+// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser
+
+import {
+  flowParseArrow,
+  flowParseFunctionBodyAndFinish,
+  flowParseMaybeAssign,
+  flowParseSubscript,
+  flowParseSubscripts,
+  flowParseVariance,
+  flowStartParseAsyncArrowFromCallExpression,
+  flowStartParseNewArguments,
+  flowStartParseObjPropValue,
+} from "../plugins/flow";
+import {jsxParseElement} from "../plugins/jsx/index";
+import {typedParseConditional, typedParseParenItem} from "../plugins/types";
+import {
+  tsParseArrow,
+  tsParseFunctionBodyAndFinish,
+  tsParseMaybeAssign,
+  tsParseSubscript,
+  tsParseType,
+  tsParseTypeAssertion,
+  tsStartParseAsyncArrowFromCallExpression,
+  tsStartParseObjPropValue,
+} from "../plugins/typescript";
+import {
+  eat,
+  IdentifierRole,
+  lookaheadCharCode,
+  lookaheadType,
+  match,
+  next,
+  nextTemplateToken,
+  popTypeContext,
+  pushTypeContext,
+  rescan_gt,
+  retokenizeSlashAsRegex,
+} from "../tokenizer/index";
+import {ContextualKeyword} from "../tokenizer/keywords";
+import {Scope} from "../tokenizer/state";
+import {TokenType, TokenType as tt} from "../tokenizer/types";
+import {charCodes} from "../util/charcodes";
+import {IS_IDENTIFIER_START} from "../util/identifier";
+import {getNextContextId, isFlowEnabled, isJSXEnabled, isTypeScriptEnabled, state} from "./base";
+import {
+  markPriorBindingIdentifier,
+  parseBindingIdentifier,
+  parseMaybeDefault,
+  parseRest,
+  parseSpread,
+} from "./lval";
+import {
+  parseBlock,
+  parseBlockBody,
+  parseClass,
+  parseDecorators,
+  parseFunction,
+  parseFunctionParams,
+} from "./statement";
+import {
+  canInsertSemicolon,
+  eatContextual,
+  expect,
+  expectContextual,
+  hasFollowingLineBreak,
+  hasPrecedingLineBreak,
+  isContextual,
+  unexpected,
+} from "./util";
+
+export class StopState {
+  
+  constructor(stop) {
+    this.stop = stop;
+  }
+}
+
+// ### Expression parsing
+
+// These nest, from the most general expression type at the top to
+// 'atomic', nondivisible expression types at the bottom. Most of
+// the functions will simply let the function (s) below them parse,
+// and, *if* the syntactic construct they handle is present, wrap
+// the AST node that the inner parser gave them in another node.
+export function parseExpression(noIn = false) {
+  parseMaybeAssign(noIn);
+  if (match(tt.comma)) {
+    while (eat(tt.comma)) {
+      parseMaybeAssign(noIn);
+    }
+  }
+}
+
+/**
+ * noIn is used when parsing a for loop so that we don't interpret a following "in" as the binary
+ * operatior.
+ * isWithinParens is used to indicate that we're parsing something that might be a comma expression
+ * or might be an arrow function or might be a Flow type assertion (which requires explicit parens).
+ * In these cases, we should allow : and ?: after the initial "left" part.
+ */
+export function parseMaybeAssign(noIn = false, isWithinParens = false) {
+  if (isTypeScriptEnabled) {
+    return tsParseMaybeAssign(noIn, isWithinParens);
+  } else if (isFlowEnabled) {
+    return flowParseMaybeAssign(noIn, isWithinParens);
+  } else {
+    return baseParseMaybeAssign(noIn, isWithinParens);
+  }
+}
+
+// Parse an assignment expression. This includes applications of
+// operators like `+=`.
+// Returns true if the expression was an arrow function.
+export function baseParseMaybeAssign(noIn, isWithinParens) {
+  if (match(tt._yield)) {
+    parseYield();
+    return false;
+  }
+
+  if (match(tt.parenL) || match(tt.name) || match(tt._yield)) {
+    state.potentialArrowAt = state.start;
+  }
+
+  const wasArrow = parseMaybeConditional(noIn);
+  if (isWithinParens) {
+    parseParenItem();
+  }
+  if (state.type & TokenType.IS_ASSIGN) {
+    next();
+    parseMaybeAssign(noIn);
+    return false;
+  }
+  return wasArrow;
+}
+
+// Parse a ternary conditional (`?:`) operator.
+// Returns true if the expression was an arrow function.
+function parseMaybeConditional(noIn) {
+  const wasArrow = parseExprOps(noIn);
+  if (wasArrow) {
+    return true;
+  }
+  parseConditional(noIn);
+  return false;
+}
+
+function parseConditional(noIn) {
+  if (isTypeScriptEnabled || isFlowEnabled) {
+    typedParseConditional(noIn);
+  } else {
+    baseParseConditional(noIn);
+  }
+}
+
+export function baseParseConditional(noIn) {
+  if (eat(tt.question)) {
+    parseMaybeAssign();
+    expect(tt.colon);
+    parseMaybeAssign(noIn);
+  }
+}
+
+// Start the precedence parser.
+// Returns true if this was an arrow function
+function parseExprOps(noIn) {
+  const startTokenIndex = state.tokens.length;
+  const wasArrow = parseMaybeUnary();
+  if (wasArrow) {
+    return true;
+  }
+  parseExprOp(startTokenIndex, -1, noIn);
+  return false;
+}
+
+// Parse binary operators with the operator precedence parsing
+// algorithm. `left` is the left-hand side of the operator.
+// `minPrec` provides context that allows the function to stop and
+// defer further parser to one of its callers when it encounters an
+// operator that has a lower precedence than the set it is parsing.
+function parseExprOp(startTokenIndex, minPrec, noIn) {
+  if (
+    isTypeScriptEnabled &&
+    (tt._in & TokenType.PRECEDENCE_MASK) > minPrec &&
+    !hasPrecedingLineBreak() &&
+    (eatContextual(ContextualKeyword._as) || eatContextual(ContextualKeyword._satisfies))
+  ) {
+    const oldIsType = pushTypeContext(1);
+    tsParseType();
+    popTypeContext(oldIsType);
+    rescan_gt();
+    parseExprOp(startTokenIndex, minPrec, noIn);
+    return;
+  }
+
+  const prec = state.type & TokenType.PRECEDENCE_MASK;
+  if (prec > 0 && (!noIn || !match(tt._in))) {
+    if (prec > minPrec) {
+      const op = state.type;
+      next();
+      if (op === tt.nullishCoalescing) {
+        state.tokens[state.tokens.length - 1].nullishStartIndex = startTokenIndex;
+      }
+
+      const rhsStartTokenIndex = state.tokens.length;
+      parseMaybeUnary();
+      // Extend the right operand of this operator if possible.
+      parseExprOp(rhsStartTokenIndex, op & TokenType.IS_RIGHT_ASSOCIATIVE ? prec - 1 : prec, noIn);
+      if (op === tt.nullishCoalescing) {
+        state.tokens[startTokenIndex].numNullishCoalesceStarts++;
+        state.tokens[state.tokens.length - 1].numNullishCoalesceEnds++;
+      }
+      // Continue with any future operator holding this expression as the left operand.
+      parseExprOp(startTokenIndex, minPrec, noIn);
+    }
+  }
+}
+
+// Parse unary operators, both prefix and postfix.
+// Returns true if this was an arrow function.
+export function parseMaybeUnary() {
+  if (isTypeScriptEnabled && !isJSXEnabled && eat(tt.lessThan)) {
+    tsParseTypeAssertion();
+    return false;
+  }
+  if (
+    isContextual(ContextualKeyword._module) &&
+    lookaheadCharCode() === charCodes.leftCurlyBrace &&
+    !hasFollowingLineBreak()
+  ) {
+    parseModuleExpression();
+    return false;
+  }
+  if (state.type & TokenType.IS_PREFIX) {
+    next();
+    parseMaybeUnary();
+    return false;
+  }
+
+  const wasArrow = parseExprSubscripts();
+  if (wasArrow) {
+    return true;
+  }
+  while (state.type & TokenType.IS_POSTFIX && !canInsertSemicolon()) {
+    // The tokenizer calls everything a preincrement, so make it a postincrement when
+    // we see it in that context.
+    if (state.type === tt.preIncDec) {
+      state.type = tt.postIncDec;
+    }
+    next();
+  }
+  return false;
+}
+
+// Parse call, dot, and `[]`-subscript expressions.
+// Returns true if this was an arrow function.
+export function parseExprSubscripts() {
+  const startTokenIndex = state.tokens.length;
+  const wasArrow = parseExprAtom();
+  if (wasArrow) {
+    return true;
+  }
+  parseSubscripts(startTokenIndex);
+  // If there was any optional chain operation, the start token would be marked
+  // as such, so also mark the end now.
+  if (state.tokens.length > startTokenIndex && state.tokens[startTokenIndex].isOptionalChainStart) {
+    state.tokens[state.tokens.length - 1].isOptionalChainEnd = true;
+  }
+  return false;
+}
+
+function parseSubscripts(startTokenIndex, noCalls = false) {
+  if (isFlowEnabled) {
+    flowParseSubscripts(startTokenIndex, noCalls);
+  } else {
+    baseParseSubscripts(startTokenIndex, noCalls);
+  }
+}
+
+export function baseParseSubscripts(startTokenIndex, noCalls = false) {
+  const stopState = new StopState(false);
+  do {
+    parseSubscript(startTokenIndex, noCalls, stopState);
+  } while (!stopState.stop && !state.error);
+}
+
+function parseSubscript(startTokenIndex, noCalls, stopState) {
+  if (isTypeScriptEnabled) {
+    tsParseSubscript(startTokenIndex, noCalls, stopState);
+  } else if (isFlowEnabled) {
+    flowParseSubscript(startTokenIndex, noCalls, stopState);
+  } else {
+    baseParseSubscript(startTokenIndex, noCalls, stopState);
+  }
+}
+
+/** Set 'state.stop = true' to indicate that we should stop parsing subscripts. */
+export function baseParseSubscript(
+  startTokenIndex,
+  noCalls,
+  stopState,
+) {
+  if (!noCalls && eat(tt.doubleColon)) {
+    parseNoCallExpr();
+    stopState.stop = true;
+    // Propagate startTokenIndex so that `a::b?.()` will keep `a` as the first token. We may want
+    // to revisit this in the future when fully supporting bind syntax.
+    parseSubscripts(startTokenIndex, noCalls);
+  } else if (match(tt.questionDot)) {
+    state.tokens[startTokenIndex].isOptionalChainStart = true;
+    if (noCalls && lookaheadType() === tt.parenL) {
+      stopState.stop = true;
+      return;
+    }
+    next();
+    state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+
+    if (eat(tt.bracketL)) {
+      parseExpression();
+      expect(tt.bracketR);
+    } else if (eat(tt.parenL)) {
+      parseCallExpressionArguments();
+    } else {
+      parseMaybePrivateName();
+    }
+  } else if (eat(tt.dot)) {
+    state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+    parseMaybePrivateName();
+  } else if (eat(tt.bracketL)) {
+    state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+    parseExpression();
+    expect(tt.bracketR);
+  } else if (!noCalls && match(tt.parenL)) {
+    if (atPossibleAsync()) {
+      // We see "async", but it's possible it's a usage of the name "async". Parse as if it's a
+      // function call, and if we see an arrow later, backtrack and re-parse as a parameter list.
+      const snapshot = state.snapshot();
+      const asyncStartTokenIndex = state.tokens.length;
+      next();
+      state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+
+      const callContextId = getNextContextId();
+
+      state.tokens[state.tokens.length - 1].contextId = callContextId;
+      parseCallExpressionArguments();
+      state.tokens[state.tokens.length - 1].contextId = callContextId;
+
+      if (shouldParseAsyncArrow()) {
+        // We hit an arrow, so backtrack and start again parsing function parameters.
+        state.restoreFromSnapshot(snapshot);
+        stopState.stop = true;
+        state.scopeDepth++;
+
+        parseFunctionParams();
+        parseAsyncArrowFromCallExpression(asyncStartTokenIndex);
+      }
+    } else {
+      next();
+      state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;
+      const callContextId = getNextContextId();
+      state.tokens[state.tokens.length - 1].contextId = callContextId;
+      parseCallExpressionArguments();
+      state.tokens[state.tokens.length - 1].contextId = callContextId;
+    }
+  } else if (match(tt.backQuote)) {
+    // Tagged template expression.
+    parseTemplate();
+  } else {
+    stopState.stop = true;
+  }
+}
+
+export function atPossibleAsync() {
+  // This was made less strict than the original version to avoid passing around nodes, but it
+  // should be safe to have rare false positives here.
+  return (
+    state.tokens[state.tokens.length - 1].contextualKeyword === ContextualKeyword._async &&
+    !canInsertSemicolon()
+  );
+}
+
+export function parseCallExpressionArguments() {
+  let first = true;
+  while (!eat(tt.parenR) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      if (eat(tt.parenR)) {
+        break;
+      }
+    }
+
+    parseExprListItem(false);
+  }
+}
+
+function shouldParseAsyncArrow() {
+  return match(tt.colon) || match(tt.arrow);
+}
+
+function parseAsyncArrowFromCallExpression(startTokenIndex) {
+  if (isTypeScriptEnabled) {
+    tsStartParseAsyncArrowFromCallExpression();
+  } else if (isFlowEnabled) {
+    flowStartParseAsyncArrowFromCallExpression();
+  }
+  expect(tt.arrow);
+  parseArrowExpression(startTokenIndex);
+}
+
+// Parse a no-call expression (like argument of `new` or `::` operators).
+
+function parseNoCallExpr() {
+  const startTokenIndex = state.tokens.length;
+  parseExprAtom();
+  parseSubscripts(startTokenIndex, true);
+}
+
+// Parse an atomic expression — either a single token that is an
+// expression, an expression started by a keyword like `function` or
+// `new`, or an expression wrapped in punctuation like `()`, `[]`,
+// or `{}`.
+// Returns true if the parsed expression was an arrow function.
+export function parseExprAtom() {
+  if (eat(tt.modulo)) {
+    // V8 intrinsic expression. Just parse the identifier, and the function invocation is parsed
+    // naturally.
+    parseIdentifier();
+    return false;
+  }
+
+  if (match(tt.jsxText) || match(tt.jsxEmptyText)) {
+    parseLiteral();
+    return false;
+  } else if (match(tt.lessThan) && isJSXEnabled) {
+    state.type = tt.jsxTagStart;
+    jsxParseElement();
+    next();
+    return false;
+  }
+
+  const canBeArrow = state.potentialArrowAt === state.start;
+  switch (state.type) {
+    case tt.slash:
+    case tt.assign:
+      retokenizeSlashAsRegex();
+    // Fall through.
+
+    case tt._super:
+    case tt._this:
+    case tt.regexp:
+    case tt.num:
+    case tt.bigint:
+    case tt.decimal:
+    case tt.string:
+    case tt._null:
+    case tt._true:
+    case tt._false:
+      next();
+      return false;
+
+    case tt._import:
+      next();
+      if (match(tt.dot)) {
+        // import.meta
+        state.tokens[state.tokens.length - 1].type = tt.name;
+        next();
+        parseIdentifier();
+      }
+      return false;
+
+    case tt.name: {
+      const startTokenIndex = state.tokens.length;
+      const functionStart = state.start;
+      const contextualKeyword = state.contextualKeyword;
+      parseIdentifier();
+      if (contextualKeyword === ContextualKeyword._await) {
+        parseAwait();
+        return false;
+      } else if (
+        contextualKeyword === ContextualKeyword._async &&
+        match(tt._function) &&
+        !canInsertSemicolon()
+      ) {
+        next();
+        parseFunction(functionStart, false);
+        return false;
+      } else if (
+        canBeArrow &&
+        contextualKeyword === ContextualKeyword._async &&
+        !canInsertSemicolon() &&
+        match(tt.name)
+      ) {
+        state.scopeDepth++;
+        parseBindingIdentifier(false);
+        expect(tt.arrow);
+        // let foo = async bar => {};
+        parseArrowExpression(startTokenIndex);
+        return true;
+      } else if (match(tt._do) && !canInsertSemicolon()) {
+        next();
+        parseBlock();
+        return false;
+      }
+
+      if (canBeArrow && !canInsertSemicolon() && match(tt.arrow)) {
+        state.scopeDepth++;
+        markPriorBindingIdentifier(false);
+        expect(tt.arrow);
+        parseArrowExpression(startTokenIndex);
+        return true;
+      }
+
+      state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.Access;
+      return false;
+    }
+
+    case tt._do: {
+      next();
+      parseBlock();
+      return false;
+    }
+
+    case tt.parenL: {
+      const wasArrow = parseParenAndDistinguishExpression(canBeArrow);
+      return wasArrow;
+    }
+
+    case tt.bracketL:
+      next();
+      parseExprList(tt.bracketR, true);
+      return false;
+
+    case tt.braceL:
+      parseObj(false, false);
+      return false;
+
+    case tt._function:
+      parseFunctionExpression();
+      return false;
+
+    case tt.at:
+      parseDecorators();
+    // Fall through.
+
+    case tt._class:
+      parseClass(false);
+      return false;
+
+    case tt._new:
+      parseNew();
+      return false;
+
+    case tt.backQuote:
+      parseTemplate();
+      return false;
+
+    case tt.doubleColon: {
+      next();
+      parseNoCallExpr();
+      return false;
+    }
+
+    case tt.hash: {
+      const code = lookaheadCharCode();
+      if (IS_IDENTIFIER_START[code] || code === charCodes.backslash) {
+        parseMaybePrivateName();
+      } else {
+        next();
+      }
+      // Smart pipeline topic reference.
+      return false;
+    }
+
+    default:
+      unexpected();
+      return false;
+  }
+}
+
+function parseMaybePrivateName() {
+  eat(tt.hash);
+  parseIdentifier();
+}
+
+function parseFunctionExpression() {
+  const functionStart = state.start;
+  parseIdentifier();
+  if (eat(tt.dot)) {
+    // function.sent
+    parseIdentifier();
+  }
+  parseFunction(functionStart, false);
+}
+
+export function parseLiteral() {
+  next();
+}
+
+export function parseParenExpression() {
+  expect(tt.parenL);
+  parseExpression();
+  expect(tt.parenR);
+}
+
+// Returns true if this was an arrow expression.
+function parseParenAndDistinguishExpression(canBeArrow) {
+  // Assume this is a normal parenthesized expression, but if we see an arrow, we'll bail and
+  // start over as a parameter list.
+  const snapshot = state.snapshot();
+
+  const startTokenIndex = state.tokens.length;
+  expect(tt.parenL);
+
+  let first = true;
+
+  while (!match(tt.parenR) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      if (match(tt.parenR)) {
+        break;
+      }
+    }
+
+    if (match(tt.ellipsis)) {
+      parseRest(false /* isBlockScope */);
+      parseParenItem();
+      break;
+    } else {
+      parseMaybeAssign(false, true);
+    }
+  }
+
+  expect(tt.parenR);
+
+  if (canBeArrow && shouldParseArrow()) {
+    const wasArrow = parseArrow();
+    if (wasArrow) {
+      // It was an arrow function this whole time, so start over and parse it as params so that we
+      // get proper token annotations.
+      state.restoreFromSnapshot(snapshot);
+      state.scopeDepth++;
+      // Don't specify a context ID because arrow functions don't need a context ID.
+      parseFunctionParams();
+      parseArrow();
+      parseArrowExpression(startTokenIndex);
+      if (state.error) {
+        // Nevermind! This must have been something that looks very much like an
+        // arrow function but where its "parameter list" isn't actually a valid
+        // parameter list. Force non-arrow parsing.
+        // See https://github.com/alangpierce/sucrase/issues/666 for an example.
+        state.restoreFromSnapshot(snapshot);
+        parseParenAndDistinguishExpression(false);
+        return false;
+      }
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function shouldParseArrow() {
+  return match(tt.colon) || !canInsertSemicolon();
+}
+
+// Returns whether there was an arrow token.
+export function parseArrow() {
+  if (isTypeScriptEnabled) {
+    return tsParseArrow();
+  } else if (isFlowEnabled) {
+    return flowParseArrow();
+  } else {
+    return eat(tt.arrow);
+  }
+}
+
+function parseParenItem() {
+  if (isTypeScriptEnabled || isFlowEnabled) {
+    typedParseParenItem();
+  }
+}
+
+// New's precedence is slightly tricky. It must allow its argument to
+// be a `[]` or dot subscript expression, but not a call — at least,
+// not without wrapping it in parentheses. Thus, it uses the noCalls
+// argument to parseSubscripts to prevent it from consuming the
+// argument list.
+function parseNew() {
+  expect(tt._new);
+  if (eat(tt.dot)) {
+    // new.target
+    parseIdentifier();
+    return;
+  }
+  parseNewCallee();
+  if (isFlowEnabled) {
+    flowStartParseNewArguments();
+  }
+  if (eat(tt.parenL)) {
+    parseExprList(tt.parenR);
+  }
+}
+
+function parseNewCallee() {
+  parseNoCallExpr();
+  eat(tt.questionDot);
+}
+
+export function parseTemplate() {
+  // Finish `, read quasi
+  nextTemplateToken();
+  // Finish quasi, read ${
+  nextTemplateToken();
+  while (!match(tt.backQuote) && !state.error) {
+    expect(tt.dollarBraceL);
+    parseExpression();
+    // Finish }, read quasi
+    nextTemplateToken();
+    // Finish quasi, read either ${ or `
+    nextTemplateToken();
+  }
+  next();
+}
+
+// Parse an object literal or binding pattern.
+export function parseObj(isPattern, isBlockScope) {
+  // Attach a context ID to the object open and close brace and each object key.
+  const contextId = getNextContextId();
+  let first = true;
+
+  next();
+  state.tokens[state.tokens.length - 1].contextId = contextId;
+
+  while (!eat(tt.braceR) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      if (eat(tt.braceR)) {
+        break;
+      }
+    }
+
+    let isGenerator = false;
+    if (match(tt.ellipsis)) {
+      const previousIndex = state.tokens.length;
+      parseSpread();
+      if (isPattern) {
+        // Mark role when the only thing being spread over is an identifier.
+        if (state.tokens.length === previousIndex + 2) {
+          markPriorBindingIdentifier(isBlockScope);
+        }
+        if (eat(tt.braceR)) {
+          break;
+        }
+      }
+      continue;
+    }
+
+    if (!isPattern) {
+      isGenerator = eat(tt.star);
+    }
+
+    if (!isPattern && isContextual(ContextualKeyword._async)) {
+      if (isGenerator) unexpected();
+
+      parseIdentifier();
+      if (
+        match(tt.colon) ||
+        match(tt.parenL) ||
+        match(tt.braceR) ||
+        match(tt.eq) ||
+        match(tt.comma)
+      ) {
+        // This is a key called "async" rather than an async function.
+      } else {
+        if (match(tt.star)) {
+          next();
+          isGenerator = true;
+        }
+        parsePropertyName(contextId);
+      }
+    } else {
+      parsePropertyName(contextId);
+    }
+
+    parseObjPropValue(isPattern, isBlockScope, contextId);
+  }
+
+  state.tokens[state.tokens.length - 1].contextId = contextId;
+}
+
+function isGetterOrSetterMethod(isPattern) {
+  // We go off of the next and don't bother checking if the node key is actually "get" or "set".
+  // This lets us avoid generating a node, and should only make the validation worse.
+  return (
+    !isPattern &&
+    (match(tt.string) || // get "string"() {}
+      match(tt.num) || // get 1() {}
+      match(tt.bracketL) || // get ["string"]() {}
+      match(tt.name) || // get foo() {}
+      !!(state.type & TokenType.IS_KEYWORD)) // get debugger() {}
+  );
+}
+
+// Returns true if this was a method.
+function parseObjectMethod(isPattern, objectContextId) {
+  // We don't need to worry about modifiers because object methods can't have optional bodies, so
+  // the start will never be used.
+  const functionStart = state.start;
+  if (match(tt.parenL)) {
+    if (isPattern) unexpected();
+    parseMethod(functionStart, /* isConstructor */ false);
+    return true;
+  }
+
+  if (isGetterOrSetterMethod(isPattern)) {
+    parsePropertyName(objectContextId);
+    parseMethod(functionStart, /* isConstructor */ false);
+    return true;
+  }
+  return false;
+}
+
+function parseObjectProperty(isPattern, isBlockScope) {
+  if (eat(tt.colon)) {
+    if (isPattern) {
+      parseMaybeDefault(isBlockScope);
+    } else {
+      parseMaybeAssign(false);
+    }
+    return;
+  }
+
+  // Since there's no colon, we assume this is an object shorthand.
+
+  // If we're in a destructuring, we've now discovered that the key was actually an assignee, so
+  // we need to tag it as a declaration with the appropriate scope. Otherwise, we might need to
+  // transform it on access, so mark it as a normal object shorthand.
+  let identifierRole;
+  if (isPattern) {
+    if (state.scopeDepth === 0) {
+      identifierRole = IdentifierRole.ObjectShorthandTopLevelDeclaration;
+    } else if (isBlockScope) {
+      identifierRole = IdentifierRole.ObjectShorthandBlockScopedDeclaration;
+    } else {
+      identifierRole = IdentifierRole.ObjectShorthandFunctionScopedDeclaration;
+    }
+  } else {
+    identifierRole = IdentifierRole.ObjectShorthand;
+  }
+  state.tokens[state.tokens.length - 1].identifierRole = identifierRole;
+
+  // Regardless of whether we know this to be a pattern or if we're in an ambiguous context, allow
+  // parsing as if there's a default value.
+  parseMaybeDefault(isBlockScope, true);
+}
+
+function parseObjPropValue(
+  isPattern,
+  isBlockScope,
+  objectContextId,
+) {
+  if (isTypeScriptEnabled) {
+    tsStartParseObjPropValue();
+  } else if (isFlowEnabled) {
+    flowStartParseObjPropValue();
+  }
+  const wasMethod = parseObjectMethod(isPattern, objectContextId);
+  if (!wasMethod) {
+    parseObjectProperty(isPattern, isBlockScope);
+  }
+}
+
+export function parsePropertyName(objectContextId) {
+  if (isFlowEnabled) {
+    flowParseVariance();
+  }
+  if (eat(tt.bracketL)) {
+    state.tokens[state.tokens.length - 1].contextId = objectContextId;
+    parseMaybeAssign();
+    expect(tt.bracketR);
+    state.tokens[state.tokens.length - 1].contextId = objectContextId;
+  } else {
+    if (match(tt.num) || match(tt.string) || match(tt.bigint) || match(tt.decimal)) {
+      parseExprAtom();
+    } else {
+      parseMaybePrivateName();
+    }
+
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ObjectKey;
+    state.tokens[state.tokens.length - 1].contextId = objectContextId;
+  }
+}
+
+// Parse object or class method.
+export function parseMethod(functionStart, isConstructor) {
+  const funcContextId = getNextContextId();
+
+  state.scopeDepth++;
+  const startTokenIndex = state.tokens.length;
+  const allowModifiers = isConstructor; // For TypeScript parameter properties
+  parseFunctionParams(allowModifiers, funcContextId);
+  parseFunctionBodyAndFinish(functionStart, funcContextId);
+  const endTokenIndex = state.tokens.length;
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, true));
+  state.scopeDepth--;
+}
+
+// Parse arrow function expression.
+// If the parameters are provided, they will be converted to an
+// assignable list.
+export function parseArrowExpression(startTokenIndex) {
+  parseFunctionBody(true);
+  const endTokenIndex = state.tokens.length;
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, true));
+  state.scopeDepth--;
+}
+
+export function parseFunctionBodyAndFinish(functionStart, funcContextId = 0) {
+  if (isTypeScriptEnabled) {
+    tsParseFunctionBodyAndFinish(functionStart, funcContextId);
+  } else if (isFlowEnabled) {
+    flowParseFunctionBodyAndFinish(funcContextId);
+  } else {
+    parseFunctionBody(false, funcContextId);
+  }
+}
+
+export function parseFunctionBody(allowExpression, funcContextId = 0) {
+  const isExpression = allowExpression && !match(tt.braceL);
+
+  if (isExpression) {
+    parseMaybeAssign();
+  } else {
+    parseBlock(true /* isFunctionScope */, funcContextId);
+  }
+}
+
+// Parses a comma-separated list of expressions, and returns them as
+// an array. `close` is the token type that ends the list, and
+// `allowEmpty` can be turned on to allow subsequent commas with
+// nothing in between them to be parsed as `null` (which is needed
+// for array literals).
+
+function parseExprList(close, allowEmpty = false) {
+  let first = true;
+  while (!eat(close) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      if (eat(close)) break;
+    }
+    parseExprListItem(allowEmpty);
+  }
+}
+
+function parseExprListItem(allowEmpty) {
+  if (allowEmpty && match(tt.comma)) {
+    // Empty item; nothing more to parse for this item.
+  } else if (match(tt.ellipsis)) {
+    parseSpread();
+    parseParenItem();
+  } else if (match(tt.question)) {
+    // Partial function application proposal.
+    next();
+  } else {
+    parseMaybeAssign(false, true);
+  }
+}
+
+// Parse the next token as an identifier.
+export function parseIdentifier() {
+  next();
+  state.tokens[state.tokens.length - 1].type = tt.name;
+}
+
+// Parses await expression inside async function.
+function parseAwait() {
+  parseMaybeUnary();
+}
+
+// Parses yield expression inside generator.
+function parseYield() {
+  next();
+  if (!match(tt.semi) && !canInsertSemicolon()) {
+    eat(tt.star);
+    parseMaybeAssign();
+  }
+}
+
+// https://github.com/tc39/proposal-js-module-blocks
+function parseModuleExpression() {
+  expectContextual(ContextualKeyword._module);
+  expect(tt.braceL);
+  // For now, just call parseBlockBody to parse the block. In the future when we
+  // implement full support, we'll want to emit scopes and possibly other
+  // information.
+  parseBlockBody(tt.braceR);
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/index.js b/node_modules/sucrase/dist/esm/parser/traverser/index.js
new file mode 100644
index 0000000..eb8c990
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/index.js
@@ -0,0 +1,18 @@
+
+import {nextToken, skipLineComment} from "../tokenizer/index";
+import {charCodes} from "../util/charcodes";
+import {input, state} from "./base";
+import {parseTopLevel} from "./statement";
+
+export function parseFile() {
+  // If enabled, skip leading hashbang line.
+  if (
+    state.pos === 0 &&
+    input.charCodeAt(0) === charCodes.numberSign &&
+    input.charCodeAt(1) === charCodes.exclamationMark
+  ) {
+    skipLineComment(2);
+  }
+  nextToken();
+  return parseTopLevel();
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/lval.js b/node_modules/sucrase/dist/esm/parser/traverser/lval.js
new file mode 100644
index 0000000..f5c4855
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/lval.js
@@ -0,0 +1,159 @@
+import {flowParseAssignableListItemTypes} from "../plugins/flow";
+import {tsParseAssignableListItemTypes, tsParseModifiers} from "../plugins/typescript";
+import {
+  eat,
+  IdentifierRole,
+  match,
+  next,
+  popTypeContext,
+  pushTypeContext,
+} from "../tokenizer/index";
+import {ContextualKeyword} from "../tokenizer/keywords";
+import {TokenType, TokenType as tt} from "../tokenizer/types";
+import {isFlowEnabled, isTypeScriptEnabled, state} from "./base";
+import {parseIdentifier, parseMaybeAssign, parseObj} from "./expression";
+import {expect, unexpected} from "./util";
+
+export function parseSpread() {
+  next();
+  parseMaybeAssign(false);
+}
+
+export function parseRest(isBlockScope) {
+  next();
+  parseBindingAtom(isBlockScope);
+}
+
+export function parseBindingIdentifier(isBlockScope) {
+  parseIdentifier();
+  markPriorBindingIdentifier(isBlockScope);
+}
+
+export function parseImportedIdentifier() {
+  parseIdentifier();
+  state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportDeclaration;
+}
+
+export function markPriorBindingIdentifier(isBlockScope) {
+  let identifierRole;
+  if (state.scopeDepth === 0) {
+    identifierRole = IdentifierRole.TopLevelDeclaration;
+  } else if (isBlockScope) {
+    identifierRole = IdentifierRole.BlockScopedDeclaration;
+  } else {
+    identifierRole = IdentifierRole.FunctionScopedDeclaration;
+  }
+  state.tokens[state.tokens.length - 1].identifierRole = identifierRole;
+}
+
+// Parses lvalue (assignable) atom.
+export function parseBindingAtom(isBlockScope) {
+  switch (state.type) {
+    case tt._this: {
+      // In TypeScript, "this" may be the name of a parameter, so allow it.
+      const oldIsType = pushTypeContext(0);
+      next();
+      popTypeContext(oldIsType);
+      return;
+    }
+
+    case tt._yield:
+    case tt.name: {
+      state.type = tt.name;
+      parseBindingIdentifier(isBlockScope);
+      return;
+    }
+
+    case tt.bracketL: {
+      next();
+      parseBindingList(tt.bracketR, isBlockScope, true /* allowEmpty */);
+      return;
+    }
+
+    case tt.braceL:
+      parseObj(true, isBlockScope);
+      return;
+
+    default:
+      unexpected();
+  }
+}
+
+export function parseBindingList(
+  close,
+  isBlockScope,
+  allowEmpty = false,
+  allowModifiers = false,
+  contextId = 0,
+) {
+  let first = true;
+
+  let hasRemovedComma = false;
+  const firstItemTokenIndex = state.tokens.length;
+
+  while (!eat(close) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      state.tokens[state.tokens.length - 1].contextId = contextId;
+      // After a "this" type in TypeScript, we need to set the following comma (if any) to also be
+      // a type token so that it will be removed.
+      if (!hasRemovedComma && state.tokens[firstItemTokenIndex].isType) {
+        state.tokens[state.tokens.length - 1].isType = true;
+        hasRemovedComma = true;
+      }
+    }
+    if (allowEmpty && match(tt.comma)) {
+      // Empty item; nothing further to parse for this item.
+    } else if (eat(close)) {
+      break;
+    } else if (match(tt.ellipsis)) {
+      parseRest(isBlockScope);
+      parseAssignableListItemTypes();
+      // Support rest element trailing commas allowed by TypeScript <2.9.
+      eat(TokenType.comma);
+      expect(close);
+      break;
+    } else {
+      parseAssignableListItem(allowModifiers, isBlockScope);
+    }
+  }
+}
+
+function parseAssignableListItem(allowModifiers, isBlockScope) {
+  if (allowModifiers) {
+    tsParseModifiers([
+      ContextualKeyword._public,
+      ContextualKeyword._protected,
+      ContextualKeyword._private,
+      ContextualKeyword._readonly,
+      ContextualKeyword._override,
+    ]);
+  }
+
+  parseMaybeDefault(isBlockScope);
+  parseAssignableListItemTypes();
+  parseMaybeDefault(isBlockScope, true /* leftAlreadyParsed */);
+}
+
+function parseAssignableListItemTypes() {
+  if (isFlowEnabled) {
+    flowParseAssignableListItemTypes();
+  } else if (isTypeScriptEnabled) {
+    tsParseAssignableListItemTypes();
+  }
+}
+
+// Parses assignment pattern around given atom if possible.
+export function parseMaybeDefault(isBlockScope, leftAlreadyParsed = false) {
+  if (!leftAlreadyParsed) {
+    parseBindingAtom(isBlockScope);
+  }
+  if (!eat(tt.eq)) {
+    return;
+  }
+  const eqIndex = state.tokens.length - 1;
+  parseMaybeAssign();
+  state.tokens[eqIndex].rhsEndIndex = state.tokens.length;
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/statement.js b/node_modules/sucrase/dist/esm/parser/traverser/statement.js
new file mode 100644
index 0000000..34a6511
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/statement.js
@@ -0,0 +1,1332 @@
+/* eslint max-len: 0 */
+
+import {File} from "../index";
+import {
+  flowAfterParseClassSuper,
+  flowAfterParseVarHead,
+  flowParseExportDeclaration,
+  flowParseExportStar,
+  flowParseIdentifierStatement,
+  flowParseImportSpecifier,
+  flowParseTypeAnnotation,
+  flowParseTypeParameterDeclaration,
+  flowShouldDisallowExportDefaultSpecifier,
+  flowShouldParseExportDeclaration,
+  flowShouldParseExportStar,
+  flowStartParseFunctionParams,
+  flowStartParseImportSpecifiers,
+  flowTryParseExportDefaultExpression,
+  flowTryParseStatement,
+} from "../plugins/flow";
+import {
+  tsAfterParseClassSuper,
+  tsAfterParseVarHead,
+  tsIsDeclarationStart,
+  tsParseExportDeclaration,
+  tsParseExportSpecifier,
+  tsParseIdentifierStatement,
+  tsParseImportEqualsDeclaration,
+  tsParseImportSpecifier,
+  tsParseMaybeDecoratorArguments,
+  tsParseModifiers,
+  tsStartParseFunctionParams,
+  tsTryParseClassMemberWithIsStatic,
+  tsTryParseExport,
+  tsTryParseExportDefaultExpression,
+  tsTryParseStatementContent,
+  tsTryParseTypeAnnotation,
+  tsTryParseTypeParameters,
+} from "../plugins/typescript";
+import {
+  eat,
+  eatTypeToken,
+  IdentifierRole,
+  lookaheadType,
+  lookaheadTypeAndKeyword,
+  match,
+  next,
+  nextTokenStart,
+  nextTokenStartSince,
+  popTypeContext,
+  pushTypeContext,
+} from "../tokenizer";
+import {ContextualKeyword} from "../tokenizer/keywords";
+import {Scope} from "../tokenizer/state";
+import { TokenType as tt} from "../tokenizer/types";
+import {charCodes} from "../util/charcodes";
+import {getNextContextId, input, isFlowEnabled, isTypeScriptEnabled, state} from "./base";
+import {
+  parseCallExpressionArguments,
+  parseExprAtom,
+  parseExpression,
+  parseExprSubscripts,
+  parseFunctionBodyAndFinish,
+  parseIdentifier,
+  parseMaybeAssign,
+  parseMethod,
+  parseObj,
+  parseParenExpression,
+  parsePropertyName,
+} from "./expression";
+import {
+  parseBindingAtom,
+  parseBindingIdentifier,
+  parseBindingList,
+  parseImportedIdentifier,
+} from "./lval";
+import {
+  canInsertSemicolon,
+  eatContextual,
+  expect,
+  expectContextual,
+  hasFollowingLineBreak,
+  hasPrecedingLineBreak,
+  isContextual,
+  isLineTerminator,
+  isLookaheadContextual,
+  semicolon,
+  unexpected,
+} from "./util";
+
+export function parseTopLevel() {
+  parseBlockBody(tt.eof);
+  state.scopes.push(new Scope(0, state.tokens.length, true));
+  if (state.scopeDepth !== 0) {
+    throw new Error(`Invalid scope depth at end of file: ${state.scopeDepth}`);
+  }
+  return new File(state.tokens, state.scopes);
+}
+
+// Parse a single statement.
+//
+// If expecting a statement and finding a slash operator, parse a
+// regular expression literal. This is to handle cases like
+// `if (foo) /blah/.exec(foo)`, where looking at the previous token
+// does not help.
+
+export function parseStatement(declaration) {
+  if (isFlowEnabled) {
+    if (flowTryParseStatement()) {
+      return;
+    }
+  }
+  if (match(tt.at)) {
+    parseDecorators();
+  }
+  parseStatementContent(declaration);
+}
+
+function parseStatementContent(declaration) {
+  if (isTypeScriptEnabled) {
+    if (tsTryParseStatementContent()) {
+      return;
+    }
+  }
+
+  const starttype = state.type;
+
+  // Most types of statements are recognized by the keyword they
+  // start with. Many are trivial to parse, some require a bit of
+  // complexity.
+
+  switch (starttype) {
+    case tt._break:
+    case tt._continue:
+      parseBreakContinueStatement();
+      return;
+    case tt._debugger:
+      parseDebuggerStatement();
+      return;
+    case tt._do:
+      parseDoStatement();
+      return;
+    case tt._for:
+      parseForStatement();
+      return;
+    case tt._function:
+      if (lookaheadType() === tt.dot) break;
+      if (!declaration) unexpected();
+      parseFunctionStatement();
+      return;
+
+    case tt._class:
+      if (!declaration) unexpected();
+      parseClass(true);
+      return;
+
+    case tt._if:
+      parseIfStatement();
+      return;
+    case tt._return:
+      parseReturnStatement();
+      return;
+    case tt._switch:
+      parseSwitchStatement();
+      return;
+    case tt._throw:
+      parseThrowStatement();
+      return;
+    case tt._try:
+      parseTryStatement();
+      return;
+
+    case tt._let:
+    case tt._const:
+      if (!declaration) unexpected(); // NOTE: falls through to _var
+
+    case tt._var:
+      parseVarStatement(starttype !== tt._var);
+      return;
+
+    case tt._while:
+      parseWhileStatement();
+      return;
+    case tt.braceL:
+      parseBlock();
+      return;
+    case tt.semi:
+      parseEmptyStatement();
+      return;
+    case tt._export:
+    case tt._import: {
+      const nextType = lookaheadType();
+      if (nextType === tt.parenL || nextType === tt.dot) {
+        break;
+      }
+      next();
+      if (starttype === tt._import) {
+        parseImport();
+      } else {
+        parseExport();
+      }
+      return;
+    }
+    case tt.name:
+      if (state.contextualKeyword === ContextualKeyword._async) {
+        const functionStart = state.start;
+        // peek ahead and see if next token is a function
+        const snapshot = state.snapshot();
+        next();
+        if (match(tt._function) && !canInsertSemicolon()) {
+          expect(tt._function);
+          parseFunction(functionStart, true);
+          return;
+        } else {
+          state.restoreFromSnapshot(snapshot);
+        }
+      } else if (
+        state.contextualKeyword === ContextualKeyword._using &&
+        !hasFollowingLineBreak() &&
+        // Statements like `using[0]` and `using in foo` aren't actual using
+        // declarations.
+        lookaheadType() === tt.name
+      ) {
+        parseVarStatement(true);
+        return;
+      } else if (startsAwaitUsing()) {
+        expectContextual(ContextualKeyword._await);
+        parseVarStatement(true);
+        return;
+      }
+    default:
+      // Do nothing.
+      break;
+  }
+
+  // If the statement does not start with a statement keyword or a
+  // brace, it's an ExpressionStatement or LabeledStatement. We
+  // simply start parsing an expression, and afterwards, if the
+  // next token is a colon and the expression was a simple
+  // Identifier node, we switch to interpreting it as a label.
+  const initialTokensLength = state.tokens.length;
+  parseExpression();
+  let simpleName = null;
+  if (state.tokens.length === initialTokensLength + 1) {
+    const token = state.tokens[state.tokens.length - 1];
+    if (token.type === tt.name) {
+      simpleName = token.contextualKeyword;
+    }
+  }
+  if (simpleName == null) {
+    semicolon();
+    return;
+  }
+  if (eat(tt.colon)) {
+    parseLabeledStatement();
+  } else {
+    // This was an identifier, so we might want to handle flow/typescript-specific cases.
+    parseIdentifierStatement(simpleName);
+  }
+}
+
+/**
+ * Determine if we're positioned at an `await using` declaration.
+ *
+ * Note that this can happen either in place of a regular variable declaration
+ * or in a loop body, and in both places, there are similar-looking cases where
+ * we need to return false.
+ *
+ * Examples returning true:
+ * await using foo = bar();
+ * for (await using a of b) {}
+ *
+ * Examples returning false:
+ * await using
+ * await using + 1
+ * await using instanceof T
+ * for (await using;;) {}
+ *
+ * For now, we early return if we don't see `await`, then do a simple
+ * backtracking-based lookahead for the `using` and identifier tokens. In the
+ * future, this could be optimized with a character-based approach.
+ */
+function startsAwaitUsing() {
+  if (!isContextual(ContextualKeyword._await)) {
+    return false;
+  }
+  const snapshot = state.snapshot();
+  // await
+  next();
+  if (!isContextual(ContextualKeyword._using) || hasPrecedingLineBreak()) {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  }
+  // using
+  next();
+  if (!match(tt.name) || hasPrecedingLineBreak()) {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  }
+  state.restoreFromSnapshot(snapshot);
+  return true;
+}
+
+export function parseDecorators() {
+  while (match(tt.at)) {
+    parseDecorator();
+  }
+}
+
+function parseDecorator() {
+  next();
+  if (eat(tt.parenL)) {
+    parseExpression();
+    expect(tt.parenR);
+  } else {
+    parseIdentifier();
+    while (eat(tt.dot)) {
+      parseIdentifier();
+    }
+    parseMaybeDecoratorArguments();
+  }
+}
+
+function parseMaybeDecoratorArguments() {
+  if (isTypeScriptEnabled) {
+    tsParseMaybeDecoratorArguments();
+  } else {
+    baseParseMaybeDecoratorArguments();
+  }
+}
+
+export function baseParseMaybeDecoratorArguments() {
+  if (eat(tt.parenL)) {
+    parseCallExpressionArguments();
+  }
+}
+
+function parseBreakContinueStatement() {
+  next();
+  if (!isLineTerminator()) {
+    parseIdentifier();
+    semicolon();
+  }
+}
+
+function parseDebuggerStatement() {
+  next();
+  semicolon();
+}
+
+function parseDoStatement() {
+  next();
+  parseStatement(false);
+  expect(tt._while);
+  parseParenExpression();
+  eat(tt.semi);
+}
+
+function parseForStatement() {
+  state.scopeDepth++;
+  const startTokenIndex = state.tokens.length;
+  parseAmbiguousForStatement();
+  const endTokenIndex = state.tokens.length;
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, false));
+  state.scopeDepth--;
+}
+
+/**
+ * Determine if this token is a `using` declaration (explicit resource
+ * management) as part of a loop.
+ * https://github.com/tc39/proposal-explicit-resource-management
+ */
+function isUsingInLoop() {
+  if (!isContextual(ContextualKeyword._using)) {
+    return false;
+  }
+  // This must be `for (using of`, where `using` is the name of the loop
+  // variable.
+  if (isLookaheadContextual(ContextualKeyword._of)) {
+    return false;
+  }
+  return true;
+}
+
+// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
+// loop is non-trivial. Basically, we have to parse the init `var`
+// statement or expression, disallowing the `in` operator (see
+// the second parameter to `parseExpression`), and then check
+// whether the next token is `in` or `of`. When there is no init
+// part (semicolon immediately after the opening parenthesis), it
+// is a regular `for` loop.
+function parseAmbiguousForStatement() {
+  next();
+
+  let forAwait = false;
+  if (isContextual(ContextualKeyword._await)) {
+    forAwait = true;
+    next();
+  }
+  expect(tt.parenL);
+
+  if (match(tt.semi)) {
+    if (forAwait) {
+      unexpected();
+    }
+    parseFor();
+    return;
+  }
+
+  const isAwaitUsing = startsAwaitUsing();
+  if (isAwaitUsing || match(tt._var) || match(tt._let) || match(tt._const) || isUsingInLoop()) {
+    if (isAwaitUsing) {
+      expectContextual(ContextualKeyword._await);
+    }
+    next();
+    parseVar(true, state.type !== tt._var);
+    if (match(tt._in) || isContextual(ContextualKeyword._of)) {
+      parseForIn(forAwait);
+      return;
+    }
+    parseFor();
+    return;
+  }
+
+  parseExpression(true);
+  if (match(tt._in) || isContextual(ContextualKeyword._of)) {
+    parseForIn(forAwait);
+    return;
+  }
+  if (forAwait) {
+    unexpected();
+  }
+  parseFor();
+}
+
+function parseFunctionStatement() {
+  const functionStart = state.start;
+  next();
+  parseFunction(functionStart, true);
+}
+
+function parseIfStatement() {
+  next();
+  parseParenExpression();
+  parseStatement(false);
+  if (eat(tt._else)) {
+    parseStatement(false);
+  }
+}
+
+function parseReturnStatement() {
+  next();
+
+  // In `return` (and `break`/`continue`), the keywords with
+  // optional arguments, we eagerly look for a semicolon or the
+  // possibility to insert one.
+
+  if (!isLineTerminator()) {
+    parseExpression();
+    semicolon();
+  }
+}
+
+function parseSwitchStatement() {
+  next();
+  parseParenExpression();
+  state.scopeDepth++;
+  const startTokenIndex = state.tokens.length;
+  expect(tt.braceL);
+
+  // Don't bother validation; just go through any sequence of cases, defaults, and statements.
+  while (!match(tt.braceR) && !state.error) {
+    if (match(tt._case) || match(tt._default)) {
+      const isCase = match(tt._case);
+      next();
+      if (isCase) {
+        parseExpression();
+      }
+      expect(tt.colon);
+    } else {
+      parseStatement(true);
+    }
+  }
+  next(); // Closing brace
+  const endTokenIndex = state.tokens.length;
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, false));
+  state.scopeDepth--;
+}
+
+function parseThrowStatement() {
+  next();
+  parseExpression();
+  semicolon();
+}
+
+function parseCatchClauseParam() {
+  parseBindingAtom(true /* isBlockScope */);
+
+  if (isTypeScriptEnabled) {
+    tsTryParseTypeAnnotation();
+  }
+}
+
+function parseTryStatement() {
+  next();
+
+  parseBlock();
+
+  if (match(tt._catch)) {
+    next();
+    let catchBindingStartTokenIndex = null;
+    if (match(tt.parenL)) {
+      state.scopeDepth++;
+      catchBindingStartTokenIndex = state.tokens.length;
+      expect(tt.parenL);
+      parseCatchClauseParam();
+      expect(tt.parenR);
+    }
+    parseBlock();
+    if (catchBindingStartTokenIndex != null) {
+      // We need a special scope for the catch binding which includes the binding itself and the
+      // catch block.
+      const endTokenIndex = state.tokens.length;
+      state.scopes.push(new Scope(catchBindingStartTokenIndex, endTokenIndex, false));
+      state.scopeDepth--;
+    }
+  }
+  if (eat(tt._finally)) {
+    parseBlock();
+  }
+}
+
+export function parseVarStatement(isBlockScope) {
+  next();
+  parseVar(false, isBlockScope);
+  semicolon();
+}
+
+function parseWhileStatement() {
+  next();
+  parseParenExpression();
+  parseStatement(false);
+}
+
+function parseEmptyStatement() {
+  next();
+}
+
+function parseLabeledStatement() {
+  parseStatement(true);
+}
+
+/**
+ * Parse a statement starting with an identifier of the given name. Subclasses match on the name
+ * to handle statements like "declare".
+ */
+function parseIdentifierStatement(contextualKeyword) {
+  if (isTypeScriptEnabled) {
+    tsParseIdentifierStatement(contextualKeyword);
+  } else if (isFlowEnabled) {
+    flowParseIdentifierStatement(contextualKeyword);
+  } else {
+    semicolon();
+  }
+}
+
+// Parse a semicolon-enclosed block of statements.
+export function parseBlock(isFunctionScope = false, contextId = 0) {
+  const startTokenIndex = state.tokens.length;
+  state.scopeDepth++;
+  expect(tt.braceL);
+  if (contextId) {
+    state.tokens[state.tokens.length - 1].contextId = contextId;
+  }
+  parseBlockBody(tt.braceR);
+  if (contextId) {
+    state.tokens[state.tokens.length - 1].contextId = contextId;
+  }
+  const endTokenIndex = state.tokens.length;
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, isFunctionScope));
+  state.scopeDepth--;
+}
+
+export function parseBlockBody(end) {
+  while (!eat(end) && !state.error) {
+    parseStatement(true);
+  }
+}
+
+// Parse a regular `for` loop. The disambiguation code in
+// `parseStatement` will already have parsed the init statement or
+// expression.
+
+function parseFor() {
+  expect(tt.semi);
+  if (!match(tt.semi)) {
+    parseExpression();
+  }
+  expect(tt.semi);
+  if (!match(tt.parenR)) {
+    parseExpression();
+  }
+  expect(tt.parenR);
+  parseStatement(false);
+}
+
+// Parse a `for`/`in` and `for`/`of` loop, which are almost
+// same from parser's perspective.
+
+function parseForIn(forAwait) {
+  if (forAwait) {
+    eatContextual(ContextualKeyword._of);
+  } else {
+    next();
+  }
+  parseExpression();
+  expect(tt.parenR);
+  parseStatement(false);
+}
+
+// Parse a list of variable declarations.
+
+function parseVar(isFor, isBlockScope) {
+  while (true) {
+    parseVarHead(isBlockScope);
+    if (eat(tt.eq)) {
+      const eqIndex = state.tokens.length - 1;
+      parseMaybeAssign(isFor);
+      state.tokens[eqIndex].rhsEndIndex = state.tokens.length;
+    }
+    if (!eat(tt.comma)) {
+      break;
+    }
+  }
+}
+
+function parseVarHead(isBlockScope) {
+  parseBindingAtom(isBlockScope);
+  if (isTypeScriptEnabled) {
+    tsAfterParseVarHead();
+  } else if (isFlowEnabled) {
+    flowAfterParseVarHead();
+  }
+}
+
+// Parse a function declaration or literal (depending on the
+// `isStatement` parameter).
+
+export function parseFunction(
+  functionStart,
+  isStatement,
+  optionalId = false,
+) {
+  if (match(tt.star)) {
+    next();
+  }
+
+  if (isStatement && !optionalId && !match(tt.name) && !match(tt._yield)) {
+    unexpected();
+  }
+
+  let nameScopeStartTokenIndex = null;
+
+  if (match(tt.name)) {
+    // Expression-style functions should limit their name's scope to the function body, so we make
+    // a new function scope to enforce that.
+    if (!isStatement) {
+      nameScopeStartTokenIndex = state.tokens.length;
+      state.scopeDepth++;
+    }
+    parseBindingIdentifier(false);
+  }
+
+  const startTokenIndex = state.tokens.length;
+  state.scopeDepth++;
+  parseFunctionParams();
+  parseFunctionBodyAndFinish(functionStart);
+  const endTokenIndex = state.tokens.length;
+  // In addition to the block scope of the function body, we need a separate function-style scope
+  // that includes the params.
+  state.scopes.push(new Scope(startTokenIndex, endTokenIndex, true));
+  state.scopeDepth--;
+  if (nameScopeStartTokenIndex !== null) {
+    state.scopes.push(new Scope(nameScopeStartTokenIndex, endTokenIndex, true));
+    state.scopeDepth--;
+  }
+}
+
+export function parseFunctionParams(
+  allowModifiers = false,
+  funcContextId = 0,
+) {
+  if (isTypeScriptEnabled) {
+    tsStartParseFunctionParams();
+  } else if (isFlowEnabled) {
+    flowStartParseFunctionParams();
+  }
+
+  expect(tt.parenL);
+  if (funcContextId) {
+    state.tokens[state.tokens.length - 1].contextId = funcContextId;
+  }
+  parseBindingList(
+    tt.parenR,
+    false /* isBlockScope */,
+    false /* allowEmpty */,
+    allowModifiers,
+    funcContextId,
+  );
+  if (funcContextId) {
+    state.tokens[state.tokens.length - 1].contextId = funcContextId;
+  }
+}
+
+// Parse a class declaration or literal (depending on the
+// `isStatement` parameter).
+
+export function parseClass(isStatement, optionalId = false) {
+  // Put a context ID on the class keyword, the open-brace, and the close-brace, so that later
+  // code can easily navigate to meaningful points on the class.
+  const contextId = getNextContextId();
+
+  next();
+  state.tokens[state.tokens.length - 1].contextId = contextId;
+  state.tokens[state.tokens.length - 1].isExpression = !isStatement;
+  // Like with functions, we declare a special "name scope" from the start of the name to the end
+  // of the class, but only with expression-style classes, to represent the fact that the name is
+  // available to the body of the class but not an outer declaration.
+  let nameScopeStartTokenIndex = null;
+  if (!isStatement) {
+    nameScopeStartTokenIndex = state.tokens.length;
+    state.scopeDepth++;
+  }
+  parseClassId(isStatement, optionalId);
+  parseClassSuper();
+  const openBraceIndex = state.tokens.length;
+  parseClassBody(contextId);
+  if (state.error) {
+    return;
+  }
+  state.tokens[openBraceIndex].contextId = contextId;
+  state.tokens[state.tokens.length - 1].contextId = contextId;
+  if (nameScopeStartTokenIndex !== null) {
+    const endTokenIndex = state.tokens.length;
+    state.scopes.push(new Scope(nameScopeStartTokenIndex, endTokenIndex, false));
+    state.scopeDepth--;
+  }
+}
+
+function isClassProperty() {
+  return match(tt.eq) || match(tt.semi) || match(tt.braceR) || match(tt.bang) || match(tt.colon);
+}
+
+function isClassMethod() {
+  return match(tt.parenL) || match(tt.lessThan);
+}
+
+function parseClassBody(classContextId) {
+  expect(tt.braceL);
+
+  while (!eat(tt.braceR) && !state.error) {
+    if (eat(tt.semi)) {
+      continue;
+    }
+
+    if (match(tt.at)) {
+      parseDecorator();
+      continue;
+    }
+    const memberStart = state.start;
+    parseClassMember(memberStart, classContextId);
+  }
+}
+
+function parseClassMember(memberStart, classContextId) {
+  if (isTypeScriptEnabled) {
+    tsParseModifiers([
+      ContextualKeyword._declare,
+      ContextualKeyword._public,
+      ContextualKeyword._protected,
+      ContextualKeyword._private,
+      ContextualKeyword._override,
+    ]);
+  }
+  let isStatic = false;
+  if (match(tt.name) && state.contextualKeyword === ContextualKeyword._static) {
+    parseIdentifier(); // eats 'static'
+    if (isClassMethod()) {
+      parseClassMethod(memberStart, /* isConstructor */ false);
+      return;
+    } else if (isClassProperty()) {
+      parseClassProperty();
+      return;
+    }
+    // otherwise something static
+    state.tokens[state.tokens.length - 1].type = tt._static;
+    isStatic = true;
+
+    if (match(tt.braceL)) {
+      // This is a static block. Mark the word "static" with the class context ID for class element
+      // detection and parse as a regular block.
+      state.tokens[state.tokens.length - 1].contextId = classContextId;
+      parseBlock();
+      return;
+    }
+  }
+
+  parseClassMemberWithIsStatic(memberStart, isStatic, classContextId);
+}
+
+function parseClassMemberWithIsStatic(
+  memberStart,
+  isStatic,
+  classContextId,
+) {
+  if (isTypeScriptEnabled) {
+    if (tsTryParseClassMemberWithIsStatic(isStatic)) {
+      return;
+    }
+  }
+  if (eat(tt.star)) {
+    // a generator
+    parseClassPropertyName(classContextId);
+    parseClassMethod(memberStart, /* isConstructor */ false);
+    return;
+  }
+
+  // Get the identifier name so we can tell if it's actually a keyword like "async", "get", or
+  // "set".
+  parseClassPropertyName(classContextId);
+  let isConstructor = false;
+  const token = state.tokens[state.tokens.length - 1];
+  // We allow "constructor" as either an identifier or a string.
+  if (token.contextualKeyword === ContextualKeyword._constructor) {
+    isConstructor = true;
+  }
+  parsePostMemberNameModifiers();
+
+  if (isClassMethod()) {
+    parseClassMethod(memberStart, isConstructor);
+  } else if (isClassProperty()) {
+    parseClassProperty();
+  } else if (token.contextualKeyword === ContextualKeyword._async && !isLineTerminator()) {
+    state.tokens[state.tokens.length - 1].type = tt._async;
+    // an async method
+    const isGenerator = match(tt.star);
+    if (isGenerator) {
+      next();
+    }
+
+    // The so-called parsed name would have been "async": get the real name.
+    parseClassPropertyName(classContextId);
+    parsePostMemberNameModifiers();
+    parseClassMethod(memberStart, false /* isConstructor */);
+  } else if (
+    (token.contextualKeyword === ContextualKeyword._get ||
+      token.contextualKeyword === ContextualKeyword._set) &&
+    !(isLineTerminator() && match(tt.star))
+  ) {
+    if (token.contextualKeyword === ContextualKeyword._get) {
+      state.tokens[state.tokens.length - 1].type = tt._get;
+    } else {
+      state.tokens[state.tokens.length - 1].type = tt._set;
+    }
+    // `get\n*` is an uninitialized property named 'get' followed by a generator.
+    // a getter or setter
+    // The so-called parsed name would have been "get/set": get the real name.
+    parseClassPropertyName(classContextId);
+    parseClassMethod(memberStart, /* isConstructor */ false);
+  } else if (token.contextualKeyword === ContextualKeyword._accessor && !isLineTerminator()) {
+    parseClassPropertyName(classContextId);
+    parseClassProperty();
+  } else if (isLineTerminator()) {
+    // an uninitialized class property (due to ASI, since we don't otherwise recognize the next token)
+    parseClassProperty();
+  } else {
+    unexpected();
+  }
+}
+
+function parseClassMethod(functionStart, isConstructor) {
+  if (isTypeScriptEnabled) {
+    tsTryParseTypeParameters();
+  } else if (isFlowEnabled) {
+    if (match(tt.lessThan)) {
+      flowParseTypeParameterDeclaration();
+    }
+  }
+  parseMethod(functionStart, isConstructor);
+}
+
+// Return the name of the class property, if it is a simple identifier.
+export function parseClassPropertyName(classContextId) {
+  parsePropertyName(classContextId);
+}
+
+export function parsePostMemberNameModifiers() {
+  if (isTypeScriptEnabled) {
+    const oldIsType = pushTypeContext(0);
+    eat(tt.question);
+    popTypeContext(oldIsType);
+  }
+}
+
+export function parseClassProperty() {
+  if (isTypeScriptEnabled) {
+    eatTypeToken(tt.bang);
+    tsTryParseTypeAnnotation();
+  } else if (isFlowEnabled) {
+    if (match(tt.colon)) {
+      flowParseTypeAnnotation();
+    }
+  }
+
+  if (match(tt.eq)) {
+    const equalsTokenIndex = state.tokens.length;
+    next();
+    parseMaybeAssign();
+    state.tokens[equalsTokenIndex].rhsEndIndex = state.tokens.length;
+  }
+  semicolon();
+}
+
+function parseClassId(isStatement, optionalId = false) {
+  if (
+    isTypeScriptEnabled &&
+    (!isStatement || optionalId) &&
+    isContextual(ContextualKeyword._implements)
+  ) {
+    return;
+  }
+
+  if (match(tt.name)) {
+    parseBindingIdentifier(true);
+  }
+
+  if (isTypeScriptEnabled) {
+    tsTryParseTypeParameters();
+  } else if (isFlowEnabled) {
+    if (match(tt.lessThan)) {
+      flowParseTypeParameterDeclaration();
+    }
+  }
+}
+
+// Returns true if there was a superclass.
+function parseClassSuper() {
+  let hasSuper = false;
+  if (eat(tt._extends)) {
+    parseExprSubscripts();
+    hasSuper = true;
+  } else {
+    hasSuper = false;
+  }
+  if (isTypeScriptEnabled) {
+    tsAfterParseClassSuper(hasSuper);
+  } else if (isFlowEnabled) {
+    flowAfterParseClassSuper(hasSuper);
+  }
+}
+
+// Parses module export declaration.
+
+export function parseExport() {
+  const exportIndex = state.tokens.length - 1;
+  if (isTypeScriptEnabled) {
+    if (tsTryParseExport()) {
+      return;
+    }
+  }
+  // export * from '...'
+  if (shouldParseExportStar()) {
+    parseExportStar();
+  } else if (isExportDefaultSpecifier()) {
+    // export default from
+    parseIdentifier();
+    if (match(tt.comma) && lookaheadType() === tt.star) {
+      expect(tt.comma);
+      expect(tt.star);
+      expectContextual(ContextualKeyword._as);
+      parseIdentifier();
+    } else {
+      parseExportSpecifiersMaybe();
+    }
+    parseExportFrom();
+  } else if (eat(tt._default)) {
+    // export default ...
+    parseExportDefaultExpression();
+  } else if (shouldParseExportDeclaration()) {
+    parseExportDeclaration();
+  } else {
+    // export { x, y as z } [from '...']
+    parseExportSpecifiers();
+    parseExportFrom();
+  }
+  state.tokens[exportIndex].rhsEndIndex = state.tokens.length;
+}
+
+function parseExportDefaultExpression() {
+  if (isTypeScriptEnabled) {
+    if (tsTryParseExportDefaultExpression()) {
+      return;
+    }
+  }
+  if (isFlowEnabled) {
+    if (flowTryParseExportDefaultExpression()) {
+      return;
+    }
+  }
+  const functionStart = state.start;
+  if (eat(tt._function)) {
+    parseFunction(functionStart, true, true);
+  } else if (isContextual(ContextualKeyword._async) && lookaheadType() === tt._function) {
+    // async function declaration
+    eatContextual(ContextualKeyword._async);
+    eat(tt._function);
+    parseFunction(functionStart, true, true);
+  } else if (match(tt._class)) {
+    parseClass(true, true);
+  } else if (match(tt.at)) {
+    parseDecorators();
+    parseClass(true, true);
+  } else {
+    parseMaybeAssign();
+    semicolon();
+  }
+}
+
+function parseExportDeclaration() {
+  if (isTypeScriptEnabled) {
+    tsParseExportDeclaration();
+  } else if (isFlowEnabled) {
+    flowParseExportDeclaration();
+  } else {
+    parseStatement(true);
+  }
+}
+
+function isExportDefaultSpecifier() {
+  if (isTypeScriptEnabled && tsIsDeclarationStart()) {
+    return false;
+  } else if (isFlowEnabled && flowShouldDisallowExportDefaultSpecifier()) {
+    return false;
+  }
+  if (match(tt.name)) {
+    return state.contextualKeyword !== ContextualKeyword._async;
+  }
+
+  if (!match(tt._default)) {
+    return false;
+  }
+
+  const _next = nextTokenStart();
+  const lookahead = lookaheadTypeAndKeyword();
+  const hasFrom =
+    lookahead.type === tt.name && lookahead.contextualKeyword === ContextualKeyword._from;
+  if (lookahead.type === tt.comma) {
+    return true;
+  }
+  // lookahead again when `export default from` is seen
+  if (hasFrom) {
+    const nextAfterFrom = input.charCodeAt(nextTokenStartSince(_next + 4));
+    return nextAfterFrom === charCodes.quotationMark || nextAfterFrom === charCodes.apostrophe;
+  }
+  return false;
+}
+
+function parseExportSpecifiersMaybe() {
+  if (eat(tt.comma)) {
+    parseExportSpecifiers();
+  }
+}
+
+export function parseExportFrom() {
+  if (eatContextual(ContextualKeyword._from)) {
+    parseExprAtom();
+    maybeParseImportAttributes();
+  }
+  semicolon();
+}
+
+function shouldParseExportStar() {
+  if (isFlowEnabled) {
+    return flowShouldParseExportStar();
+  } else {
+    return match(tt.star);
+  }
+}
+
+function parseExportStar() {
+  if (isFlowEnabled) {
+    flowParseExportStar();
+  } else {
+    baseParseExportStar();
+  }
+}
+
+export function baseParseExportStar() {
+  expect(tt.star);
+
+  if (isContextual(ContextualKeyword._as)) {
+    parseExportNamespace();
+  } else {
+    parseExportFrom();
+  }
+}
+
+function parseExportNamespace() {
+  next();
+  state.tokens[state.tokens.length - 1].type = tt._as;
+  parseIdentifier();
+  parseExportSpecifiersMaybe();
+  parseExportFrom();
+}
+
+function shouldParseExportDeclaration() {
+  return (
+    (isTypeScriptEnabled && tsIsDeclarationStart()) ||
+    (isFlowEnabled && flowShouldParseExportDeclaration()) ||
+    state.type === tt._var ||
+    state.type === tt._const ||
+    state.type === tt._let ||
+    state.type === tt._function ||
+    state.type === tt._class ||
+    isContextual(ContextualKeyword._async) ||
+    match(tt.at)
+  );
+}
+
+// Parses a comma-separated list of module exports.
+export function parseExportSpecifiers() {
+  let first = true;
+
+  // export { x, y as z } [from '...']
+  expect(tt.braceL);
+
+  while (!eat(tt.braceR) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      expect(tt.comma);
+      if (eat(tt.braceR)) {
+        break;
+      }
+    }
+    parseExportSpecifier();
+  }
+}
+
+function parseExportSpecifier() {
+  if (isTypeScriptEnabled) {
+    tsParseExportSpecifier();
+    return;
+  }
+  parseIdentifier();
+  state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ExportAccess;
+  if (eatContextual(ContextualKeyword._as)) {
+    parseIdentifier();
+  }
+}
+
+/**
+ * Starting at the `module` token in an import, determine if it was truly an
+ * import reflection token or just looks like one.
+ *
+ * Returns true for:
+ * import module foo from "foo";
+ * import module from from "foo";
+ *
+ * Returns false for:
+ * import module from "foo";
+ * import module, {bar} from "foo";
+ */
+function isImportReflection() {
+  const snapshot = state.snapshot();
+  expectContextual(ContextualKeyword._module);
+  if (eatContextual(ContextualKeyword._from)) {
+    if (isContextual(ContextualKeyword._from)) {
+      state.restoreFromSnapshot(snapshot);
+      return true;
+    } else {
+      state.restoreFromSnapshot(snapshot);
+      return false;
+    }
+  } else if (match(tt.comma)) {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  } else {
+    state.restoreFromSnapshot(snapshot);
+    return true;
+  }
+}
+
+/**
+ * Eat the "module" token from the import reflection proposal.
+ * https://github.com/tc39/proposal-import-reflection
+ */
+function parseMaybeImportReflection() {
+  // isImportReflection does snapshot/restore, so only run it if we see the word
+  // "module".
+  if (isContextual(ContextualKeyword._module) && isImportReflection()) {
+    next();
+  }
+}
+
+// Parses import declaration.
+
+export function parseImport() {
+  if (isTypeScriptEnabled && match(tt.name) && lookaheadType() === tt.eq) {
+    tsParseImportEqualsDeclaration();
+    return;
+  }
+  if (isTypeScriptEnabled && isContextual(ContextualKeyword._type)) {
+    const lookahead = lookaheadTypeAndKeyword();
+    if (lookahead.type === tt.name && lookahead.contextualKeyword !== ContextualKeyword._from) {
+      // One of these `import type` cases:
+      // import type T = require('T');
+      // import type A from 'A';
+      expectContextual(ContextualKeyword._type);
+      if (lookaheadType() === tt.eq) {
+        tsParseImportEqualsDeclaration();
+        return;
+      }
+      // If this is an `import type...from` statement, then we already ate the
+      // type token, so proceed to the regular import parser.
+    } else if (lookahead.type === tt.star || lookahead.type === tt.braceL) {
+      // One of these `import type` cases, in which case we can eat the type token
+      // and proceed as normal:
+      // import type * as A from 'A';
+      // import type {a} from 'A';
+      expectContextual(ContextualKeyword._type);
+    }
+    // Otherwise, we are importing the name "type".
+  }
+
+  // import '...'
+  if (match(tt.string)) {
+    parseExprAtom();
+  } else {
+    parseMaybeImportReflection();
+    parseImportSpecifiers();
+    expectContextual(ContextualKeyword._from);
+    parseExprAtom();
+  }
+  maybeParseImportAttributes();
+  semicolon();
+}
+
+// eslint-disable-next-line no-unused-vars
+function shouldParseDefaultImport() {
+  return match(tt.name);
+}
+
+function parseImportSpecifierLocal() {
+  parseImportedIdentifier();
+}
+
+// Parses a comma-separated list of module imports.
+function parseImportSpecifiers() {
+  if (isFlowEnabled) {
+    flowStartParseImportSpecifiers();
+  }
+
+  let first = true;
+  if (shouldParseDefaultImport()) {
+    // import defaultObj, { x, y as z } from '...'
+    parseImportSpecifierLocal();
+
+    if (!eat(tt.comma)) return;
+  }
+
+  if (match(tt.star)) {
+    next();
+    expectContextual(ContextualKeyword._as);
+
+    parseImportSpecifierLocal();
+
+    return;
+  }
+
+  expect(tt.braceL);
+  while (!eat(tt.braceR) && !state.error) {
+    if (first) {
+      first = false;
+    } else {
+      // Detect an attempt to deep destructure
+      if (eat(tt.colon)) {
+        unexpected(
+          "ES2015 named imports do not destructure. Use another statement for destructuring after the import.",
+        );
+      }
+
+      expect(tt.comma);
+      if (eat(tt.braceR)) {
+        break;
+      }
+    }
+
+    parseImportSpecifier();
+  }
+}
+
+function parseImportSpecifier() {
+  if (isTypeScriptEnabled) {
+    tsParseImportSpecifier();
+    return;
+  }
+  if (isFlowEnabled) {
+    flowParseImportSpecifier();
+    return;
+  }
+  parseImportedIdentifier();
+  if (isContextual(ContextualKeyword._as)) {
+    state.tokens[state.tokens.length - 1].identifierRole = IdentifierRole.ImportAccess;
+    next();
+    parseImportedIdentifier();
+  }
+}
+
+/**
+ * Parse import attributes like `with {type: "json"}`, or the legacy form
+ * `assert {type: "json"}`.
+ *
+ * Import attributes technically have their own syntax, but are always parseable
+ * as a plain JS object, so just do that for simplicity.
+ */
+function maybeParseImportAttributes() {
+  if (match(tt._with) || (isContextual(ContextualKeyword._assert) && !hasPrecedingLineBreak())) {
+    next();
+    parseObj(false, false);
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/parser/traverser/util.js b/node_modules/sucrase/dist/esm/parser/traverser/util.js
new file mode 100644
index 0000000..6a2b2d9
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/traverser/util.js
@@ -0,0 +1,104 @@
+import {eat, finishToken, lookaheadTypeAndKeyword, match, nextTokenStart} from "../tokenizer/index";
+
+import {formatTokenType, TokenType as tt} from "../tokenizer/types";
+import {charCodes} from "../util/charcodes";
+import {input, state} from "./base";
+
+// ## Parser utilities
+
+// Tests whether parsed token is a contextual keyword.
+export function isContextual(contextualKeyword) {
+  return state.contextualKeyword === contextualKeyword;
+}
+
+export function isLookaheadContextual(contextualKeyword) {
+  const l = lookaheadTypeAndKeyword();
+  return l.type === tt.name && l.contextualKeyword === contextualKeyword;
+}
+
+// Consumes contextual keyword if possible.
+export function eatContextual(contextualKeyword) {
+  return state.contextualKeyword === contextualKeyword && eat(tt.name);
+}
+
+// Asserts that following token is given contextual keyword.
+export function expectContextual(contextualKeyword) {
+  if (!eatContextual(contextualKeyword)) {
+    unexpected();
+  }
+}
+
+// Test whether a semicolon can be inserted at the current position.
+export function canInsertSemicolon() {
+  return match(tt.eof) || match(tt.braceR) || hasPrecedingLineBreak();
+}
+
+export function hasPrecedingLineBreak() {
+  const prevToken = state.tokens[state.tokens.length - 1];
+  const lastTokEnd = prevToken ? prevToken.end : 0;
+  for (let i = lastTokEnd; i < state.start; i++) {
+    const code = input.charCodeAt(i);
+    if (
+      code === charCodes.lineFeed ||
+      code === charCodes.carriageReturn ||
+      code === 0x2028 ||
+      code === 0x2029
+    ) {
+      return true;
+    }
+  }
+  return false;
+}
+
+export function hasFollowingLineBreak() {
+  const nextStart = nextTokenStart();
+  for (let i = state.end; i < nextStart; i++) {
+    const code = input.charCodeAt(i);
+    if (
+      code === charCodes.lineFeed ||
+      code === charCodes.carriageReturn ||
+      code === 0x2028 ||
+      code === 0x2029
+    ) {
+      return true;
+    }
+  }
+  return false;
+}
+
+export function isLineTerminator() {
+  return eat(tt.semi) || canInsertSemicolon();
+}
+
+// Consume a semicolon, or, failing that, see if we are allowed to
+// pretend that there is a semicolon at this position.
+export function semicolon() {
+  if (!isLineTerminator()) {
+    unexpected('Unexpected token, expected ";"');
+  }
+}
+
+// Expect a token of a given type. If found, consume it, otherwise,
+// raise an unexpected token error at given pos.
+export function expect(type) {
+  const matched = eat(type);
+  if (!matched) {
+    unexpected(`Unexpected token, expected "${formatTokenType(type)}"`);
+  }
+}
+
+/**
+ * Transition the parser to an error state. All code needs to be written to naturally unwind in this
+ * state, which allows us to backtrack without exceptions and without error plumbing everywhere.
+ */
+export function unexpected(message = "Unexpected token", pos = state.start) {
+  if (state.error) {
+    return;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const err = new SyntaxError(message);
+  err.pos = pos;
+  state.error = err;
+  state.pos = input.length;
+  finishToken(tt.eof);
+}
diff --git a/node_modules/sucrase/dist/esm/parser/util/charcodes.js b/node_modules/sucrase/dist/esm/parser/util/charcodes.js
new file mode 100644
index 0000000..36ea667
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/util/charcodes.js
@@ -0,0 +1,115 @@
+export var charCodes; (function (charCodes) {
+  const backSpace = 8; charCodes[charCodes["backSpace"] = backSpace] = "backSpace";
+  const lineFeed = 10; charCodes[charCodes["lineFeed"] = lineFeed] = "lineFeed"; //  '\n'
+  const tab = 9; charCodes[charCodes["tab"] = tab] = "tab"; //  '\t'
+  const carriageReturn = 13; charCodes[charCodes["carriageReturn"] = carriageReturn] = "carriageReturn"; //  '\r'
+  const shiftOut = 14; charCodes[charCodes["shiftOut"] = shiftOut] = "shiftOut";
+  const space = 32; charCodes[charCodes["space"] = space] = "space";
+  const exclamationMark = 33; charCodes[charCodes["exclamationMark"] = exclamationMark] = "exclamationMark"; //  '!'
+  const quotationMark = 34; charCodes[charCodes["quotationMark"] = quotationMark] = "quotationMark"; //  '"'
+  const numberSign = 35; charCodes[charCodes["numberSign"] = numberSign] = "numberSign"; //  '#'
+  const dollarSign = 36; charCodes[charCodes["dollarSign"] = dollarSign] = "dollarSign"; //  '$'
+  const percentSign = 37; charCodes[charCodes["percentSign"] = percentSign] = "percentSign"; //  '%'
+  const ampersand = 38; charCodes[charCodes["ampersand"] = ampersand] = "ampersand"; //  '&'
+  const apostrophe = 39; charCodes[charCodes["apostrophe"] = apostrophe] = "apostrophe"; //  '''
+  const leftParenthesis = 40; charCodes[charCodes["leftParenthesis"] = leftParenthesis] = "leftParenthesis"; //  '('
+  const rightParenthesis = 41; charCodes[charCodes["rightParenthesis"] = rightParenthesis] = "rightParenthesis"; //  ')'
+  const asterisk = 42; charCodes[charCodes["asterisk"] = asterisk] = "asterisk"; //  '*'
+  const plusSign = 43; charCodes[charCodes["plusSign"] = plusSign] = "plusSign"; //  '+'
+  const comma = 44; charCodes[charCodes["comma"] = comma] = "comma"; //  ','
+  const dash = 45; charCodes[charCodes["dash"] = dash] = "dash"; //  '-'
+  const dot = 46; charCodes[charCodes["dot"] = dot] = "dot"; //  '.'
+  const slash = 47; charCodes[charCodes["slash"] = slash] = "slash"; //  '/'
+  const digit0 = 48; charCodes[charCodes["digit0"] = digit0] = "digit0"; //  '0'
+  const digit1 = 49; charCodes[charCodes["digit1"] = digit1] = "digit1"; //  '1'
+  const digit2 = 50; charCodes[charCodes["digit2"] = digit2] = "digit2"; //  '2'
+  const digit3 = 51; charCodes[charCodes["digit3"] = digit3] = "digit3"; //  '3'
+  const digit4 = 52; charCodes[charCodes["digit4"] = digit4] = "digit4"; //  '4'
+  const digit5 = 53; charCodes[charCodes["digit5"] = digit5] = "digit5"; //  '5'
+  const digit6 = 54; charCodes[charCodes["digit6"] = digit6] = "digit6"; //  '6'
+  const digit7 = 55; charCodes[charCodes["digit7"] = digit7] = "digit7"; //  '7'
+  const digit8 = 56; charCodes[charCodes["digit8"] = digit8] = "digit8"; //  '8'
+  const digit9 = 57; charCodes[charCodes["digit9"] = digit9] = "digit9"; //  '9'
+  const colon = 58; charCodes[charCodes["colon"] = colon] = "colon"; //  ':'
+  const semicolon = 59; charCodes[charCodes["semicolon"] = semicolon] = "semicolon"; //  ';'
+  const lessThan = 60; charCodes[charCodes["lessThan"] = lessThan] = "lessThan"; //  '<'
+  const equalsTo = 61; charCodes[charCodes["equalsTo"] = equalsTo] = "equalsTo"; //  '='
+  const greaterThan = 62; charCodes[charCodes["greaterThan"] = greaterThan] = "greaterThan"; //  '>'
+  const questionMark = 63; charCodes[charCodes["questionMark"] = questionMark] = "questionMark"; //  '?'
+  const atSign = 64; charCodes[charCodes["atSign"] = atSign] = "atSign"; //  '@'
+  const uppercaseA = 65; charCodes[charCodes["uppercaseA"] = uppercaseA] = "uppercaseA"; //  'A'
+  const uppercaseB = 66; charCodes[charCodes["uppercaseB"] = uppercaseB] = "uppercaseB"; //  'B'
+  const uppercaseC = 67; charCodes[charCodes["uppercaseC"] = uppercaseC] = "uppercaseC"; //  'C'
+  const uppercaseD = 68; charCodes[charCodes["uppercaseD"] = uppercaseD] = "uppercaseD"; //  'D'
+  const uppercaseE = 69; charCodes[charCodes["uppercaseE"] = uppercaseE] = "uppercaseE"; //  'E'
+  const uppercaseF = 70; charCodes[charCodes["uppercaseF"] = uppercaseF] = "uppercaseF"; //  'F'
+  const uppercaseG = 71; charCodes[charCodes["uppercaseG"] = uppercaseG] = "uppercaseG"; //  'G'
+  const uppercaseH = 72; charCodes[charCodes["uppercaseH"] = uppercaseH] = "uppercaseH"; //  'H'
+  const uppercaseI = 73; charCodes[charCodes["uppercaseI"] = uppercaseI] = "uppercaseI"; //  'I'
+  const uppercaseJ = 74; charCodes[charCodes["uppercaseJ"] = uppercaseJ] = "uppercaseJ"; //  'J'
+  const uppercaseK = 75; charCodes[charCodes["uppercaseK"] = uppercaseK] = "uppercaseK"; //  'K'
+  const uppercaseL = 76; charCodes[charCodes["uppercaseL"] = uppercaseL] = "uppercaseL"; //  'L'
+  const uppercaseM = 77; charCodes[charCodes["uppercaseM"] = uppercaseM] = "uppercaseM"; //  'M'
+  const uppercaseN = 78; charCodes[charCodes["uppercaseN"] = uppercaseN] = "uppercaseN"; //  'N'
+  const uppercaseO = 79; charCodes[charCodes["uppercaseO"] = uppercaseO] = "uppercaseO"; //  'O'
+  const uppercaseP = 80; charCodes[charCodes["uppercaseP"] = uppercaseP] = "uppercaseP"; //  'P'
+  const uppercaseQ = 81; charCodes[charCodes["uppercaseQ"] = uppercaseQ] = "uppercaseQ"; //  'Q'
+  const uppercaseR = 82; charCodes[charCodes["uppercaseR"] = uppercaseR] = "uppercaseR"; //  'R'
+  const uppercaseS = 83; charCodes[charCodes["uppercaseS"] = uppercaseS] = "uppercaseS"; //  'S'
+  const uppercaseT = 84; charCodes[charCodes["uppercaseT"] = uppercaseT] = "uppercaseT"; //  'T'
+  const uppercaseU = 85; charCodes[charCodes["uppercaseU"] = uppercaseU] = "uppercaseU"; //  'U'
+  const uppercaseV = 86; charCodes[charCodes["uppercaseV"] = uppercaseV] = "uppercaseV"; //  'V'
+  const uppercaseW = 87; charCodes[charCodes["uppercaseW"] = uppercaseW] = "uppercaseW"; //  'W'
+  const uppercaseX = 88; charCodes[charCodes["uppercaseX"] = uppercaseX] = "uppercaseX"; //  'X'
+  const uppercaseY = 89; charCodes[charCodes["uppercaseY"] = uppercaseY] = "uppercaseY"; //  'Y'
+  const uppercaseZ = 90; charCodes[charCodes["uppercaseZ"] = uppercaseZ] = "uppercaseZ"; //  'Z'
+  const leftSquareBracket = 91; charCodes[charCodes["leftSquareBracket"] = leftSquareBracket] = "leftSquareBracket"; //  '['
+  const backslash = 92; charCodes[charCodes["backslash"] = backslash] = "backslash"; //  '\    '
+  const rightSquareBracket = 93; charCodes[charCodes["rightSquareBracket"] = rightSquareBracket] = "rightSquareBracket"; //  ']'
+  const caret = 94; charCodes[charCodes["caret"] = caret] = "caret"; //  '^'
+  const underscore = 95; charCodes[charCodes["underscore"] = underscore] = "underscore"; //  '_'
+  const graveAccent = 96; charCodes[charCodes["graveAccent"] = graveAccent] = "graveAccent"; //  '`'
+  const lowercaseA = 97; charCodes[charCodes["lowercaseA"] = lowercaseA] = "lowercaseA"; //  'a'
+  const lowercaseB = 98; charCodes[charCodes["lowercaseB"] = lowercaseB] = "lowercaseB"; //  'b'
+  const lowercaseC = 99; charCodes[charCodes["lowercaseC"] = lowercaseC] = "lowercaseC"; //  'c'
+  const lowercaseD = 100; charCodes[charCodes["lowercaseD"] = lowercaseD] = "lowercaseD"; //  'd'
+  const lowercaseE = 101; charCodes[charCodes["lowercaseE"] = lowercaseE] = "lowercaseE"; //  'e'
+  const lowercaseF = 102; charCodes[charCodes["lowercaseF"] = lowercaseF] = "lowercaseF"; //  'f'
+  const lowercaseG = 103; charCodes[charCodes["lowercaseG"] = lowercaseG] = "lowercaseG"; //  'g'
+  const lowercaseH = 104; charCodes[charCodes["lowercaseH"] = lowercaseH] = "lowercaseH"; //  'h'
+  const lowercaseI = 105; charCodes[charCodes["lowercaseI"] = lowercaseI] = "lowercaseI"; //  'i'
+  const lowercaseJ = 106; charCodes[charCodes["lowercaseJ"] = lowercaseJ] = "lowercaseJ"; //  'j'
+  const lowercaseK = 107; charCodes[charCodes["lowercaseK"] = lowercaseK] = "lowercaseK"; //  'k'
+  const lowercaseL = 108; charCodes[charCodes["lowercaseL"] = lowercaseL] = "lowercaseL"; //  'l'
+  const lowercaseM = 109; charCodes[charCodes["lowercaseM"] = lowercaseM] = "lowercaseM"; //  'm'
+  const lowercaseN = 110; charCodes[charCodes["lowercaseN"] = lowercaseN] = "lowercaseN"; //  'n'
+  const lowercaseO = 111; charCodes[charCodes["lowercaseO"] = lowercaseO] = "lowercaseO"; //  'o'
+  const lowercaseP = 112; charCodes[charCodes["lowercaseP"] = lowercaseP] = "lowercaseP"; //  'p'
+  const lowercaseQ = 113; charCodes[charCodes["lowercaseQ"] = lowercaseQ] = "lowercaseQ"; //  'q'
+  const lowercaseR = 114; charCodes[charCodes["lowercaseR"] = lowercaseR] = "lowercaseR"; //  'r'
+  const lowercaseS = 115; charCodes[charCodes["lowercaseS"] = lowercaseS] = "lowercaseS"; //  's'
+  const lowercaseT = 116; charCodes[charCodes["lowercaseT"] = lowercaseT] = "lowercaseT"; //  't'
+  const lowercaseU = 117; charCodes[charCodes["lowercaseU"] = lowercaseU] = "lowercaseU"; //  'u'
+  const lowercaseV = 118; charCodes[charCodes["lowercaseV"] = lowercaseV] = "lowercaseV"; //  'v'
+  const lowercaseW = 119; charCodes[charCodes["lowercaseW"] = lowercaseW] = "lowercaseW"; //  'w'
+  const lowercaseX = 120; charCodes[charCodes["lowercaseX"] = lowercaseX] = "lowercaseX"; //  'x'
+  const lowercaseY = 121; charCodes[charCodes["lowercaseY"] = lowercaseY] = "lowercaseY"; //  'y'
+  const lowercaseZ = 122; charCodes[charCodes["lowercaseZ"] = lowercaseZ] = "lowercaseZ"; //  'z'
+  const leftCurlyBrace = 123; charCodes[charCodes["leftCurlyBrace"] = leftCurlyBrace] = "leftCurlyBrace"; //  '{'
+  const verticalBar = 124; charCodes[charCodes["verticalBar"] = verticalBar] = "verticalBar"; //  '|'
+  const rightCurlyBrace = 125; charCodes[charCodes["rightCurlyBrace"] = rightCurlyBrace] = "rightCurlyBrace"; //  '}'
+  const tilde = 126; charCodes[charCodes["tilde"] = tilde] = "tilde"; //  '~'
+  const nonBreakingSpace = 160; charCodes[charCodes["nonBreakingSpace"] = nonBreakingSpace] = "nonBreakingSpace";
+  // eslint-disable-next-line no-irregular-whitespace
+  const oghamSpaceMark = 5760; charCodes[charCodes["oghamSpaceMark"] = oghamSpaceMark] = "oghamSpaceMark"; // ' '
+  const lineSeparator = 8232; charCodes[charCodes["lineSeparator"] = lineSeparator] = "lineSeparator";
+  const paragraphSeparator = 8233; charCodes[charCodes["paragraphSeparator"] = paragraphSeparator] = "paragraphSeparator";
+})(charCodes || (charCodes = {}));
+
+export function isDigit(code) {
+  return (
+    (code >= charCodes.digit0 && code <= charCodes.digit9) ||
+    (code >= charCodes.lowercaseA && code <= charCodes.lowercaseF) ||
+    (code >= charCodes.uppercaseA && code <= charCodes.uppercaseF)
+  );
+}
diff --git a/node_modules/sucrase/dist/esm/parser/util/identifier.js b/node_modules/sucrase/dist/esm/parser/util/identifier.js
new file mode 100644
index 0000000..33a6bb1
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/util/identifier.js
@@ -0,0 +1,34 @@
+import {charCodes} from "./charcodes";
+import {WHITESPACE_CHARS} from "./whitespace";
+
+function computeIsIdentifierChar(code) {
+  if (code < 48) return code === 36;
+  if (code < 58) return true;
+  if (code < 65) return false;
+  if (code < 91) return true;
+  if (code < 97) return code === 95;
+  if (code < 123) return true;
+  if (code < 128) return false;
+  throw new Error("Should not be called with non-ASCII char code.");
+}
+
+export const IS_IDENTIFIER_CHAR = new Uint8Array(65536);
+for (let i = 0; i < 128; i++) {
+  IS_IDENTIFIER_CHAR[i] = computeIsIdentifierChar(i) ? 1 : 0;
+}
+for (let i = 128; i < 65536; i++) {
+  IS_IDENTIFIER_CHAR[i] = 1;
+}
+// Aside from whitespace and newlines, all characters outside the ASCII space are either
+// identifier characters or invalid. Since we're not performing code validation, we can just
+// treat all invalid characters as identifier characters.
+for (const whitespaceChar of WHITESPACE_CHARS) {
+  IS_IDENTIFIER_CHAR[whitespaceChar] = 0;
+}
+IS_IDENTIFIER_CHAR[0x2028] = 0;
+IS_IDENTIFIER_CHAR[0x2029] = 0;
+
+export const IS_IDENTIFIER_START = IS_IDENTIFIER_CHAR.slice();
+for (let numChar = charCodes.digit0; numChar <= charCodes.digit9; numChar++) {
+  IS_IDENTIFIER_START[numChar] = 0;
+}
diff --git a/node_modules/sucrase/dist/esm/parser/util/whitespace.js b/node_modules/sucrase/dist/esm/parser/util/whitespace.js
new file mode 100644
index 0000000..303b8a6
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/parser/util/whitespace.js
@@ -0,0 +1,33 @@
+import {charCodes} from "./charcodes";
+
+// https://tc39.github.io/ecma262/#sec-white-space
+export const WHITESPACE_CHARS = [
+  0x0009,
+  0x000b,
+  0x000c,
+  charCodes.space,
+  charCodes.nonBreakingSpace,
+  charCodes.oghamSpaceMark,
+  0x2000, // EN QUAD
+  0x2001, // EM QUAD
+  0x2002, // EN SPACE
+  0x2003, // EM SPACE
+  0x2004, // THREE-PER-EM SPACE
+  0x2005, // FOUR-PER-EM SPACE
+  0x2006, // SIX-PER-EM SPACE
+  0x2007, // FIGURE SPACE
+  0x2008, // PUNCTUATION SPACE
+  0x2009, // THIN SPACE
+  0x200a, // HAIR SPACE
+  0x202f, // NARROW NO-BREAK SPACE
+  0x205f, // MEDIUM MATHEMATICAL SPACE
+  0x3000, // IDEOGRAPHIC SPACE
+  0xfeff, // ZERO WIDTH NO-BREAK SPACE
+];
+
+export const skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;
+
+export const IS_WHITESPACE = new Uint8Array(65536);
+for (const char of WHITESPACE_CHARS) {
+  IS_WHITESPACE[char] = 1;
+}
diff --git a/node_modules/sucrase/dist/esm/register.js b/node_modules/sucrase/dist/esm/register.js
new file mode 100644
index 0000000..ca30cab
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/register.js
@@ -0,0 +1,88 @@
+import * as pirates from "pirates";
+
+import { transform} from "./index";
+
+
+
+
+
+
+
+
+export function addHook(
+  extension,
+  sucraseOptions,
+  hookOptions,
+) {
+  let mergedSucraseOptions = sucraseOptions;
+  const sucraseOptionsEnvJSON = process.env.SUCRASE_OPTIONS;
+  if (sucraseOptionsEnvJSON) {
+    mergedSucraseOptions = {...mergedSucraseOptions, ...JSON.parse(sucraseOptionsEnvJSON)};
+  }
+  return pirates.addHook(
+    (code, filePath) => {
+      const {code: transformedCode, sourceMap} = transform(code, {
+        ...mergedSucraseOptions,
+        sourceMapOptions: {compiledFilename: filePath},
+        filePath,
+      });
+      const mapBase64 = Buffer.from(JSON.stringify(sourceMap)).toString("base64");
+      const suffix = `//# sourceMappingURL=data:application/json;charset=utf-8;base64,${mapBase64}`;
+      return `${transformedCode}\n${suffix}`;
+    },
+    {...hookOptions, exts: [extension]},
+  );
+}
+
+export function registerJS(hookOptions) {
+  return addHook(".js", {transforms: ["imports", "flow", "jsx"]}, hookOptions);
+}
+
+export function registerJSX(hookOptions) {
+  return addHook(".jsx", {transforms: ["imports", "flow", "jsx"]}, hookOptions);
+}
+
+export function registerTS(hookOptions) {
+  return addHook(".ts", {transforms: ["imports", "typescript"]}, hookOptions);
+}
+
+export function registerTSX(hookOptions) {
+  return addHook(".tsx", {transforms: ["imports", "typescript", "jsx"]}, hookOptions);
+}
+
+export function registerTSLegacyModuleInterop(hookOptions) {
+  return addHook(
+    ".ts",
+    {
+      transforms: ["imports", "typescript"],
+      enableLegacyTypeScriptModuleInterop: true,
+    },
+    hookOptions,
+  );
+}
+
+export function registerTSXLegacyModuleInterop(hookOptions) {
+  return addHook(
+    ".tsx",
+    {
+      transforms: ["imports", "typescript", "jsx"],
+      enableLegacyTypeScriptModuleInterop: true,
+    },
+    hookOptions,
+  );
+}
+
+export function registerAll(hookOptions) {
+  const reverts = [
+    registerJS(hookOptions),
+    registerJSX(hookOptions),
+    registerTS(hookOptions),
+    registerTSX(hookOptions),
+  ];
+
+  return () => {
+    for (const fn of reverts) {
+      fn();
+    }
+  };
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/CJSImportTransformer.js b/node_modules/sucrase/dist/esm/transformers/CJSImportTransformer.js
new file mode 100644
index 0000000..78cf896
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/CJSImportTransformer.js
@@ -0,0 +1,916 @@
+
+
+
+import {IdentifierRole, isDeclaration, isObjectShorthandDeclaration} from "../parser/tokenizer";
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import elideImportEquals from "../util/elideImportEquals";
+import getDeclarationInfo, {
+
+  EMPTY_DECLARATION_INFO,
+} from "../util/getDeclarationInfo";
+import getImportExportSpecifierInfo from "../util/getImportExportSpecifierInfo";
+import isExportFrom from "../util/isExportFrom";
+import {removeMaybeImportAttributes} from "../util/removeMaybeImportAttributes";
+import shouldElideDefaultExport from "../util/shouldElideDefaultExport";
+
+
+import Transformer from "./Transformer";
+
+/**
+ * Class for editing import statements when we are transforming to commonjs.
+ */
+export default class CJSImportTransformer extends Transformer {
+   __init() {this.hadExport = false}
+   __init2() {this.hadNamedExport = false}
+   __init3() {this.hadDefaultExport = false}
+  
+
+  constructor(
+     rootTransformer,
+     tokens,
+     importProcessor,
+     nameManager,
+     helperManager,
+     reactHotLoaderTransformer,
+     enableLegacyBabel5ModuleInterop,
+     enableLegacyTypeScriptModuleInterop,
+     isTypeScriptTransformEnabled,
+     isFlowTransformEnabled,
+     preserveDynamicImport,
+     keepUnusedImports,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.importProcessor = importProcessor;this.nameManager = nameManager;this.helperManager = helperManager;this.reactHotLoaderTransformer = reactHotLoaderTransformer;this.enableLegacyBabel5ModuleInterop = enableLegacyBabel5ModuleInterop;this.enableLegacyTypeScriptModuleInterop = enableLegacyTypeScriptModuleInterop;this.isTypeScriptTransformEnabled = isTypeScriptTransformEnabled;this.isFlowTransformEnabled = isFlowTransformEnabled;this.preserveDynamicImport = preserveDynamicImport;this.keepUnusedImports = keepUnusedImports;CJSImportTransformer.prototype.__init.call(this);CJSImportTransformer.prototype.__init2.call(this);CJSImportTransformer.prototype.__init3.call(this);;
+    this.declarationInfo = isTypeScriptTransformEnabled
+      ? getDeclarationInfo(tokens)
+      : EMPTY_DECLARATION_INFO;
+  }
+
+  getPrefixCode() {
+    let prefix = "";
+    if (this.hadExport) {
+      prefix += 'Object.defineProperty(exports, "__esModule", {value: true});';
+    }
+    return prefix;
+  }
+
+  getSuffixCode() {
+    if (this.enableLegacyBabel5ModuleInterop && this.hadDefaultExport && !this.hadNamedExport) {
+      return "\nmodule.exports = exports.default;\n";
+    }
+    return "";
+  }
+
+  process() {
+    // TypeScript `import foo = require('foo');` should always just be translated to plain require.
+    if (this.tokens.matches3(tt._import, tt.name, tt.eq)) {
+      return this.processImportEquals();
+    }
+    if (this.tokens.matches1(tt._import)) {
+      this.processImport();
+      return true;
+    }
+    if (this.tokens.matches2(tt._export, tt.eq)) {
+      this.tokens.replaceToken("module.exports");
+      return true;
+    }
+    if (this.tokens.matches1(tt._export) && !this.tokens.currentToken().isType) {
+      this.hadExport = true;
+      return this.processExport();
+    }
+    if (this.tokens.matches2(tt.name, tt.postIncDec)) {
+      // Fall through to normal identifier matching if this doesn't apply.
+      if (this.processPostIncDec()) {
+        return true;
+      }
+    }
+    if (this.tokens.matches1(tt.name) || this.tokens.matches1(tt.jsxName)) {
+      return this.processIdentifier();
+    }
+    if (this.tokens.matches1(tt.eq)) {
+      return this.processAssignment();
+    }
+    if (this.tokens.matches1(tt.assign)) {
+      return this.processComplexAssignment();
+    }
+    if (this.tokens.matches1(tt.preIncDec)) {
+      return this.processPreIncDec();
+    }
+    return false;
+  }
+
+   processImportEquals() {
+    const importName = this.tokens.identifierNameAtIndex(this.tokens.currentIndex() + 1);
+    if (this.importProcessor.shouldAutomaticallyElideImportedName(importName)) {
+      // If this name is only used as a type, elide the whole import.
+      elideImportEquals(this.tokens);
+    } else {
+      // Otherwise, switch `import` to `const`.
+      this.tokens.replaceToken("const");
+    }
+    return true;
+  }
+
+  /**
+   * Transform this:
+   * import foo, {bar} from 'baz';
+   * into
+   * var _baz = require('baz'); var _baz2 = _interopRequireDefault(_baz);
+   *
+   * The import code was already generated in the import preprocessing step, so
+   * we just need to look it up.
+   */
+   processImport() {
+    if (this.tokens.matches2(tt._import, tt.parenL)) {
+      if (this.preserveDynamicImport) {
+        // Bail out, only making progress for this one token.
+        this.tokens.copyToken();
+        return;
+      }
+      const requireWrapper = this.enableLegacyTypeScriptModuleInterop
+        ? ""
+        : `${this.helperManager.getHelperName("interopRequireWildcard")}(`;
+      this.tokens.replaceToken(`Promise.resolve().then(() => ${requireWrapper}require`);
+      const contextId = this.tokens.currentToken().contextId;
+      if (contextId == null) {
+        throw new Error("Expected context ID on dynamic import invocation.");
+      }
+      this.tokens.copyToken();
+      while (!this.tokens.matchesContextIdAndLabel(tt.parenR, contextId)) {
+        this.rootTransformer.processToken();
+      }
+      this.tokens.replaceToken(requireWrapper ? ")))" : "))");
+      return;
+    }
+
+    const shouldElideImport = this.removeImportAndDetectIfShouldElide();
+    if (shouldElideImport) {
+      this.tokens.removeToken();
+    } else {
+      const path = this.tokens.stringValue();
+      this.tokens.replaceTokenTrimmingLeftWhitespace(this.importProcessor.claimImportCode(path));
+      this.tokens.appendCode(this.importProcessor.claimImportCode(path));
+    }
+    removeMaybeImportAttributes(this.tokens);
+    if (this.tokens.matches1(tt.semi)) {
+      this.tokens.removeToken();
+    }
+  }
+
+  /**
+   * Erase this import (since any CJS output would be completely different), and
+   * return true if this import is should be elided due to being a type-only
+   * import. Such imports will not be emitted at all to avoid side effects.
+   *
+   * Import elision only happens with the TypeScript or Flow transforms enabled.
+   *
+   * TODO: This function has some awkward overlap with
+   *  CJSImportProcessor.pruneTypeOnlyImports , and the two should be unified.
+   *  That function handles TypeScript implicit import name elision, and removes
+   *  an import if all typical imported names (without `type`) are removed due
+   *  to being type-only imports. This function handles Flow import removal and
+   *  properly distinguishes `import 'foo'` from `import {} from 'foo'` for TS
+   *  purposes.
+   *
+   * The position should end at the import string.
+   */
+   removeImportAndDetectIfShouldElide() {
+    this.tokens.removeInitialToken();
+    if (
+      this.tokens.matchesContextual(ContextualKeyword._type) &&
+      !this.tokens.matches1AtIndex(this.tokens.currentIndex() + 1, tt.comma) &&
+      !this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._from)
+    ) {
+      // This is an "import type" statement, so exit early.
+      this.removeRemainingImport();
+      return true;
+    }
+
+    if (this.tokens.matches1(tt.name) || this.tokens.matches1(tt.star)) {
+      // We have a default import or namespace import, so there must be some
+      // non-type import.
+      this.removeRemainingImport();
+      return false;
+    }
+
+    if (this.tokens.matches1(tt.string)) {
+      // This is a bare import, so we should proceed with the import.
+      return false;
+    }
+
+    let foundNonTypeImport = false;
+    let foundAnyNamedImport = false;
+    while (!this.tokens.matches1(tt.string)) {
+      // Check if any named imports are of the form "foo" or "foo as bar", with
+      // no leading "type".
+      if (
+        (!foundNonTypeImport && this.tokens.matches1(tt.braceL)) ||
+        this.tokens.matches1(tt.comma)
+      ) {
+        this.tokens.removeToken();
+        if (!this.tokens.matches1(tt.braceR)) {
+          foundAnyNamedImport = true;
+        }
+        if (
+          this.tokens.matches2(tt.name, tt.comma) ||
+          this.tokens.matches2(tt.name, tt.braceR) ||
+          this.tokens.matches4(tt.name, tt.name, tt.name, tt.comma) ||
+          this.tokens.matches4(tt.name, tt.name, tt.name, tt.braceR)
+        ) {
+          foundNonTypeImport = true;
+        }
+      }
+      this.tokens.removeToken();
+    }
+    if (this.keepUnusedImports) {
+      return false;
+    }
+    if (this.isTypeScriptTransformEnabled) {
+      return !foundNonTypeImport;
+    } else if (this.isFlowTransformEnabled) {
+      // In Flow, unlike TS, `import {} from 'foo';` preserves the import.
+      return foundAnyNamedImport && !foundNonTypeImport;
+    } else {
+      return false;
+    }
+  }
+
+   removeRemainingImport() {
+    while (!this.tokens.matches1(tt.string)) {
+      this.tokens.removeToken();
+    }
+  }
+
+   processIdentifier() {
+    const token = this.tokens.currentToken();
+    if (token.shadowsGlobal) {
+      return false;
+    }
+
+    if (token.identifierRole === IdentifierRole.ObjectShorthand) {
+      return this.processObjectShorthand();
+    }
+
+    if (token.identifierRole !== IdentifierRole.Access) {
+      return false;
+    }
+    const replacement = this.importProcessor.getIdentifierReplacement(
+      this.tokens.identifierNameForToken(token),
+    );
+    if (!replacement) {
+      return false;
+    }
+    // Tolerate any number of closing parens while looking for an opening paren
+    // that indicates a function call.
+    let possibleOpenParenIndex = this.tokens.currentIndex() + 1;
+    while (
+      possibleOpenParenIndex < this.tokens.tokens.length &&
+      this.tokens.tokens[possibleOpenParenIndex].type === tt.parenR
+    ) {
+      possibleOpenParenIndex++;
+    }
+    // Avoid treating imported functions as methods of their `exports` object
+    // by using `(0, f)` when the identifier is in a paren expression. Else
+    // use `Function.prototype.call` when the identifier is a guaranteed
+    // function call. When using `call`, pass undefined as the context.
+    if (this.tokens.tokens[possibleOpenParenIndex].type === tt.parenL) {
+      if (
+        this.tokens.tokenAtRelativeIndex(1).type === tt.parenL &&
+        this.tokens.tokenAtRelativeIndex(-1).type !== tt._new
+      ) {
+        this.tokens.replaceToken(`${replacement}.call(void 0, `);
+        // Remove the old paren.
+        this.tokens.removeToken();
+        // Balance out the new paren.
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(tt.parenR);
+      } else {
+        // See here: http://2ality.com/2015/12/references.html
+        this.tokens.replaceToken(`(0, ${replacement})`);
+      }
+    } else {
+      this.tokens.replaceToken(replacement);
+    }
+    return true;
+  }
+
+  processObjectShorthand() {
+    const identifier = this.tokens.identifierName();
+    const replacement = this.importProcessor.getIdentifierReplacement(identifier);
+    if (!replacement) {
+      return false;
+    }
+    this.tokens.replaceToken(`${identifier}: ${replacement}`);
+    return true;
+  }
+
+  processExport() {
+    if (
+      this.tokens.matches2(tt._export, tt._enum) ||
+      this.tokens.matches3(tt._export, tt._const, tt._enum)
+    ) {
+      this.hadNamedExport = true;
+      // Let the TypeScript transform handle it.
+      return false;
+    }
+    if (this.tokens.matches2(tt._export, tt._default)) {
+      if (this.tokens.matches3(tt._export, tt._default, tt._enum)) {
+        this.hadDefaultExport = true;
+        // Flow export default enums need some special handling, so handle them
+        // in that tranform rather than this one.
+        return false;
+      }
+      this.processExportDefault();
+      return true;
+    } else if (this.tokens.matches2(tt._export, tt.braceL)) {
+      this.processExportBindings();
+      return true;
+    } else if (
+      this.tokens.matches2(tt._export, tt.name) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._type)
+    ) {
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      if (this.tokens.matches1(tt.braceL)) {
+        while (!this.tokens.matches1(tt.braceR)) {
+          this.tokens.removeToken();
+        }
+        this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(tt._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
+      }
+      // Remove type re-export `... } from './T'`
+      if (
+        this.tokens.matchesContextual(ContextualKeyword._from) &&
+        this.tokens.matches1AtIndex(this.tokens.currentIndex() + 1, tt.string)
+      ) {
+        this.tokens.removeToken();
+        this.tokens.removeToken();
+        removeMaybeImportAttributes(this.tokens);
+      }
+      return true;
+    }
+    this.hadNamedExport = true;
+    if (
+      this.tokens.matches2(tt._export, tt._var) ||
+      this.tokens.matches2(tt._export, tt._let) ||
+      this.tokens.matches2(tt._export, tt._const)
+    ) {
+      this.processExportVar();
+      return true;
+    } else if (
+      this.tokens.matches2(tt._export, tt._function) ||
+      // export async function
+      this.tokens.matches3(tt._export, tt.name, tt._function)
+    ) {
+      this.processExportFunction();
+      return true;
+    } else if (
+      this.tokens.matches2(tt._export, tt._class) ||
+      this.tokens.matches3(tt._export, tt._abstract, tt._class) ||
+      this.tokens.matches2(tt._export, tt.at)
+    ) {
+      this.processExportClass();
+      return true;
+    } else if (this.tokens.matches2(tt._export, tt.star)) {
+      this.processExportStar();
+      return true;
+    } else {
+      throw new Error("Unrecognized export syntax.");
+    }
+  }
+
+   processAssignment() {
+    const index = this.tokens.currentIndex();
+    const identifierToken = this.tokens.tokens[index - 1];
+    // If the LHS is a type identifier, this must be a declaration like `let a: b = c;`,
+    // with `b` as the identifier, so nothing needs to be done in that case.
+    if (identifierToken.isType || identifierToken.type !== tt.name) {
+      return false;
+    }
+    if (identifierToken.shadowsGlobal) {
+      return false;
+    }
+    if (index >= 2 && this.tokens.matches1AtIndex(index - 2, tt.dot)) {
+      return false;
+    }
+    if (index >= 2 && [tt._var, tt._let, tt._const].includes(this.tokens.tokens[index - 2].type)) {
+      // Declarations don't need an extra assignment. This doesn't avoid the
+      // assignment for comma-separated declarations, but it's still correct
+      // since the assignment is just redundant.
+      return false;
+    }
+    const assignmentSnippet = this.importProcessor.resolveExportBinding(
+      this.tokens.identifierNameForToken(identifierToken),
+    );
+    if (!assignmentSnippet) {
+      return false;
+    }
+    this.tokens.copyToken();
+    this.tokens.appendCode(` ${assignmentSnippet} =`);
+    return true;
+  }
+
+  /**
+   * Process something like `a += 3`, where `a` might be an exported value.
+   */
+   processComplexAssignment() {
+    const index = this.tokens.currentIndex();
+    const identifierToken = this.tokens.tokens[index - 1];
+    if (identifierToken.type !== tt.name) {
+      return false;
+    }
+    if (identifierToken.shadowsGlobal) {
+      return false;
+    }
+    if (index >= 2 && this.tokens.matches1AtIndex(index - 2, tt.dot)) {
+      return false;
+    }
+    const assignmentSnippet = this.importProcessor.resolveExportBinding(
+      this.tokens.identifierNameForToken(identifierToken),
+    );
+    if (!assignmentSnippet) {
+      return false;
+    }
+    this.tokens.appendCode(` = ${assignmentSnippet}`);
+    this.tokens.copyToken();
+    return true;
+  }
+
+  /**
+   * Process something like `++a`, where `a` might be an exported value.
+   */
+   processPreIncDec() {
+    const index = this.tokens.currentIndex();
+    const identifierToken = this.tokens.tokens[index + 1];
+    if (identifierToken.type !== tt.name) {
+      return false;
+    }
+    if (identifierToken.shadowsGlobal) {
+      return false;
+    }
+    // Ignore things like ++a.b and ++a[b] and ++a().b.
+    if (
+      index + 2 < this.tokens.tokens.length &&
+      (this.tokens.matches1AtIndex(index + 2, tt.dot) ||
+        this.tokens.matches1AtIndex(index + 2, tt.bracketL) ||
+        this.tokens.matches1AtIndex(index + 2, tt.parenL))
+    ) {
+      return false;
+    }
+    const identifierName = this.tokens.identifierNameForToken(identifierToken);
+    const assignmentSnippet = this.importProcessor.resolveExportBinding(identifierName);
+    if (!assignmentSnippet) {
+      return false;
+    }
+    this.tokens.appendCode(`${assignmentSnippet} = `);
+    this.tokens.copyToken();
+    return true;
+  }
+
+  /**
+   * Process something like `a++`, where `a` might be an exported value.
+   * This starts at the `a`, not at the `++`.
+   */
+   processPostIncDec() {
+    const index = this.tokens.currentIndex();
+    const identifierToken = this.tokens.tokens[index];
+    const operatorToken = this.tokens.tokens[index + 1];
+    if (identifierToken.type !== tt.name) {
+      return false;
+    }
+    if (identifierToken.shadowsGlobal) {
+      return false;
+    }
+    if (index >= 1 && this.tokens.matches1AtIndex(index - 1, tt.dot)) {
+      return false;
+    }
+    const identifierName = this.tokens.identifierNameForToken(identifierToken);
+    const assignmentSnippet = this.importProcessor.resolveExportBinding(identifierName);
+    if (!assignmentSnippet) {
+      return false;
+    }
+    const operatorCode = this.tokens.rawCodeForToken(operatorToken);
+    // We might also replace the identifier with something like exports.x, so
+    // do that replacement here as well.
+    const base = this.importProcessor.getIdentifierReplacement(identifierName) || identifierName;
+    if (operatorCode === "++") {
+      this.tokens.replaceToken(`(${base} = ${assignmentSnippet} = ${base} + 1, ${base} - 1)`);
+    } else if (operatorCode === "--") {
+      this.tokens.replaceToken(`(${base} = ${assignmentSnippet} = ${base} - 1, ${base} + 1)`);
+    } else {
+      throw new Error(`Unexpected operator: ${operatorCode}`);
+    }
+    this.tokens.removeToken();
+    return true;
+  }
+
+   processExportDefault() {
+    let exportedRuntimeValue = true;
+    if (
+      this.tokens.matches4(tt._export, tt._default, tt._function, tt.name) ||
+      // export default async function
+      (this.tokens.matches5(tt._export, tt._default, tt.name, tt._function, tt.name) &&
+        this.tokens.matchesContextualAtIndex(
+          this.tokens.currentIndex() + 2,
+          ContextualKeyword._async,
+        ))
+    ) {
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      // Named function export case: change it to a top-level function
+      // declaration followed by exports statement.
+      const name = this.processNamedFunction();
+      this.tokens.appendCode(` exports.default = ${name};`);
+    } else if (
+      this.tokens.matches4(tt._export, tt._default, tt._class, tt.name) ||
+      this.tokens.matches5(tt._export, tt._default, tt._abstract, tt._class, tt.name) ||
+      this.tokens.matches3(tt._export, tt._default, tt.at)
+    ) {
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      this.copyDecorators();
+      if (this.tokens.matches1(tt._abstract)) {
+        this.tokens.removeToken();
+      }
+      const name = this.rootTransformer.processNamedClass();
+      this.tokens.appendCode(` exports.default = ${name};`);
+      // After this point, this is a plain "export default E" statement.
+    } else if (
+      shouldElideDefaultExport(
+        this.isTypeScriptTransformEnabled,
+        this.keepUnusedImports,
+        this.tokens,
+        this.declarationInfo,
+      )
+    ) {
+      // If the exported value is just an identifier and should be elided by TypeScript
+      // rules, then remove it entirely. It will always have the form `export default e`,
+      // where `e` is an identifier.
+      exportedRuntimeValue = false;
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      this.tokens.removeToken();
+    } else if (this.reactHotLoaderTransformer) {
+      // We need to assign E to a variable. Change "export default E" to
+      // "let _default; exports.default = _default = E"
+      const defaultVarName = this.nameManager.claimFreeName("_default");
+      this.tokens.replaceToken(`let ${defaultVarName}; exports.`);
+      this.tokens.copyToken();
+      this.tokens.appendCode(` = ${defaultVarName} =`);
+      this.reactHotLoaderTransformer.setExtractedDefaultExportName(defaultVarName);
+    } else {
+      // Change "export default E" to "exports.default = E"
+      this.tokens.replaceToken("exports.");
+      this.tokens.copyToken();
+      this.tokens.appendCode(" =");
+    }
+    if (exportedRuntimeValue) {
+      this.hadDefaultExport = true;
+    }
+  }
+
+   copyDecorators() {
+    while (this.tokens.matches1(tt.at)) {
+      this.tokens.copyToken();
+      if (this.tokens.matches1(tt.parenL)) {
+        this.tokens.copyExpectedToken(tt.parenL);
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(tt.parenR);
+      } else {
+        this.tokens.copyExpectedToken(tt.name);
+        while (this.tokens.matches1(tt.dot)) {
+          this.tokens.copyExpectedToken(tt.dot);
+          this.tokens.copyExpectedToken(tt.name);
+        }
+        if (this.tokens.matches1(tt.parenL)) {
+          this.tokens.copyExpectedToken(tt.parenL);
+          this.rootTransformer.processBalancedCode();
+          this.tokens.copyExpectedToken(tt.parenR);
+        }
+      }
+    }
+  }
+
+  /**
+   * Transform a declaration like `export var`, `export let`, or `export const`.
+   */
+   processExportVar() {
+    if (this.isSimpleExportVar()) {
+      this.processSimpleExportVar();
+    } else {
+      this.processComplexExportVar();
+    }
+  }
+
+  /**
+   * Determine if the export is of the form:
+   * export var/let/const [varName] = [expr];
+   * In other words, determine if function name inference might apply.
+   */
+   isSimpleExportVar() {
+    let tokenIndex = this.tokens.currentIndex();
+    // export
+    tokenIndex++;
+    // var/let/const
+    tokenIndex++;
+    if (!this.tokens.matches1AtIndex(tokenIndex, tt.name)) {
+      return false;
+    }
+    tokenIndex++;
+    while (tokenIndex < this.tokens.tokens.length && this.tokens.tokens[tokenIndex].isType) {
+      tokenIndex++;
+    }
+    if (!this.tokens.matches1AtIndex(tokenIndex, tt.eq)) {
+      return false;
+    }
+    return true;
+  }
+
+  /**
+   * Transform an `export var` declaration initializing a single variable.
+   *
+   * For example, this:
+   * export const f = () => {};
+   * becomes this:
+   * const f = () => {}; exports.f = f;
+   *
+   * The variable is unused (e.g. exports.f has the true value of the export).
+   * We need to produce an assignment of this form so that the function will
+   * have an inferred name of "f", which wouldn't happen in the more general
+   * case below.
+   */
+   processSimpleExportVar() {
+    // export
+    this.tokens.removeInitialToken();
+    // var/let/const
+    this.tokens.copyToken();
+    const varName = this.tokens.identifierName();
+    // x: number  ->  x
+    while (!this.tokens.matches1(tt.eq)) {
+      this.rootTransformer.processToken();
+    }
+    const endIndex = this.tokens.currentToken().rhsEndIndex;
+    if (endIndex == null) {
+      throw new Error("Expected = token with an end index.");
+    }
+    while (this.tokens.currentIndex() < endIndex) {
+      this.rootTransformer.processToken();
+    }
+    this.tokens.appendCode(`; exports.${varName} = ${varName}`);
+  }
+
+  /**
+   * Transform normal declaration exports, including handling destructuring.
+   * For example, this:
+   * export const {x: [a = 2, b], c} = d;
+   * becomes this:
+   * ({x: [exports.a = 2, exports.b], c: exports.c} = d;)
+   */
+   processComplexExportVar() {
+    this.tokens.removeInitialToken();
+    this.tokens.removeToken();
+    const needsParens = this.tokens.matches1(tt.braceL);
+    if (needsParens) {
+      this.tokens.appendCode("(");
+    }
+
+    let depth = 0;
+    while (true) {
+      if (
+        this.tokens.matches1(tt.braceL) ||
+        this.tokens.matches1(tt.dollarBraceL) ||
+        this.tokens.matches1(tt.bracketL)
+      ) {
+        depth++;
+        this.tokens.copyToken();
+      } else if (this.tokens.matches1(tt.braceR) || this.tokens.matches1(tt.bracketR)) {
+        depth--;
+        this.tokens.copyToken();
+      } else if (
+        depth === 0 &&
+        !this.tokens.matches1(tt.name) &&
+        !this.tokens.currentToken().isType
+      ) {
+        break;
+      } else if (this.tokens.matches1(tt.eq)) {
+        // Default values might have assignments in the RHS that we want to ignore, so skip past
+        // them.
+        const endIndex = this.tokens.currentToken().rhsEndIndex;
+        if (endIndex == null) {
+          throw new Error("Expected = token with an end index.");
+        }
+        while (this.tokens.currentIndex() < endIndex) {
+          this.rootTransformer.processToken();
+        }
+      } else {
+        const token = this.tokens.currentToken();
+        if (isDeclaration(token)) {
+          const name = this.tokens.identifierName();
+          let replacement = this.importProcessor.getIdentifierReplacement(name);
+          if (replacement === null) {
+            throw new Error(`Expected a replacement for ${name} in \`export var\` syntax.`);
+          }
+          if (isObjectShorthandDeclaration(token)) {
+            replacement = `${name}: ${replacement}`;
+          }
+          this.tokens.replaceToken(replacement);
+        } else {
+          this.rootTransformer.processToken();
+        }
+      }
+    }
+
+    if (needsParens) {
+      // Seek to the end of the RHS.
+      const endIndex = this.tokens.currentToken().rhsEndIndex;
+      if (endIndex == null) {
+        throw new Error("Expected = token with an end index.");
+      }
+      while (this.tokens.currentIndex() < endIndex) {
+        this.rootTransformer.processToken();
+      }
+      this.tokens.appendCode(")");
+    }
+  }
+
+  /**
+   * Transform this:
+   * export function foo() {}
+   * into this:
+   * function foo() {} exports.foo = foo;
+   */
+   processExportFunction() {
+    this.tokens.replaceToken("");
+    const name = this.processNamedFunction();
+    this.tokens.appendCode(` exports.${name} = ${name};`);
+  }
+
+  /**
+   * Skip past a function with a name and return that name.
+   */
+   processNamedFunction() {
+    if (this.tokens.matches1(tt._function)) {
+      this.tokens.copyToken();
+    } else if (this.tokens.matches2(tt.name, tt._function)) {
+      if (!this.tokens.matchesContextual(ContextualKeyword._async)) {
+        throw new Error("Expected async keyword in function export.");
+      }
+      this.tokens.copyToken();
+      this.tokens.copyToken();
+    }
+    if (this.tokens.matches1(tt.star)) {
+      this.tokens.copyToken();
+    }
+    if (!this.tokens.matches1(tt.name)) {
+      throw new Error("Expected identifier for exported function name.");
+    }
+    const name = this.tokens.identifierName();
+    this.tokens.copyToken();
+    if (this.tokens.currentToken().isType) {
+      this.tokens.removeInitialToken();
+      while (this.tokens.currentToken().isType) {
+        this.tokens.removeToken();
+      }
+    }
+    this.tokens.copyExpectedToken(tt.parenL);
+    this.rootTransformer.processBalancedCode();
+    this.tokens.copyExpectedToken(tt.parenR);
+    this.rootTransformer.processPossibleTypeRange();
+    this.tokens.copyExpectedToken(tt.braceL);
+    this.rootTransformer.processBalancedCode();
+    this.tokens.copyExpectedToken(tt.braceR);
+    return name;
+  }
+
+  /**
+   * Transform this:
+   * export class A {}
+   * into this:
+   * class A {} exports.A = A;
+   */
+   processExportClass() {
+    this.tokens.removeInitialToken();
+    this.copyDecorators();
+    if (this.tokens.matches1(tt._abstract)) {
+      this.tokens.removeToken();
+    }
+    const name = this.rootTransformer.processNamedClass();
+    this.tokens.appendCode(` exports.${name} = ${name};`);
+  }
+
+  /**
+   * Transform this:
+   * export {a, b as c};
+   * into this:
+   * exports.a = a; exports.c = b;
+   *
+   * OR
+   *
+   * Transform this:
+   * export {a, b as c} from './foo';
+   * into the pre-generated Object.defineProperty code from the ImportProcessor.
+   *
+   * For the first case, if the TypeScript transform is enabled, we need to skip
+   * exports that are only defined as types.
+   */
+   processExportBindings() {
+    this.tokens.removeInitialToken();
+    this.tokens.removeToken();
+
+    const isReExport = isExportFrom(this.tokens);
+
+    const exportStatements = [];
+    while (true) {
+      if (this.tokens.matches1(tt.braceR)) {
+        this.tokens.removeToken();
+        break;
+      }
+
+      const specifierInfo = getImportExportSpecifierInfo(this.tokens);
+
+      while (this.tokens.currentIndex() < specifierInfo.endIndex) {
+        this.tokens.removeToken();
+      }
+
+      const shouldRemoveExport =
+        specifierInfo.isType ||
+        (!isReExport && this.shouldElideExportedIdentifier(specifierInfo.leftName));
+      if (!shouldRemoveExport) {
+        const exportedName = specifierInfo.rightName;
+        if (exportedName === "default") {
+          this.hadDefaultExport = true;
+        } else {
+          this.hadNamedExport = true;
+        }
+        const localName = specifierInfo.leftName;
+        const newLocalName = this.importProcessor.getIdentifierReplacement(localName);
+        exportStatements.push(`exports.${exportedName} = ${newLocalName || localName};`);
+      }
+
+      if (this.tokens.matches1(tt.braceR)) {
+        this.tokens.removeToken();
+        break;
+      }
+      if (this.tokens.matches2(tt.comma, tt.braceR)) {
+        this.tokens.removeToken();
+        this.tokens.removeToken();
+        break;
+      } else if (this.tokens.matches1(tt.comma)) {
+        this.tokens.removeToken();
+      } else {
+        throw new Error(`Unexpected token: ${JSON.stringify(this.tokens.currentToken())}`);
+      }
+    }
+
+    if (this.tokens.matchesContextual(ContextualKeyword._from)) {
+      // This is an export...from, so throw away the normal named export code
+      // and use the Object.defineProperty code from ImportProcessor.
+      this.tokens.removeToken();
+      const path = this.tokens.stringValue();
+      this.tokens.replaceTokenTrimmingLeftWhitespace(this.importProcessor.claimImportCode(path));
+      removeMaybeImportAttributes(this.tokens);
+    } else {
+      // This is a normal named export, so use that.
+      this.tokens.appendCode(exportStatements.join(" "));
+    }
+
+    if (this.tokens.matches1(tt.semi)) {
+      this.tokens.removeToken();
+    }
+  }
+
+   processExportStar() {
+    this.tokens.removeInitialToken();
+    while (!this.tokens.matches1(tt.string)) {
+      this.tokens.removeToken();
+    }
+    const path = this.tokens.stringValue();
+    this.tokens.replaceTokenTrimmingLeftWhitespace(this.importProcessor.claimImportCode(path));
+    removeMaybeImportAttributes(this.tokens);
+    if (this.tokens.matches1(tt.semi)) {
+      this.tokens.removeToken();
+    }
+  }
+
+   shouldElideExportedIdentifier(name) {
+    return (
+      this.isTypeScriptTransformEnabled &&
+      !this.keepUnusedImports &&
+      !this.declarationInfo.valueDeclarations.has(name)
+    );
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/ESMImportTransformer.js b/node_modules/sucrase/dist/esm/transformers/ESMImportTransformer.js
new file mode 100644
index 0000000..b45cd3e
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/ESMImportTransformer.js
@@ -0,0 +1,415 @@
+
+
+
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import elideImportEquals from "../util/elideImportEquals";
+import getDeclarationInfo, {
+
+  EMPTY_DECLARATION_INFO,
+} from "../util/getDeclarationInfo";
+import getImportExportSpecifierInfo from "../util/getImportExportSpecifierInfo";
+import {getNonTypeIdentifiers} from "../util/getNonTypeIdentifiers";
+import isExportFrom from "../util/isExportFrom";
+import {removeMaybeImportAttributes} from "../util/removeMaybeImportAttributes";
+import shouldElideDefaultExport from "../util/shouldElideDefaultExport";
+
+import Transformer from "./Transformer";
+
+/**
+ * Class for editing import statements when we are keeping the code as ESM. We still need to remove
+ * type-only imports in TypeScript and Flow.
+ */
+export default class ESMImportTransformer extends Transformer {
+  
+  
+  
+
+  constructor(
+     tokens,
+     nameManager,
+     helperManager,
+     reactHotLoaderTransformer,
+     isTypeScriptTransformEnabled,
+     isFlowTransformEnabled,
+     keepUnusedImports,
+    options,
+  ) {
+    super();this.tokens = tokens;this.nameManager = nameManager;this.helperManager = helperManager;this.reactHotLoaderTransformer = reactHotLoaderTransformer;this.isTypeScriptTransformEnabled = isTypeScriptTransformEnabled;this.isFlowTransformEnabled = isFlowTransformEnabled;this.keepUnusedImports = keepUnusedImports;;
+    this.nonTypeIdentifiers =
+      isTypeScriptTransformEnabled && !keepUnusedImports
+        ? getNonTypeIdentifiers(tokens, options)
+        : new Set();
+    this.declarationInfo =
+      isTypeScriptTransformEnabled && !keepUnusedImports
+        ? getDeclarationInfo(tokens)
+        : EMPTY_DECLARATION_INFO;
+    this.injectCreateRequireForImportRequire = Boolean(options.injectCreateRequireForImportRequire);
+  }
+
+  process() {
+    // TypeScript `import foo = require('foo');` should always just be translated to plain require.
+    if (this.tokens.matches3(tt._import, tt.name, tt.eq)) {
+      return this.processImportEquals();
+    }
+    if (
+      this.tokens.matches4(tt._import, tt.name, tt.name, tt.eq) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._type)
+    ) {
+      // import type T = require('T')
+      this.tokens.removeInitialToken();
+      // This construct is always exactly 8 tokens long, so remove the 7 remaining tokens.
+      for (let i = 0; i < 7; i++) {
+        this.tokens.removeToken();
+      }
+      return true;
+    }
+    if (this.tokens.matches2(tt._export, tt.eq)) {
+      this.tokens.replaceToken("module.exports");
+      return true;
+    }
+    if (
+      this.tokens.matches5(tt._export, tt._import, tt.name, tt.name, tt.eq) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 2, ContextualKeyword._type)
+    ) {
+      // export import type T = require('T')
+      this.tokens.removeInitialToken();
+      // This construct is always exactly 9 tokens long, so remove the 8 remaining tokens.
+      for (let i = 0; i < 8; i++) {
+        this.tokens.removeToken();
+      }
+      return true;
+    }
+    if (this.tokens.matches1(tt._import)) {
+      return this.processImport();
+    }
+    if (this.tokens.matches2(tt._export, tt._default)) {
+      return this.processExportDefault();
+    }
+    if (this.tokens.matches2(tt._export, tt.braceL)) {
+      return this.processNamedExports();
+    }
+    if (
+      this.tokens.matches2(tt._export, tt.name) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._type)
+    ) {
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      if (this.tokens.matches1(tt.braceL)) {
+        while (!this.tokens.matches1(tt.braceR)) {
+          this.tokens.removeToken();
+        }
+        this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(tt._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
+      }
+      // Remove type re-export `... } from './T'`
+      if (
+        this.tokens.matchesContextual(ContextualKeyword._from) &&
+        this.tokens.matches1AtIndex(this.tokens.currentIndex() + 1, tt.string)
+      ) {
+        this.tokens.removeToken();
+        this.tokens.removeToken();
+        removeMaybeImportAttributes(this.tokens);
+      }
+      return true;
+    }
+    return false;
+  }
+
+   processImportEquals() {
+    const importName = this.tokens.identifierNameAtIndex(this.tokens.currentIndex() + 1);
+    if (this.shouldAutomaticallyElideImportedName(importName)) {
+      // If this name is only used as a type, elide the whole import.
+      elideImportEquals(this.tokens);
+    } else if (this.injectCreateRequireForImportRequire) {
+      // We're using require in an environment (Node ESM) that doesn't provide
+      // it as a global, so generate a helper to import it.
+      // import -> const
+      this.tokens.replaceToken("const");
+      // Foo
+      this.tokens.copyToken();
+      // =
+      this.tokens.copyToken();
+      // require
+      this.tokens.replaceToken(this.helperManager.getHelperName("require"));
+    } else {
+      // Otherwise, just switch `import` to `const`.
+      this.tokens.replaceToken("const");
+    }
+    return true;
+  }
+
+   processImport() {
+    if (this.tokens.matches2(tt._import, tt.parenL)) {
+      // Dynamic imports don't need to be transformed.
+      return false;
+    }
+
+    const snapshot = this.tokens.snapshot();
+    const allImportsRemoved = this.removeImportTypeBindings();
+    if (allImportsRemoved) {
+      this.tokens.restoreToSnapshot(snapshot);
+      while (!this.tokens.matches1(tt.string)) {
+        this.tokens.removeToken();
+      }
+      this.tokens.removeToken();
+      removeMaybeImportAttributes(this.tokens);
+      if (this.tokens.matches1(tt.semi)) {
+        this.tokens.removeToken();
+      }
+    }
+    return true;
+  }
+
+  /**
+   * Remove type bindings from this import, leaving the rest of the import intact.
+   *
+   * Return true if this import was ONLY types, and thus is eligible for removal. This will bail out
+   * of the replacement operation, so we can return early here.
+   */
+   removeImportTypeBindings() {
+    this.tokens.copyExpectedToken(tt._import);
+    if (
+      this.tokens.matchesContextual(ContextualKeyword._type) &&
+      !this.tokens.matches1AtIndex(this.tokens.currentIndex() + 1, tt.comma) &&
+      !this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._from)
+    ) {
+      // This is an "import type" statement, so exit early.
+      return true;
+    }
+
+    if (this.tokens.matches1(tt.string)) {
+      // This is a bare import, so we should proceed with the import.
+      this.tokens.copyToken();
+      return false;
+    }
+
+    // Skip the "module" token in import reflection.
+    if (
+      this.tokens.matchesContextual(ContextualKeyword._module) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 2, ContextualKeyword._from)
+    ) {
+      this.tokens.copyToken();
+    }
+
+    let foundNonTypeImport = false;
+    let foundAnyNamedImport = false;
+    let needsComma = false;
+
+    // Handle default import.
+    if (this.tokens.matches1(tt.name)) {
+      if (this.shouldAutomaticallyElideImportedName(this.tokens.identifierName())) {
+        this.tokens.removeToken();
+        if (this.tokens.matches1(tt.comma)) {
+          this.tokens.removeToken();
+        }
+      } else {
+        foundNonTypeImport = true;
+        this.tokens.copyToken();
+        if (this.tokens.matches1(tt.comma)) {
+          // We're in a statement like:
+          // import A, * as B from './A';
+          // or
+          // import A, {foo} from './A';
+          // where the `A` is being kept. The comma should be removed if an only
+          // if the next part of the import statement is elided, but that's hard
+          // to determine at this point in the code. Instead, always remove it
+          // and set a flag to add it back if necessary.
+          needsComma = true;
+          this.tokens.removeToken();
+        }
+      }
+    }
+
+    if (this.tokens.matches1(tt.star)) {
+      if (this.shouldAutomaticallyElideImportedName(this.tokens.identifierNameAtRelativeIndex(2))) {
+        this.tokens.removeToken();
+        this.tokens.removeToken();
+        this.tokens.removeToken();
+      } else {
+        if (needsComma) {
+          this.tokens.appendCode(",");
+        }
+        foundNonTypeImport = true;
+        this.tokens.copyExpectedToken(tt.star);
+        this.tokens.copyExpectedToken(tt.name);
+        this.tokens.copyExpectedToken(tt.name);
+      }
+    } else if (this.tokens.matches1(tt.braceL)) {
+      if (needsComma) {
+        this.tokens.appendCode(",");
+      }
+      this.tokens.copyToken();
+      while (!this.tokens.matches1(tt.braceR)) {
+        foundAnyNamedImport = true;
+        const specifierInfo = getImportExportSpecifierInfo(this.tokens);
+        if (
+          specifierInfo.isType ||
+          this.shouldAutomaticallyElideImportedName(specifierInfo.rightName)
+        ) {
+          while (this.tokens.currentIndex() < specifierInfo.endIndex) {
+            this.tokens.removeToken();
+          }
+          if (this.tokens.matches1(tt.comma)) {
+            this.tokens.removeToken();
+          }
+        } else {
+          foundNonTypeImport = true;
+          while (this.tokens.currentIndex() < specifierInfo.endIndex) {
+            this.tokens.copyToken();
+          }
+          if (this.tokens.matches1(tt.comma)) {
+            this.tokens.copyToken();
+          }
+        }
+      }
+      this.tokens.copyExpectedToken(tt.braceR);
+    }
+
+    if (this.keepUnusedImports) {
+      return false;
+    }
+    if (this.isTypeScriptTransformEnabled) {
+      return !foundNonTypeImport;
+    } else if (this.isFlowTransformEnabled) {
+      // In Flow, unlike TS, `import {} from 'foo';` preserves the import.
+      return foundAnyNamedImport && !foundNonTypeImport;
+    } else {
+      return false;
+    }
+  }
+
+   shouldAutomaticallyElideImportedName(name) {
+    return (
+      this.isTypeScriptTransformEnabled &&
+      !this.keepUnusedImports &&
+      !this.nonTypeIdentifiers.has(name)
+    );
+  }
+
+   processExportDefault() {
+    if (
+      shouldElideDefaultExport(
+        this.isTypeScriptTransformEnabled,
+        this.keepUnusedImports,
+        this.tokens,
+        this.declarationInfo,
+      )
+    ) {
+      // If the exported value is just an identifier and should be elided by TypeScript
+      // rules, then remove it entirely. It will always have the form `export default e`,
+      // where `e` is an identifier.
+      this.tokens.removeInitialToken();
+      this.tokens.removeToken();
+      this.tokens.removeToken();
+      return true;
+    }
+
+    const alreadyHasName =
+      this.tokens.matches4(tt._export, tt._default, tt._function, tt.name) ||
+      // export default async function
+      (this.tokens.matches5(tt._export, tt._default, tt.name, tt._function, tt.name) &&
+        this.tokens.matchesContextualAtIndex(
+          this.tokens.currentIndex() + 2,
+          ContextualKeyword._async,
+        )) ||
+      this.tokens.matches4(tt._export, tt._default, tt._class, tt.name) ||
+      this.tokens.matches5(tt._export, tt._default, tt._abstract, tt._class, tt.name);
+
+    if (!alreadyHasName && this.reactHotLoaderTransformer) {
+      // This is a plain "export default E" statement and we need to assign E to a variable.
+      // Change "export default E" to "let _default; export default _default = E"
+      const defaultVarName = this.nameManager.claimFreeName("_default");
+      this.tokens.replaceToken(`let ${defaultVarName}; export`);
+      this.tokens.copyToken();
+      this.tokens.appendCode(` ${defaultVarName} =`);
+      this.reactHotLoaderTransformer.setExtractedDefaultExportName(defaultVarName);
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Handle a statement with one of these forms:
+   * export {a, type b};
+   * export {c, type d} from 'foo';
+   *
+   * In both cases, any explicit type exports should be removed. In the first
+   * case, we also need to handle implicit export elision for names declared as
+   * types. In the second case, we must NOT do implicit named export elision,
+   * but we must remove the runtime import if all exports are type exports.
+   */
+   processNamedExports() {
+    if (!this.isTypeScriptTransformEnabled) {
+      return false;
+    }
+    this.tokens.copyExpectedToken(tt._export);
+    this.tokens.copyExpectedToken(tt.braceL);
+
+    const isReExport = isExportFrom(this.tokens);
+    let foundNonTypeExport = false;
+    while (!this.tokens.matches1(tt.braceR)) {
+      const specifierInfo = getImportExportSpecifierInfo(this.tokens);
+      if (
+        specifierInfo.isType ||
+        (!isReExport && this.shouldElideExportedName(specifierInfo.leftName))
+      ) {
+        // Type export, so remove all tokens, including any comma.
+        while (this.tokens.currentIndex() < specifierInfo.endIndex) {
+          this.tokens.removeToken();
+        }
+        if (this.tokens.matches1(tt.comma)) {
+          this.tokens.removeToken();
+        }
+      } else {
+        // Non-type export, so copy all tokens, including any comma.
+        foundNonTypeExport = true;
+        while (this.tokens.currentIndex() < specifierInfo.endIndex) {
+          this.tokens.copyToken();
+        }
+        if (this.tokens.matches1(tt.comma)) {
+          this.tokens.copyToken();
+        }
+      }
+    }
+    this.tokens.copyExpectedToken(tt.braceR);
+
+    if (!this.keepUnusedImports && isReExport && !foundNonTypeExport) {
+      // This is a type-only re-export, so skip evaluating the other module. Technically this
+      // leaves the statement as `export {}`, but that's ok since that's a no-op.
+      this.tokens.removeToken();
+      this.tokens.removeToken();
+      removeMaybeImportAttributes(this.tokens);
+    }
+
+    return true;
+  }
+
+  /**
+   * ESM elides all imports with the rule that we only elide if we see that it's
+   * a type and never see it as a value. This is in contrast to CJS, which
+   * elides imports that are completely unknown.
+   */
+   shouldElideExportedName(name) {
+    return (
+      this.isTypeScriptTransformEnabled &&
+      !this.keepUnusedImports &&
+      this.declarationInfo.typeDeclarations.has(name) &&
+      !this.declarationInfo.valueDeclarations.has(name)
+    );
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/FlowTransformer.js b/node_modules/sucrase/dist/esm/transformers/FlowTransformer.js
new file mode 100644
index 0000000..7df0aca
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/FlowTransformer.js
@@ -0,0 +1,182 @@
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+import Transformer from "./Transformer";
+
+export default class FlowTransformer extends Transformer {
+  constructor(
+     rootTransformer,
+     tokens,
+     isImportsTransformEnabled,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.isImportsTransformEnabled = isImportsTransformEnabled;;
+  }
+
+  process() {
+    if (
+      this.rootTransformer.processPossibleArrowParamEnd() ||
+      this.rootTransformer.processPossibleAsyncArrowWithTypeParams() ||
+      this.rootTransformer.processPossibleTypeRange()
+    ) {
+      return true;
+    }
+    if (this.tokens.matches1(tt._enum)) {
+      this.processEnum();
+      return true;
+    }
+    if (this.tokens.matches2(tt._export, tt._enum)) {
+      this.processNamedExportEnum();
+      return true;
+    }
+    if (this.tokens.matches3(tt._export, tt._default, tt._enum)) {
+      this.processDefaultExportEnum();
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Handle a declaration like:
+   * export enum E ...
+   *
+   * With this imports transform, this becomes:
+   * const E = [[enum]]; exports.E = E;
+   *
+   * otherwise, it becomes:
+   * export const E = [[enum]];
+   */
+  processNamedExportEnum() {
+    if (this.isImportsTransformEnabled) {
+      // export
+      this.tokens.removeInitialToken();
+      const enumName = this.tokens.identifierNameAtRelativeIndex(1);
+      this.processEnum();
+      this.tokens.appendCode(` exports.${enumName} = ${enumName};`);
+    } else {
+      this.tokens.copyToken();
+      this.processEnum();
+    }
+  }
+
+  /**
+   * Handle a declaration like:
+   * export default enum E
+   *
+   * With the imports transform, this becomes:
+   * const E = [[enum]]; exports.default = E;
+   *
+   * otherwise, it becomes:
+   * const E = [[enum]]; export default E;
+   */
+  processDefaultExportEnum() {
+    // export
+    this.tokens.removeInitialToken();
+    // default
+    this.tokens.removeToken();
+    const enumName = this.tokens.identifierNameAtRelativeIndex(1);
+    this.processEnum();
+    if (this.isImportsTransformEnabled) {
+      this.tokens.appendCode(` exports.default = ${enumName};`);
+    } else {
+      this.tokens.appendCode(` export default ${enumName};`);
+    }
+  }
+
+  /**
+   * Transpile flow enums to invoke the "flow-enums-runtime" library.
+   *
+   * Currently, the transpiled code always uses `require("flow-enums-runtime")`,
+   * but if future flexibility is needed, we could expose a config option for
+   * this string (similar to configurable JSX). Even when targeting ESM, the
+   * default behavior of babel-plugin-transform-flow-enums is to use require
+   * rather than injecting an import.
+   *
+   * Flow enums are quite a bit simpler than TS enums and have some convenient
+   * constraints:
+   * - Element initializers must be either always present or always absent. That
+   *   means that we can use fixed lookahead on the first element (if any) and
+   *   assume that all elements are like that.
+   * - The right-hand side of an element initializer must be a literal value,
+   *   not a complex expression and not referencing other elements. That means
+   *   we can simply copy a single token.
+   *
+   * Enums can be broken up into three basic cases:
+   *
+   * Mirrored enums:
+   * enum E {A, B}
+   *   ->
+   * const E = require("flow-enums-runtime").Mirrored(["A", "B"]);
+   *
+   * Initializer enums:
+   * enum E {A = 1, B = 2}
+   *   ->
+   * const E = require("flow-enums-runtime")({A: 1, B: 2});
+   *
+   * Symbol enums:
+   * enum E of symbol {A, B}
+   *   ->
+   * const E = require("flow-enums-runtime")({A: Symbol("A"), B: Symbol("B")});
+   *
+   * We can statically detect which of the three cases this is by looking at the
+   * "of" declaration (if any) and seeing if the first element has an initializer.
+   * Since the other transform details are so similar between the three cases, we
+   * use a single implementation and vary the transform within processEnumElement
+   * based on case.
+   */
+  processEnum() {
+    // enum E -> const E
+    this.tokens.replaceToken("const");
+    this.tokens.copyExpectedToken(tt.name);
+
+    let isSymbolEnum = false;
+    if (this.tokens.matchesContextual(ContextualKeyword._of)) {
+      this.tokens.removeToken();
+      isSymbolEnum = this.tokens.matchesContextual(ContextualKeyword._symbol);
+      this.tokens.removeToken();
+    }
+    const hasInitializers = this.tokens.matches3(tt.braceL, tt.name, tt.eq);
+    this.tokens.appendCode(' = require("flow-enums-runtime")');
+
+    const isMirrored = !isSymbolEnum && !hasInitializers;
+    this.tokens.replaceTokenTrimmingLeftWhitespace(isMirrored ? ".Mirrored([" : "({");
+
+    while (!this.tokens.matches1(tt.braceR)) {
+      // ... is allowed at the end and has no runtime behavior.
+      if (this.tokens.matches1(tt.ellipsis)) {
+        this.tokens.removeToken();
+        break;
+      }
+      this.processEnumElement(isSymbolEnum, hasInitializers);
+      if (this.tokens.matches1(tt.comma)) {
+        this.tokens.copyToken();
+      }
+    }
+
+    this.tokens.replaceToken(isMirrored ? "]);" : "});");
+  }
+
+  /**
+   * Process an individual enum element, producing either an array element or an
+   * object element based on what type of enum this is.
+   */
+  processEnumElement(isSymbolEnum, hasInitializers) {
+    if (isSymbolEnum) {
+      // Symbol enums never have initializers and are expanded to object elements.
+      // A, -> A: Symbol("A"),
+      const elementName = this.tokens.identifierName();
+      this.tokens.copyToken();
+      this.tokens.appendCode(`: Symbol("${elementName}")`);
+    } else if (hasInitializers) {
+      // Initializers are expanded to object elements.
+      // A = 1, -> A: 1,
+      this.tokens.copyToken();
+      this.tokens.replaceTokenTrimmingLeftWhitespace(":");
+      this.tokens.copyToken();
+    } else {
+      // Enum elements without initializers become string literal array elements.
+      // A, -> "A",
+      this.tokens.replaceToken(`"${this.tokens.identifierName()}"`);
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/JSXTransformer.js b/node_modules/sucrase/dist/esm/transformers/JSXTransformer.js
new file mode 100644
index 0000000..e5f5ae5
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/JSXTransformer.js
@@ -0,0 +1,733 @@
+
+
+
+import XHTMLEntities from "../parser/plugins/jsx/xhtml";
+import {JSXRole} from "../parser/tokenizer";
+import {TokenType as tt} from "../parser/tokenizer/types";
+import {charCodes} from "../parser/util/charcodes";
+
+import getJSXPragmaInfo, {} from "../util/getJSXPragmaInfo";
+
+import Transformer from "./Transformer";
+
+export default class JSXTransformer extends Transformer {
+  
+  
+  
+
+  // State for calculating the line number of each JSX tag in development.
+  __init() {this.lastLineNumber = 1}
+  __init2() {this.lastIndex = 0}
+
+  // In development, variable name holding the name of the current file.
+  __init3() {this.filenameVarName = null}
+  // Mapping of claimed names for imports in the automatic transform, e,g.
+  // {jsx: "_jsx"}. This determines which imports to generate in the prefix.
+  __init4() {this.esmAutomaticImportNameResolutions = {}}
+  // When automatically adding imports in CJS mode, we store the variable name
+  // holding the imported CJS module so we can require it in the prefix.
+  __init5() {this.cjsAutomaticModuleNameResolutions = {}}
+
+  constructor(
+     rootTransformer,
+     tokens,
+     importProcessor,
+     nameManager,
+     options,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.importProcessor = importProcessor;this.nameManager = nameManager;this.options = options;JSXTransformer.prototype.__init.call(this);JSXTransformer.prototype.__init2.call(this);JSXTransformer.prototype.__init3.call(this);JSXTransformer.prototype.__init4.call(this);JSXTransformer.prototype.__init5.call(this);;
+    this.jsxPragmaInfo = getJSXPragmaInfo(options);
+    this.isAutomaticRuntime = options.jsxRuntime === "automatic";
+    this.jsxImportSource = options.jsxImportSource || "react";
+  }
+
+  process() {
+    if (this.tokens.matches1(tt.jsxTagStart)) {
+      this.processJSXTag();
+      return true;
+    }
+    return false;
+  }
+
+  getPrefixCode() {
+    let prefix = "";
+    if (this.filenameVarName) {
+      prefix += `const ${this.filenameVarName} = ${JSON.stringify(this.options.filePath || "")};`;
+    }
+    if (this.isAutomaticRuntime) {
+      if (this.importProcessor) {
+        // CJS mode: emit require statements for all modules that were referenced.
+        for (const [path, resolvedName] of Object.entries(this.cjsAutomaticModuleNameResolutions)) {
+          prefix += `var ${resolvedName} = require("${path}");`;
+        }
+      } else {
+        // ESM mode: consolidate and emit import statements for referenced names.
+        const {createElement: createElementResolution, ...otherResolutions} =
+          this.esmAutomaticImportNameResolutions;
+        if (createElementResolution) {
+          prefix += `import {createElement as ${createElementResolution}} from "${this.jsxImportSource}";`;
+        }
+        const importSpecifiers = Object.entries(otherResolutions)
+          .map(([name, resolvedName]) => `${name} as ${resolvedName}`)
+          .join(", ");
+        if (importSpecifiers) {
+          const importPath =
+            this.jsxImportSource + (this.options.production ? "/jsx-runtime" : "/jsx-dev-runtime");
+          prefix += `import {${importSpecifiers}} from "${importPath}";`;
+        }
+      }
+    }
+    return prefix;
+  }
+
+  processJSXTag() {
+    const {jsxRole, start} = this.tokens.currentToken();
+    // Calculate line number information at the very start (if in development
+    // mode) so that the information is guaranteed to be queried in token order.
+    const elementLocationCode = this.options.production ? null : this.getElementLocationCode(start);
+    if (this.isAutomaticRuntime && jsxRole !== JSXRole.KeyAfterPropSpread) {
+      this.transformTagToJSXFunc(elementLocationCode, jsxRole);
+    } else {
+      this.transformTagToCreateElement(elementLocationCode);
+    }
+  }
+
+  getElementLocationCode(firstTokenStart) {
+    const lineNumber = this.getLineNumberForIndex(firstTokenStart);
+    return `lineNumber: ${lineNumber}`;
+  }
+
+  /**
+   * Get the line number for this source position. This is calculated lazily and
+   * must be called in increasing order by index.
+   */
+  getLineNumberForIndex(index) {
+    const code = this.tokens.code;
+    while (this.lastIndex < index && this.lastIndex < code.length) {
+      if (code[this.lastIndex] === "\n") {
+        this.lastLineNumber++;
+      }
+      this.lastIndex++;
+    }
+    return this.lastLineNumber;
+  }
+
+  /**
+   * Convert the current JSX element to a call to jsx, jsxs, or jsxDEV. This is
+   * the primary transformation for the automatic transform.
+   *
+   * Example:
+   * <div a={1} key={2}>Hello{x}</div>
+   * becomes
+   * jsxs('div', {a: 1, children: ["Hello", x]}, 2)
+   */
+  transformTagToJSXFunc(elementLocationCode, jsxRole) {
+    const isStatic = jsxRole === JSXRole.StaticChildren;
+    // First tag is always jsxTagStart.
+    this.tokens.replaceToken(this.getJSXFuncInvocationCode(isStatic));
+
+    let keyCode = null;
+    if (this.tokens.matches1(tt.jsxTagEnd)) {
+      // Fragment syntax.
+      this.tokens.replaceToken(`${this.getFragmentCode()}, {`);
+      this.processAutomaticChildrenAndEndProps(jsxRole);
+    } else {
+      // Normal open tag or self-closing tag.
+      this.processTagIntro();
+      this.tokens.appendCode(", {");
+      keyCode = this.processProps(true);
+
+      if (this.tokens.matches2(tt.slash, tt.jsxTagEnd)) {
+        // Self-closing tag, no children to add, so close the props.
+        this.tokens.appendCode("}");
+      } else if (this.tokens.matches1(tt.jsxTagEnd)) {
+        // Tag with children.
+        this.tokens.removeToken();
+        this.processAutomaticChildrenAndEndProps(jsxRole);
+      } else {
+        throw new Error("Expected either /> or > at the end of the tag.");
+      }
+      // If a key was present, move it to its own arg. Note that moving code
+      // like this will cause line numbers to get out of sync within the JSX
+      // element if the key expression has a newline in it. This is unfortunate,
+      // but hopefully should be rare.
+      if (keyCode) {
+        this.tokens.appendCode(`, ${keyCode}`);
+      }
+    }
+    if (!this.options.production) {
+      // If the key wasn't already added, add it now so we can correctly set
+      // positional args for jsxDEV.
+      if (keyCode === null) {
+        this.tokens.appendCode(", void 0");
+      }
+      this.tokens.appendCode(`, ${isStatic}, ${this.getDevSource(elementLocationCode)}, this`);
+    }
+    // We're at the close-tag or the end of a self-closing tag, so remove
+    // everything else and close the function call.
+    this.tokens.removeInitialToken();
+    while (!this.tokens.matches1(tt.jsxTagEnd)) {
+      this.tokens.removeToken();
+    }
+    this.tokens.replaceToken(")");
+  }
+
+  /**
+   * Convert the current JSX element to a createElement call. In the classic
+   * runtime, this is the only case. In the automatic runtime, this is called
+   * as a fallback in some situations.
+   *
+   * Example:
+   * <div a={1} key={2}>Hello{x}</div>
+   * becomes
+   * React.createElement('div', {a: 1, key: 2}, "Hello", x)
+   */
+  transformTagToCreateElement(elementLocationCode) {
+    // First tag is always jsxTagStart.
+    this.tokens.replaceToken(this.getCreateElementInvocationCode());
+
+    if (this.tokens.matches1(tt.jsxTagEnd)) {
+      // Fragment syntax.
+      this.tokens.replaceToken(`${this.getFragmentCode()}, null`);
+      this.processChildren(true);
+    } else {
+      // Normal open tag or self-closing tag.
+      this.processTagIntro();
+      this.processPropsObjectWithDevInfo(elementLocationCode);
+
+      if (this.tokens.matches2(tt.slash, tt.jsxTagEnd)) {
+        // Self-closing tag; no children to process.
+      } else if (this.tokens.matches1(tt.jsxTagEnd)) {
+        // Tag with children and a close-tag; process the children as args.
+        this.tokens.removeToken();
+        this.processChildren(true);
+      } else {
+        throw new Error("Expected either /> or > at the end of the tag.");
+      }
+    }
+    // We're at the close-tag or the end of a self-closing tag, so remove
+    // everything else and close the function call.
+    this.tokens.removeInitialToken();
+    while (!this.tokens.matches1(tt.jsxTagEnd)) {
+      this.tokens.removeToken();
+    }
+    this.tokens.replaceToken(")");
+  }
+
+  /**
+   * Get the code for the relevant function for this context: jsx, jsxs,
+   * or jsxDEV. The following open-paren is included as well.
+   *
+   * These functions are only used for the automatic runtime, so they are always
+   * auto-imported, but the auto-import will be either CJS or ESM based on the
+   * target module format.
+   */
+  getJSXFuncInvocationCode(isStatic) {
+    if (this.options.production) {
+      if (isStatic) {
+        return this.claimAutoImportedFuncInvocation("jsxs", "/jsx-runtime");
+      } else {
+        return this.claimAutoImportedFuncInvocation("jsx", "/jsx-runtime");
+      }
+    } else {
+      return this.claimAutoImportedFuncInvocation("jsxDEV", "/jsx-dev-runtime");
+    }
+  }
+
+  /**
+   * Return the code to use for the createElement function, e.g.
+   * `React.createElement`, including the following open-paren.
+   *
+   * This is the main function to use for the classic runtime. For the
+   * automatic runtime, this function is used as a fallback function to
+   * preserve behavior when there is a prop spread followed by an explicit
+   * key. In that automatic runtime case, the function should be automatically
+   * imported.
+   */
+  getCreateElementInvocationCode() {
+    if (this.isAutomaticRuntime) {
+      return this.claimAutoImportedFuncInvocation("createElement", "");
+    } else {
+      const {jsxPragmaInfo} = this;
+      const resolvedPragmaBaseName = this.importProcessor
+        ? this.importProcessor.getIdentifierReplacement(jsxPragmaInfo.base) || jsxPragmaInfo.base
+        : jsxPragmaInfo.base;
+      return `${resolvedPragmaBaseName}${jsxPragmaInfo.suffix}(`;
+    }
+  }
+
+  /**
+   * Return the code to use as the component when compiling a shorthand
+   * fragment, e.g. `React.Fragment`.
+   *
+   * This may be called from either the classic or automatic runtime, and
+   * the value should be auto-imported for the automatic runtime.
+   */
+  getFragmentCode() {
+    if (this.isAutomaticRuntime) {
+      return this.claimAutoImportedName(
+        "Fragment",
+        this.options.production ? "/jsx-runtime" : "/jsx-dev-runtime",
+      );
+    } else {
+      const {jsxPragmaInfo} = this;
+      const resolvedFragmentPragmaBaseName = this.importProcessor
+        ? this.importProcessor.getIdentifierReplacement(jsxPragmaInfo.fragmentBase) ||
+          jsxPragmaInfo.fragmentBase
+        : jsxPragmaInfo.fragmentBase;
+      return resolvedFragmentPragmaBaseName + jsxPragmaInfo.fragmentSuffix;
+    }
+  }
+
+  /**
+   * Return code that invokes the given function.
+   *
+   * When the imports transform is enabled, use the CJSImportTransformer
+   * strategy of using `.call(void 0, ...` to avoid passing a `this` value in a
+   * situation that would otherwise look like a method call.
+   */
+  claimAutoImportedFuncInvocation(funcName, importPathSuffix) {
+    const funcCode = this.claimAutoImportedName(funcName, importPathSuffix);
+    if (this.importProcessor) {
+      return `${funcCode}.call(void 0, `;
+    } else {
+      return `${funcCode}(`;
+    }
+  }
+
+  claimAutoImportedName(funcName, importPathSuffix) {
+    if (this.importProcessor) {
+      // CJS mode: claim a name for the module and mark it for import.
+      const path = this.jsxImportSource + importPathSuffix;
+      if (!this.cjsAutomaticModuleNameResolutions[path]) {
+        this.cjsAutomaticModuleNameResolutions[path] =
+          this.importProcessor.getFreeIdentifierForPath(path);
+      }
+      return `${this.cjsAutomaticModuleNameResolutions[path]}.${funcName}`;
+    } else {
+      // ESM mode: claim a name for this function and add it to the names that
+      // should be auto-imported when the prefix is generated.
+      if (!this.esmAutomaticImportNameResolutions[funcName]) {
+        this.esmAutomaticImportNameResolutions[funcName] = this.nameManager.claimFreeName(
+          `_${funcName}`,
+        );
+      }
+      return this.esmAutomaticImportNameResolutions[funcName];
+    }
+  }
+
+  /**
+   * Process the first part of a tag, before any props.
+   */
+  processTagIntro() {
+    // Walk forward until we see one of these patterns:
+    // jsxName to start the first prop, preceded by another jsxName to end the tag name.
+    // jsxName to start the first prop, preceded by greaterThan to end the type argument.
+    // [open brace] to start the first prop.
+    // [jsxTagEnd] to end the open-tag.
+    // [slash, jsxTagEnd] to end the self-closing tag.
+    let introEnd = this.tokens.currentIndex() + 1;
+    while (
+      this.tokens.tokens[introEnd].isType ||
+      (!this.tokens.matches2AtIndex(introEnd - 1, tt.jsxName, tt.jsxName) &&
+        !this.tokens.matches2AtIndex(introEnd - 1, tt.greaterThan, tt.jsxName) &&
+        !this.tokens.matches1AtIndex(introEnd, tt.braceL) &&
+        !this.tokens.matches1AtIndex(introEnd, tt.jsxTagEnd) &&
+        !this.tokens.matches2AtIndex(introEnd, tt.slash, tt.jsxTagEnd))
+    ) {
+      introEnd++;
+    }
+    if (introEnd === this.tokens.currentIndex() + 1) {
+      const tagName = this.tokens.identifierName();
+      if (startsWithLowerCase(tagName)) {
+        this.tokens.replaceToken(`'${tagName}'`);
+      }
+    }
+    while (this.tokens.currentIndex() < introEnd) {
+      this.rootTransformer.processToken();
+    }
+  }
+
+  /**
+   * Starting at the beginning of the props, add the props argument to
+   * React.createElement, including the comma before it.
+   */
+  processPropsObjectWithDevInfo(elementLocationCode) {
+    const devProps = this.options.production
+      ? ""
+      : `__self: this, __source: ${this.getDevSource(elementLocationCode)}`;
+    if (!this.tokens.matches1(tt.jsxName) && !this.tokens.matches1(tt.braceL)) {
+      if (devProps) {
+        this.tokens.appendCode(`, {${devProps}}`);
+      } else {
+        this.tokens.appendCode(`, null`);
+      }
+      return;
+    }
+    this.tokens.appendCode(`, {`);
+    this.processProps(false);
+    if (devProps) {
+      this.tokens.appendCode(` ${devProps}}`);
+    } else {
+      this.tokens.appendCode("}");
+    }
+  }
+
+  /**
+   * Transform the core part of the props, assuming that a { has already been
+   * inserted before us and that a } will be inserted after us.
+   *
+   * If extractKeyCode is true (i.e. when using any jsx... function), any prop
+   * named "key" has its code captured and returned rather than being emitted to
+   * the output code. This shifts line numbers, and emitting the code later will
+   * correct line numbers again. If no key is found or if extractKeyCode is
+   * false, this function returns null.
+   */
+  processProps(extractKeyCode) {
+    let keyCode = null;
+    while (true) {
+      if (this.tokens.matches2(tt.jsxName, tt.eq)) {
+        // This is a regular key={value} or key="value" prop.
+        const propName = this.tokens.identifierName();
+        if (extractKeyCode && propName === "key") {
+          if (keyCode !== null) {
+            // The props list has multiple keys. Different implementations are
+            // inconsistent about what to do here: as of this writing, Babel and
+            // swc keep the *last* key and completely remove the rest, while
+            // TypeScript uses the *first* key and leaves the others as regular
+            // props. The React team collaborated with Babel on the
+            // implementation of this behavior, so presumably the Babel behavior
+            // is the one to use.
+            // Since we won't ever be emitting the previous key code, we need to
+            // at least emit its newlines here so that the line numbers match up
+            // in the long run.
+            this.tokens.appendCode(keyCode.replace(/[^\n]/g, ""));
+          }
+          // key
+          this.tokens.removeToken();
+          // =
+          this.tokens.removeToken();
+          const snapshot = this.tokens.snapshot();
+          this.processPropValue();
+          keyCode = this.tokens.dangerouslyGetAndRemoveCodeSinceSnapshot(snapshot);
+          // Don't add a comma
+          continue;
+        } else {
+          this.processPropName(propName);
+          this.tokens.replaceToken(": ");
+          this.processPropValue();
+        }
+      } else if (this.tokens.matches1(tt.jsxName)) {
+        // This is a shorthand prop like <input disabled />.
+        const propName = this.tokens.identifierName();
+        this.processPropName(propName);
+        this.tokens.appendCode(": true");
+      } else if (this.tokens.matches1(tt.braceL)) {
+        // This is prop spread, like <div {...getProps()}>, which we can pass
+        // through fairly directly as an object spread.
+        this.tokens.replaceToken("");
+        this.rootTransformer.processBalancedCode();
+        this.tokens.replaceToken("");
+      } else {
+        break;
+      }
+      this.tokens.appendCode(",");
+    }
+    return keyCode;
+  }
+
+  processPropName(propName) {
+    if (propName.includes("-")) {
+      this.tokens.replaceToken(`'${propName}'`);
+    } else {
+      this.tokens.copyToken();
+    }
+  }
+
+  processPropValue() {
+    if (this.tokens.matches1(tt.braceL)) {
+      this.tokens.replaceToken("");
+      this.rootTransformer.processBalancedCode();
+      this.tokens.replaceToken("");
+    } else if (this.tokens.matches1(tt.jsxTagStart)) {
+      this.processJSXTag();
+    } else {
+      this.processStringPropValue();
+    }
+  }
+
+  processStringPropValue() {
+    const token = this.tokens.currentToken();
+    const valueCode = this.tokens.code.slice(token.start + 1, token.end - 1);
+    const replacementCode = formatJSXTextReplacement(valueCode);
+    const literalCode = formatJSXStringValueLiteral(valueCode);
+    this.tokens.replaceToken(literalCode + replacementCode);
+  }
+
+  /**
+   * Starting in the middle of the props object literal, produce an additional
+   * prop for the children and close the object literal.
+   */
+  processAutomaticChildrenAndEndProps(jsxRole) {
+    if (jsxRole === JSXRole.StaticChildren) {
+      this.tokens.appendCode(" children: [");
+      this.processChildren(false);
+      this.tokens.appendCode("]}");
+    } else {
+      // The parser information tells us whether we will see a real child or if
+      // all remaining children (if any) will resolve to empty. If there are no
+      // non-empty children, don't emit a children prop at all, but still
+      // process children so that we properly transform the code into nothing.
+      if (jsxRole === JSXRole.OneChild) {
+        this.tokens.appendCode(" children: ");
+      }
+      this.processChildren(false);
+      this.tokens.appendCode("}");
+    }
+  }
+
+  /**
+   * Transform children into a comma-separated list, which will be either
+   * arguments to createElement or array elements of a children prop.
+   */
+  processChildren(needsInitialComma) {
+    let needsComma = needsInitialComma;
+    while (true) {
+      if (this.tokens.matches2(tt.jsxTagStart, tt.slash)) {
+        // Closing tag, so no more children.
+        return;
+      }
+      let didEmitElement = false;
+      if (this.tokens.matches1(tt.braceL)) {
+        if (this.tokens.matches2(tt.braceL, tt.braceR)) {
+          // Empty interpolations and comment-only interpolations are allowed
+          // and don't create an extra child arg.
+          this.tokens.replaceToken("");
+          this.tokens.replaceToken("");
+        } else {
+          // Interpolated expression.
+          this.tokens.replaceToken(needsComma ? ", " : "");
+          this.rootTransformer.processBalancedCode();
+          this.tokens.replaceToken("");
+          didEmitElement = true;
+        }
+      } else if (this.tokens.matches1(tt.jsxTagStart)) {
+        // Child JSX element
+        this.tokens.appendCode(needsComma ? ", " : "");
+        this.processJSXTag();
+        didEmitElement = true;
+      } else if (this.tokens.matches1(tt.jsxText) || this.tokens.matches1(tt.jsxEmptyText)) {
+        didEmitElement = this.processChildTextElement(needsComma);
+      } else {
+        throw new Error("Unexpected token when processing JSX children.");
+      }
+      if (didEmitElement) {
+        needsComma = true;
+      }
+    }
+  }
+
+  /**
+   * Turn a JSX text element into a string literal, or nothing at all if the JSX
+   * text resolves to the empty string.
+   *
+   * Returns true if a string literal is emitted, false otherwise.
+   */
+  processChildTextElement(needsComma) {
+    const token = this.tokens.currentToken();
+    const valueCode = this.tokens.code.slice(token.start, token.end);
+    const replacementCode = formatJSXTextReplacement(valueCode);
+    const literalCode = formatJSXTextLiteral(valueCode);
+    if (literalCode === '""') {
+      this.tokens.replaceToken(replacementCode);
+      return false;
+    } else {
+      this.tokens.replaceToken(`${needsComma ? ", " : ""}${literalCode}${replacementCode}`);
+      return true;
+    }
+  }
+
+  getDevSource(elementLocationCode) {
+    return `{fileName: ${this.getFilenameVarName()}, ${elementLocationCode}}`;
+  }
+
+  getFilenameVarName() {
+    if (!this.filenameVarName) {
+      this.filenameVarName = this.nameManager.claimFreeName("_jsxFileName");
+    }
+    return this.filenameVarName;
+  }
+}
+
+/**
+ * Spec for identifiers: https://tc39.github.io/ecma262/#prod-IdentifierStart.
+ *
+ * Really only treat anything starting with a-z as tag names.  `_`, `$`, `é`
+ * should be treated as component names
+ */
+export function startsWithLowerCase(s) {
+  const firstChar = s.charCodeAt(0);
+  return firstChar >= charCodes.lowercaseA && firstChar <= charCodes.lowercaseZ;
+}
+
+/**
+ * Turn the given jsxText string into a JS string literal. Leading and trailing
+ * whitespace on lines is removed, except immediately after the open-tag and
+ * before the close-tag. Empty lines are completely removed, and spaces are
+ * added between lines after that.
+ *
+ * We use JSON.stringify to introduce escape characters as necessary, and trim
+ * the start and end of each line and remove blank lines.
+ */
+function formatJSXTextLiteral(text) {
+  let result = "";
+  let whitespace = "";
+
+  let isInInitialLineWhitespace = false;
+  let seenNonWhitespace = false;
+  for (let i = 0; i < text.length; i++) {
+    const c = text[i];
+    if (c === " " || c === "\t" || c === "\r") {
+      if (!isInInitialLineWhitespace) {
+        whitespace += c;
+      }
+    } else if (c === "\n") {
+      whitespace = "";
+      isInInitialLineWhitespace = true;
+    } else {
+      if (seenNonWhitespace && isInInitialLineWhitespace) {
+        result += " ";
+      }
+      result += whitespace;
+      whitespace = "";
+      if (c === "&") {
+        const {entity, newI} = processEntity(text, i + 1);
+        i = newI - 1;
+        result += entity;
+      } else {
+        result += c;
+      }
+      seenNonWhitespace = true;
+      isInInitialLineWhitespace = false;
+    }
+  }
+  if (!isInInitialLineWhitespace) {
+    result += whitespace;
+  }
+  return JSON.stringify(result);
+}
+
+/**
+ * Produce the code that should be printed after the JSX text string literal,
+ * with most content removed, but all newlines preserved and all spacing at the
+ * end preserved.
+ */
+function formatJSXTextReplacement(text) {
+  let numNewlines = 0;
+  let numSpaces = 0;
+  for (const c of text) {
+    if (c === "\n") {
+      numNewlines++;
+      numSpaces = 0;
+    } else if (c === " ") {
+      numSpaces++;
+    }
+  }
+  return "\n".repeat(numNewlines) + " ".repeat(numSpaces);
+}
+
+/**
+ * Format a string in the value position of a JSX prop.
+ *
+ * Use the same implementation as convertAttribute from
+ * babel-helper-builder-react-jsx.
+ */
+function formatJSXStringValueLiteral(text) {
+  let result = "";
+  for (let i = 0; i < text.length; i++) {
+    const c = text[i];
+    if (c === "\n") {
+      if (/\s/.test(text[i + 1])) {
+        result += " ";
+        while (i < text.length && /\s/.test(text[i + 1])) {
+          i++;
+        }
+      } else {
+        result += "\n";
+      }
+    } else if (c === "&") {
+      const {entity, newI} = processEntity(text, i + 1);
+      result += entity;
+      i = newI - 1;
+    } else {
+      result += c;
+    }
+  }
+  return JSON.stringify(result);
+}
+
+/**
+ * Starting at a &, see if there's an HTML entity (specified by name, decimal
+ * char code, or hex char code) and return it if so.
+ *
+ * Modified from jsxReadString in babel-parser.
+ */
+function processEntity(text, indexAfterAmpersand) {
+  let str = "";
+  let count = 0;
+  let entity;
+  let i = indexAfterAmpersand;
+
+  if (text[i] === "#") {
+    let radix = 10;
+    i++;
+    let numStart;
+    if (text[i] === "x") {
+      radix = 16;
+      i++;
+      numStart = i;
+      while (i < text.length && isHexDigit(text.charCodeAt(i))) {
+        i++;
+      }
+    } else {
+      numStart = i;
+      while (i < text.length && isDecimalDigit(text.charCodeAt(i))) {
+        i++;
+      }
+    }
+    if (text[i] === ";") {
+      const numStr = text.slice(numStart, i);
+      if (numStr) {
+        i++;
+        entity = String.fromCodePoint(parseInt(numStr, radix));
+      }
+    }
+  } else {
+    while (i < text.length && count++ < 10) {
+      const ch = text[i];
+      i++;
+      if (ch === ";") {
+        entity = XHTMLEntities.get(str);
+        break;
+      }
+      str += ch;
+    }
+  }
+
+  if (!entity) {
+    return {entity: "&", newI: indexAfterAmpersand};
+  }
+  return {entity, newI: i};
+}
+
+function isDecimalDigit(code) {
+  return code >= charCodes.digit0 && code <= charCodes.digit9;
+}
+
+function isHexDigit(code) {
+  return (
+    (code >= charCodes.digit0 && code <= charCodes.digit9) ||
+    (code >= charCodes.lowercaseA && code <= charCodes.lowercaseF) ||
+    (code >= charCodes.uppercaseA && code <= charCodes.uppercaseF)
+  );
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/JestHoistTransformer.js b/node_modules/sucrase/dist/esm/transformers/JestHoistTransformer.js
new file mode 100644
index 0000000..8f45d06
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/JestHoistTransformer.js
@@ -0,0 +1,111 @@
+ function _optionalChain(ops) { let lastAccessLHS = undefined; let value = ops[0]; let i = 1; while (i < ops.length) { const op = ops[i]; const fn = ops[i + 1]; i += 2; if ((op === 'optionalAccess' || op === 'optionalCall') && value == null) { return undefined; } if (op === 'access' || op === 'optionalAccess') { lastAccessLHS = value; value = fn(value); } else if (op === 'call' || op === 'optionalCall') { value = fn((...args) => value.call(lastAccessLHS, ...args)); lastAccessLHS = undefined; } } return value; }
+
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+import Transformer from "./Transformer";
+
+const JEST_GLOBAL_NAME = "jest";
+const HOISTED_METHODS = ["mock", "unmock", "enableAutomock", "disableAutomock"];
+
+/**
+ * Implementation of babel-plugin-jest-hoist, which hoists up some jest method
+ * calls above the imports to allow them to override other imports.
+ *
+ * To preserve line numbers, rather than directly moving the jest.mock code, we
+ * wrap each invocation in a function statement and then call the function from
+ * the top of the file.
+ */
+export default class JestHoistTransformer extends Transformer {
+    __init() {this.hoistedFunctionNames = []}
+
+  constructor(
+     rootTransformer,
+     tokens,
+     nameManager,
+     importProcessor,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.nameManager = nameManager;this.importProcessor = importProcessor;JestHoistTransformer.prototype.__init.call(this);;
+  }
+
+  process() {
+    if (
+      this.tokens.currentToken().scopeDepth === 0 &&
+      this.tokens.matches4(tt.name, tt.dot, tt.name, tt.parenL) &&
+      this.tokens.identifierName() === JEST_GLOBAL_NAME
+    ) {
+      // TODO: This only works if imports transform is active, which it will be for jest.
+      //       But if jest adds module support and we no longer need the import transform, this needs fixing.
+      if (_optionalChain([this, 'access', _ => _.importProcessor, 'optionalAccess', _2 => _2.getGlobalNames, 'call', _3 => _3(), 'optionalAccess', _4 => _4.has, 'call', _5 => _5(JEST_GLOBAL_NAME)])) {
+        return false;
+      }
+      return this.extractHoistedCalls();
+    }
+
+    return false;
+  }
+
+  getHoistedCode() {
+    if (this.hoistedFunctionNames.length > 0) {
+      // This will be placed before module interop code, but that's fine since
+      // imports aren't allowed in module mock factories.
+      return this.hoistedFunctionNames.map((name) => `${name}();`).join("");
+    }
+    return "";
+  }
+
+  /**
+   * Extracts any methods calls on the jest-object that should be hoisted.
+   *
+   * According to the jest docs, https://jestjs.io/docs/en/jest-object#jestmockmodulename-factory-options,
+   * mock, unmock, enableAutomock, disableAutomock, are the methods that should be hoisted.
+   *
+   * We do not apply the same checks of the arguments as babel-plugin-jest-hoist does.
+   */
+   extractHoistedCalls() {
+    // We're handling a chain of calls where `jest` may or may not need to be inserted for each call
+    // in the chain, so remove the initial `jest` to make the loop implementation cleaner.
+    this.tokens.removeToken();
+    // Track some state so that multiple non-hoisted chained calls in a row keep their chaining
+    // syntax.
+    let followsNonHoistedJestCall = false;
+
+    // Iterate through all chained calls on the jest object.
+    while (this.tokens.matches3(tt.dot, tt.name, tt.parenL)) {
+      const methodName = this.tokens.identifierNameAtIndex(this.tokens.currentIndex() + 1);
+      const shouldHoist = HOISTED_METHODS.includes(methodName);
+      if (shouldHoist) {
+        // We've matched e.g. `.mock(...)` or similar call.
+        // Replace the initial `.` with `function __jestHoist(){jest.`
+        const hoistedFunctionName = this.nameManager.claimFreeName("__jestHoist");
+        this.hoistedFunctionNames.push(hoistedFunctionName);
+        this.tokens.replaceToken(`function ${hoistedFunctionName}(){${JEST_GLOBAL_NAME}.`);
+        this.tokens.copyToken();
+        this.tokens.copyToken();
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(tt.parenR);
+        this.tokens.appendCode(";}");
+        followsNonHoistedJestCall = false;
+      } else {
+        // This is a non-hoisted method, so just transform the code as usual.
+        if (followsNonHoistedJestCall) {
+          // If we didn't hoist the previous call, we can leave the code as-is to chain off of the
+          // previous method call. It's important to preserve the code here because we don't know
+          // for sure that the method actually returned the jest object for chaining.
+          this.tokens.copyToken();
+        } else {
+          // If we hoisted the previous call, we know it returns the jest object back, so we insert
+          // the identifier `jest` to continue the chain.
+          this.tokens.replaceToken(`${JEST_GLOBAL_NAME}.`);
+        }
+        this.tokens.copyToken();
+        this.tokens.copyToken();
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(tt.parenR);
+        followsNonHoistedJestCall = true;
+      }
+    }
+
+    return true;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/NumericSeparatorTransformer.js b/node_modules/sucrase/dist/esm/transformers/NumericSeparatorTransformer.js
new file mode 100644
index 0000000..0cb01a1
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/NumericSeparatorTransformer.js
@@ -0,0 +1,20 @@
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import Transformer from "./Transformer";
+
+export default class NumericSeparatorTransformer extends Transformer {
+  constructor( tokens) {
+    super();this.tokens = tokens;;
+  }
+
+  process() {
+    if (this.tokens.matches1(tt.num)) {
+      const code = this.tokens.currentTokenCode();
+      if (code.includes("_")) {
+        this.tokens.replaceToken(code.replace(/_/g, ""));
+        return true;
+      }
+    }
+    return false;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/OptionalCatchBindingTransformer.js b/node_modules/sucrase/dist/esm/transformers/OptionalCatchBindingTransformer.js
new file mode 100644
index 0000000..547273b
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/OptionalCatchBindingTransformer.js
@@ -0,0 +1,19 @@
+
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import Transformer from "./Transformer";
+
+export default class OptionalCatchBindingTransformer extends Transformer {
+  constructor( tokens,  nameManager) {
+    super();this.tokens = tokens;this.nameManager = nameManager;;
+  }
+
+  process() {
+    if (this.tokens.matches2(tt._catch, tt.braceL)) {
+      this.tokens.copyToken();
+      this.tokens.appendCode(` (${this.nameManager.claimFreeName("e")})`);
+      return true;
+    }
+    return false;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/OptionalChainingNullishTransformer.js b/node_modules/sucrase/dist/esm/transformers/OptionalChainingNullishTransformer.js
new file mode 100644
index 0000000..571d97f
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/OptionalChainingNullishTransformer.js
@@ -0,0 +1,155 @@
+
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import Transformer from "./Transformer";
+
+/**
+ * Transformer supporting the optional chaining and nullish coalescing operators.
+ *
+ * Tech plan here:
+ * https://github.com/alangpierce/sucrase/wiki/Sucrase-Optional-Chaining-and-Nullish-Coalescing-Technical-Plan
+ *
+ * The prefix and suffix code snippets are handled by TokenProcessor, and this transformer handles
+ * the operators themselves.
+ */
+export default class OptionalChainingNullishTransformer extends Transformer {
+  constructor( tokens,  nameManager) {
+    super();this.tokens = tokens;this.nameManager = nameManager;;
+  }
+
+  process() {
+    if (this.tokens.matches1(tt.nullishCoalescing)) {
+      const token = this.tokens.currentToken();
+      if (this.tokens.tokens[token.nullishStartIndex].isAsyncOperation) {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(", async () => (");
+      } else {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(", () => (");
+      }
+      return true;
+    }
+    if (this.tokens.matches1(tt._delete)) {
+      const nextToken = this.tokens.tokenAtRelativeIndex(1);
+      if (nextToken.isOptionalChainStart) {
+        this.tokens.removeInitialToken();
+        return true;
+      }
+    }
+    const token = this.tokens.currentToken();
+    const chainStart = token.subscriptStartIndex;
+    if (
+      chainStart != null &&
+      this.tokens.tokens[chainStart].isOptionalChainStart &&
+      // Super subscripts can't be optional (since super is never null/undefined), and the syntax
+      // relies on the subscript being intact, so leave this token alone.
+      this.tokens.tokenAtRelativeIndex(-1).type !== tt._super
+    ) {
+      const param = this.nameManager.claimFreeName("_");
+      let arrowStartSnippet;
+      if (
+        chainStart > 0 &&
+        this.tokens.matches1AtIndex(chainStart - 1, tt._delete) &&
+        this.isLastSubscriptInChain()
+      ) {
+        // Delete operations are special: we already removed the delete keyword, and to still
+        // perform a delete, we need to insert a delete in the very last part of the chain, which
+        // in correct code will always be a property access.
+        arrowStartSnippet = `${param} => delete ${param}`;
+      } else {
+        arrowStartSnippet = `${param} => ${param}`;
+      }
+      if (this.tokens.tokens[chainStart].isAsyncOperation) {
+        arrowStartSnippet = `async ${arrowStartSnippet}`;
+      }
+      if (
+        this.tokens.matches2(tt.questionDot, tt.parenL) ||
+        this.tokens.matches2(tt.questionDot, tt.lessThan)
+      ) {
+        if (this.justSkippedSuper()) {
+          this.tokens.appendCode(".bind(this)");
+        }
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'optionalCall', ${arrowStartSnippet}`);
+      } else if (this.tokens.matches2(tt.questionDot, tt.bracketL)) {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'optionalAccess', ${arrowStartSnippet}`);
+      } else if (this.tokens.matches1(tt.questionDot)) {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'optionalAccess', ${arrowStartSnippet}.`);
+      } else if (this.tokens.matches1(tt.dot)) {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'access', ${arrowStartSnippet}.`);
+      } else if (this.tokens.matches1(tt.bracketL)) {
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'access', ${arrowStartSnippet}[`);
+      } else if (this.tokens.matches1(tt.parenL)) {
+        if (this.justSkippedSuper()) {
+          this.tokens.appendCode(".bind(this)");
+        }
+        this.tokens.replaceTokenTrimmingLeftWhitespace(`, 'call', ${arrowStartSnippet}(`);
+      } else {
+        throw new Error("Unexpected subscript operator in optional chain.");
+      }
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Determine if the current token is the last of its chain, so that we know whether it's eligible
+   * to have a delete op inserted.
+   *
+   * We can do this by walking forward until we determine one way or another. Each
+   * isOptionalChainStart token must be paired with exactly one isOptionalChainEnd token after it in
+   * a nesting way, so we can track depth and walk to the end of the chain (the point where the
+   * depth goes negative) and see if any other subscript token is after us in the chain.
+   */
+  isLastSubscriptInChain() {
+    let depth = 0;
+    for (let i = this.tokens.currentIndex() + 1; ; i++) {
+      if (i >= this.tokens.tokens.length) {
+        throw new Error("Reached the end of the code while finding the end of the access chain.");
+      }
+      if (this.tokens.tokens[i].isOptionalChainStart) {
+        depth++;
+      } else if (this.tokens.tokens[i].isOptionalChainEnd) {
+        depth--;
+      }
+      if (depth < 0) {
+        return true;
+      }
+
+      // This subscript token is a later one in the same chain.
+      if (depth === 0 && this.tokens.tokens[i].subscriptStartIndex != null) {
+        return false;
+      }
+    }
+  }
+
+  /**
+   * Determine if we are the open-paren in an expression like super.a()?.b.
+   *
+   * We can do this by walking backward to find the previous subscript. If that subscript was
+   * preceded by a super, then we must be the subscript after it, so if this is a call expression,
+   * we'll need to attach the right context.
+   */
+  justSkippedSuper() {
+    let depth = 0;
+    let index = this.tokens.currentIndex() - 1;
+    while (true) {
+      if (index < 0) {
+        throw new Error(
+          "Reached the start of the code while finding the start of the access chain.",
+        );
+      }
+      if (this.tokens.tokens[index].isOptionalChainStart) {
+        depth--;
+      } else if (this.tokens.tokens[index].isOptionalChainEnd) {
+        depth++;
+      }
+      if (depth < 0) {
+        return false;
+      }
+
+      // This subscript token is a later one in the same chain.
+      if (depth === 0 && this.tokens.tokens[index].subscriptStartIndex != null) {
+        return this.tokens.tokens[index - 1].type === tt._super;
+      }
+      index--;
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/ReactDisplayNameTransformer.js b/node_modules/sucrase/dist/esm/transformers/ReactDisplayNameTransformer.js
new file mode 100644
index 0000000..0c44c81
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/ReactDisplayNameTransformer.js
@@ -0,0 +1,160 @@
+
+
+import {IdentifierRole} from "../parser/tokenizer";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+import Transformer from "./Transformer";
+
+/**
+ * Implementation of babel-plugin-transform-react-display-name, which adds a
+ * display name to usages of React.createClass and createReactClass.
+ */
+export default class ReactDisplayNameTransformer extends Transformer {
+  constructor(
+     rootTransformer,
+     tokens,
+     importProcessor,
+     options,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.importProcessor = importProcessor;this.options = options;;
+  }
+
+  process() {
+    const startIndex = this.tokens.currentIndex();
+    if (this.tokens.identifierName() === "createReactClass") {
+      const newName =
+        this.importProcessor && this.importProcessor.getIdentifierReplacement("createReactClass");
+      if (newName) {
+        this.tokens.replaceToken(`(0, ${newName})`);
+      } else {
+        this.tokens.copyToken();
+      }
+      this.tryProcessCreateClassCall(startIndex);
+      return true;
+    }
+    if (
+      this.tokens.matches3(tt.name, tt.dot, tt.name) &&
+      this.tokens.identifierName() === "React" &&
+      this.tokens.identifierNameAtIndex(this.tokens.currentIndex() + 2) === "createClass"
+    ) {
+      const newName = this.importProcessor
+        ? this.importProcessor.getIdentifierReplacement("React") || "React"
+        : "React";
+      if (newName) {
+        this.tokens.replaceToken(newName);
+        this.tokens.copyToken();
+        this.tokens.copyToken();
+      } else {
+        this.tokens.copyToken();
+        this.tokens.copyToken();
+        this.tokens.copyToken();
+      }
+      this.tryProcessCreateClassCall(startIndex);
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * This is called with the token position at the open-paren.
+   */
+   tryProcessCreateClassCall(startIndex) {
+    const displayName = this.findDisplayName(startIndex);
+    if (!displayName) {
+      return;
+    }
+
+    if (this.classNeedsDisplayName()) {
+      this.tokens.copyExpectedToken(tt.parenL);
+      this.tokens.copyExpectedToken(tt.braceL);
+      this.tokens.appendCode(`displayName: '${displayName}',`);
+      this.rootTransformer.processBalancedCode();
+      this.tokens.copyExpectedToken(tt.braceR);
+      this.tokens.copyExpectedToken(tt.parenR);
+    }
+  }
+
+   findDisplayName(startIndex) {
+    if (startIndex < 2) {
+      return null;
+    }
+    if (this.tokens.matches2AtIndex(startIndex - 2, tt.name, tt.eq)) {
+      // This is an assignment (or declaration) and the LHS is either an identifier or a member
+      // expression ending in an identifier, so use that identifier name.
+      return this.tokens.identifierNameAtIndex(startIndex - 2);
+    }
+    if (
+      startIndex >= 2 &&
+      this.tokens.tokens[startIndex - 2].identifierRole === IdentifierRole.ObjectKey
+    ) {
+      // This is an object literal value.
+      return this.tokens.identifierNameAtIndex(startIndex - 2);
+    }
+    if (this.tokens.matches2AtIndex(startIndex - 2, tt._export, tt._default)) {
+      return this.getDisplayNameFromFilename();
+    }
+    return null;
+  }
+
+   getDisplayNameFromFilename() {
+    const filePath = this.options.filePath || "unknown";
+    const pathSegments = filePath.split("/");
+    const filename = pathSegments[pathSegments.length - 1];
+    const dotIndex = filename.lastIndexOf(".");
+    const baseFilename = dotIndex === -1 ? filename : filename.slice(0, dotIndex);
+    if (baseFilename === "index" && pathSegments[pathSegments.length - 2]) {
+      return pathSegments[pathSegments.length - 2];
+    } else {
+      return baseFilename;
+    }
+  }
+
+  /**
+   * We only want to add a display name when this is a function call containing
+   * one argument, which is an object literal without `displayName` as an
+   * existing key.
+   */
+   classNeedsDisplayName() {
+    let index = this.tokens.currentIndex();
+    if (!this.tokens.matches2(tt.parenL, tt.braceL)) {
+      return false;
+    }
+    // The block starts on the {, and we expect any displayName key to be in
+    // that context. We need to ignore other other contexts to avoid matching
+    // nested displayName keys.
+    const objectStartIndex = index + 1;
+    const objectContextId = this.tokens.tokens[objectStartIndex].contextId;
+    if (objectContextId == null) {
+      throw new Error("Expected non-null context ID on object open-brace.");
+    }
+
+    for (; index < this.tokens.tokens.length; index++) {
+      const token = this.tokens.tokens[index];
+      if (token.type === tt.braceR && token.contextId === objectContextId) {
+        index++;
+        break;
+      }
+
+      if (
+        this.tokens.identifierNameAtIndex(index) === "displayName" &&
+        this.tokens.tokens[index].identifierRole === IdentifierRole.ObjectKey &&
+        token.contextId === objectContextId
+      ) {
+        // We found a displayName key, so bail out.
+        return false;
+      }
+    }
+
+    if (index === this.tokens.tokens.length) {
+      throw new Error("Unexpected end of input when processing React class.");
+    }
+
+    // If we got this far, we know we have createClass with an object with no
+    // display name, so we want to proceed as long as that was the only argument.
+    return (
+      this.tokens.matches1AtIndex(index, tt.parenR) ||
+      this.tokens.matches2AtIndex(index, tt.comma, tt.parenR)
+    );
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/ReactHotLoaderTransformer.js b/node_modules/sucrase/dist/esm/transformers/ReactHotLoaderTransformer.js
new file mode 100644
index 0000000..873902e
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/ReactHotLoaderTransformer.js
@@ -0,0 +1,69 @@
+import {IdentifierRole, isTopLevelDeclaration} from "../parser/tokenizer";
+
+import Transformer from "./Transformer";
+
+export default class ReactHotLoaderTransformer extends Transformer {
+   __init() {this.extractedDefaultExportName = null}
+
+  constructor( tokens,  filePath) {
+    super();this.tokens = tokens;this.filePath = filePath;ReactHotLoaderTransformer.prototype.__init.call(this);;
+  }
+
+  setExtractedDefaultExportName(extractedDefaultExportName) {
+    this.extractedDefaultExportName = extractedDefaultExportName;
+  }
+
+  getPrefixCode() {
+    return `
+      (function () {
+        var enterModule = require('react-hot-loader').enterModule;
+        enterModule && enterModule(module);
+      })();`
+      .replace(/\s+/g, " ")
+      .trim();
+  }
+
+  getSuffixCode() {
+    const topLevelNames = new Set();
+    for (const token of this.tokens.tokens) {
+      if (
+        !token.isType &&
+        isTopLevelDeclaration(token) &&
+        token.identifierRole !== IdentifierRole.ImportDeclaration
+      ) {
+        topLevelNames.add(this.tokens.identifierNameForToken(token));
+      }
+    }
+    const namesToRegister = Array.from(topLevelNames).map((name) => ({
+      variableName: name,
+      uniqueLocalName: name,
+    }));
+    if (this.extractedDefaultExportName) {
+      namesToRegister.push({
+        variableName: this.extractedDefaultExportName,
+        uniqueLocalName: "default",
+      });
+    }
+    return `
+;(function () {
+  var reactHotLoader = require('react-hot-loader').default;
+  var leaveModule = require('react-hot-loader').leaveModule;
+  if (!reactHotLoader) {
+    return;
+  }
+${namesToRegister
+  .map(
+    ({variableName, uniqueLocalName}) =>
+      `  reactHotLoader.register(${variableName}, "${uniqueLocalName}", ${JSON.stringify(
+        this.filePath || "",
+      )});`,
+  )
+  .join("\n")}
+  leaveModule(module);
+})();`;
+  }
+
+  process() {
+    return false;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/RootTransformer.js b/node_modules/sucrase/dist/esm/transformers/RootTransformer.js
new file mode 100644
index 0000000..c7a83fe
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/RootTransformer.js
@@ -0,0 +1,462 @@
+
+
+
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import getClassInfo, {} from "../util/getClassInfo";
+import CJSImportTransformer from "./CJSImportTransformer";
+import ESMImportTransformer from "./ESMImportTransformer";
+import FlowTransformer from "./FlowTransformer";
+import JestHoistTransformer from "./JestHoistTransformer";
+import JSXTransformer from "./JSXTransformer";
+import NumericSeparatorTransformer from "./NumericSeparatorTransformer";
+import OptionalCatchBindingTransformer from "./OptionalCatchBindingTransformer";
+import OptionalChainingNullishTransformer from "./OptionalChainingNullishTransformer";
+import ReactDisplayNameTransformer from "./ReactDisplayNameTransformer";
+import ReactHotLoaderTransformer from "./ReactHotLoaderTransformer";
+
+import TypeScriptTransformer from "./TypeScriptTransformer";
+
+
+
+
+
+
+
+
+export default class RootTransformer {
+   __init() {this.transformers = []}
+  
+  
+   __init2() {this.generatedVariables = []}
+  
+  
+  
+  
+
+  constructor(
+    sucraseContext,
+    transforms,
+    enableLegacyBabel5ModuleInterop,
+    options,
+  ) {;RootTransformer.prototype.__init.call(this);RootTransformer.prototype.__init2.call(this);
+    this.nameManager = sucraseContext.nameManager;
+    this.helperManager = sucraseContext.helperManager;
+    const {tokenProcessor, importProcessor} = sucraseContext;
+    this.tokens = tokenProcessor;
+    this.isImportsTransformEnabled = transforms.includes("imports");
+    this.isReactHotLoaderTransformEnabled = transforms.includes("react-hot-loader");
+    this.disableESTransforms = Boolean(options.disableESTransforms);
+
+    if (!options.disableESTransforms) {
+      this.transformers.push(
+        new OptionalChainingNullishTransformer(tokenProcessor, this.nameManager),
+      );
+      this.transformers.push(new NumericSeparatorTransformer(tokenProcessor));
+      this.transformers.push(new OptionalCatchBindingTransformer(tokenProcessor, this.nameManager));
+    }
+
+    if (transforms.includes("jsx")) {
+      if (options.jsxRuntime !== "preserve") {
+        this.transformers.push(
+          new JSXTransformer(this, tokenProcessor, importProcessor, this.nameManager, options),
+        );
+      }
+      this.transformers.push(
+        new ReactDisplayNameTransformer(this, tokenProcessor, importProcessor, options),
+      );
+    }
+
+    let reactHotLoaderTransformer = null;
+    if (transforms.includes("react-hot-loader")) {
+      if (!options.filePath) {
+        throw new Error("filePath is required when using the react-hot-loader transform.");
+      }
+      reactHotLoaderTransformer = new ReactHotLoaderTransformer(tokenProcessor, options.filePath);
+      this.transformers.push(reactHotLoaderTransformer);
+    }
+
+    // Note that we always want to enable the imports transformer, even when the import transform
+    // itself isn't enabled, since we need to do type-only import pruning for both Flow and
+    // TypeScript.
+    if (transforms.includes("imports")) {
+      if (importProcessor === null) {
+        throw new Error("Expected non-null importProcessor with imports transform enabled.");
+      }
+      this.transformers.push(
+        new CJSImportTransformer(
+          this,
+          tokenProcessor,
+          importProcessor,
+          this.nameManager,
+          this.helperManager,
+          reactHotLoaderTransformer,
+          enableLegacyBabel5ModuleInterop,
+          Boolean(options.enableLegacyTypeScriptModuleInterop),
+          transforms.includes("typescript"),
+          transforms.includes("flow"),
+          Boolean(options.preserveDynamicImport),
+          Boolean(options.keepUnusedImports),
+        ),
+      );
+    } else {
+      this.transformers.push(
+        new ESMImportTransformer(
+          tokenProcessor,
+          this.nameManager,
+          this.helperManager,
+          reactHotLoaderTransformer,
+          transforms.includes("typescript"),
+          transforms.includes("flow"),
+          Boolean(options.keepUnusedImports),
+          options,
+        ),
+      );
+    }
+
+    if (transforms.includes("flow")) {
+      this.transformers.push(
+        new FlowTransformer(this, tokenProcessor, transforms.includes("imports")),
+      );
+    }
+    if (transforms.includes("typescript")) {
+      this.transformers.push(
+        new TypeScriptTransformer(this, tokenProcessor, transforms.includes("imports")),
+      );
+    }
+    if (transforms.includes("jest")) {
+      this.transformers.push(
+        new JestHoistTransformer(this, tokenProcessor, this.nameManager, importProcessor),
+      );
+    }
+  }
+
+  transform() {
+    this.tokens.reset();
+    this.processBalancedCode();
+    const shouldAddUseStrict = this.isImportsTransformEnabled;
+    // "use strict" always needs to be first, so override the normal transformer order.
+    let prefix = shouldAddUseStrict ? '"use strict";' : "";
+    for (const transformer of this.transformers) {
+      prefix += transformer.getPrefixCode();
+    }
+    prefix += this.helperManager.emitHelpers();
+    prefix += this.generatedVariables.map((v) => ` var ${v};`).join("");
+    for (const transformer of this.transformers) {
+      prefix += transformer.getHoistedCode();
+    }
+    let suffix = "";
+    for (const transformer of this.transformers) {
+      suffix += transformer.getSuffixCode();
+    }
+    const result = this.tokens.finish();
+    let {code} = result;
+    if (code.startsWith("#!")) {
+      let newlineIndex = code.indexOf("\n");
+      if (newlineIndex === -1) {
+        newlineIndex = code.length;
+        code += "\n";
+      }
+      return {
+        code: code.slice(0, newlineIndex + 1) + prefix + code.slice(newlineIndex + 1) + suffix,
+        // The hashbang line has no tokens, so shifting the tokens to account
+        // for prefix can happen normally.
+        mappings: this.shiftMappings(result.mappings, prefix.length),
+      };
+    } else {
+      return {
+        code: prefix + code + suffix,
+        mappings: this.shiftMappings(result.mappings, prefix.length),
+      };
+    }
+  }
+
+  processBalancedCode() {
+    let braceDepth = 0;
+    let parenDepth = 0;
+    while (!this.tokens.isAtEnd()) {
+      if (this.tokens.matches1(tt.braceL) || this.tokens.matches1(tt.dollarBraceL)) {
+        braceDepth++;
+      } else if (this.tokens.matches1(tt.braceR)) {
+        if (braceDepth === 0) {
+          return;
+        }
+        braceDepth--;
+      }
+      if (this.tokens.matches1(tt.parenL)) {
+        parenDepth++;
+      } else if (this.tokens.matches1(tt.parenR)) {
+        if (parenDepth === 0) {
+          return;
+        }
+        parenDepth--;
+      }
+      this.processToken();
+    }
+  }
+
+  processToken() {
+    if (this.tokens.matches1(tt._class)) {
+      this.processClass();
+      return;
+    }
+    for (const transformer of this.transformers) {
+      const wasProcessed = transformer.process();
+      if (wasProcessed) {
+        return;
+      }
+    }
+    this.tokens.copyToken();
+  }
+
+  /**
+   * Skip past a class with a name and return that name.
+   */
+  processNamedClass() {
+    if (!this.tokens.matches2(tt._class, tt.name)) {
+      throw new Error("Expected identifier for exported class name.");
+    }
+    const name = this.tokens.identifierNameAtIndex(this.tokens.currentIndex() + 1);
+    this.processClass();
+    return name;
+  }
+
+  processClass() {
+    const classInfo = getClassInfo(this, this.tokens, this.nameManager, this.disableESTransforms);
+
+    // Both static and instance initializers need a class name to use to invoke the initializer, so
+    // assign to one if necessary.
+    const needsCommaExpression =
+      (classInfo.headerInfo.isExpression || !classInfo.headerInfo.className) &&
+      classInfo.staticInitializerNames.length + classInfo.instanceInitializerNames.length > 0;
+
+    let className = classInfo.headerInfo.className;
+    if (needsCommaExpression) {
+      className = this.nameManager.claimFreeName("_class");
+      this.generatedVariables.push(className);
+      this.tokens.appendCode(` (${className} =`);
+    }
+
+    const classToken = this.tokens.currentToken();
+    const contextId = classToken.contextId;
+    if (contextId == null) {
+      throw new Error("Expected class to have a context ID.");
+    }
+    this.tokens.copyExpectedToken(tt._class);
+    while (!this.tokens.matchesContextIdAndLabel(tt.braceL, contextId)) {
+      this.processToken();
+    }
+
+    this.processClassBody(classInfo, className);
+
+    const staticInitializerStatements = classInfo.staticInitializerNames.map(
+      (name) => `${className}.${name}()`,
+    );
+    if (needsCommaExpression) {
+      this.tokens.appendCode(
+        `, ${staticInitializerStatements.map((s) => `${s}, `).join("")}${className})`,
+      );
+    } else if (classInfo.staticInitializerNames.length > 0) {
+      this.tokens.appendCode(` ${staticInitializerStatements.map((s) => `${s};`).join(" ")}`);
+    }
+  }
+
+  /**
+   * We want to just handle class fields in all contexts, since TypeScript supports them. Later,
+   * when some JS implementations support class fields, this should be made optional.
+   */
+  processClassBody(classInfo, className) {
+    const {
+      headerInfo,
+      constructorInsertPos,
+      constructorInitializerStatements,
+      fields,
+      instanceInitializerNames,
+      rangesToRemove,
+    } = classInfo;
+    let fieldIndex = 0;
+    let rangeToRemoveIndex = 0;
+    const classContextId = this.tokens.currentToken().contextId;
+    if (classContextId == null) {
+      throw new Error("Expected non-null context ID on class.");
+    }
+    this.tokens.copyExpectedToken(tt.braceL);
+    if (this.isReactHotLoaderTransformEnabled) {
+      this.tokens.appendCode(
+        "__reactstandin__regenerateByEval(key, code) {this[key] = eval(code);}",
+      );
+    }
+
+    const needsConstructorInit =
+      constructorInitializerStatements.length + instanceInitializerNames.length > 0;
+
+    if (constructorInsertPos === null && needsConstructorInit) {
+      const constructorInitializersCode = this.makeConstructorInitCode(
+        constructorInitializerStatements,
+        instanceInitializerNames,
+        className,
+      );
+      if (headerInfo.hasSuperclass) {
+        const argsName = this.nameManager.claimFreeName("args");
+        this.tokens.appendCode(
+          `constructor(...${argsName}) { super(...${argsName}); ${constructorInitializersCode}; }`,
+        );
+      } else {
+        this.tokens.appendCode(`constructor() { ${constructorInitializersCode}; }`);
+      }
+    }
+
+    while (!this.tokens.matchesContextIdAndLabel(tt.braceR, classContextId)) {
+      if (fieldIndex < fields.length && this.tokens.currentIndex() === fields[fieldIndex].start) {
+        let needsCloseBrace = false;
+        if (this.tokens.matches1(tt.bracketL)) {
+          this.tokens.copyTokenWithPrefix(`${fields[fieldIndex].initializerName}() {this`);
+        } else if (this.tokens.matches1(tt.string) || this.tokens.matches1(tt.num)) {
+          this.tokens.copyTokenWithPrefix(`${fields[fieldIndex].initializerName}() {this[`);
+          needsCloseBrace = true;
+        } else {
+          this.tokens.copyTokenWithPrefix(`${fields[fieldIndex].initializerName}() {this.`);
+        }
+        while (this.tokens.currentIndex() < fields[fieldIndex].end) {
+          if (needsCloseBrace && this.tokens.currentIndex() === fields[fieldIndex].equalsIndex) {
+            this.tokens.appendCode("]");
+          }
+          this.processToken();
+        }
+        this.tokens.appendCode("}");
+        fieldIndex++;
+      } else if (
+        rangeToRemoveIndex < rangesToRemove.length &&
+        this.tokens.currentIndex() >= rangesToRemove[rangeToRemoveIndex].start
+      ) {
+        if (this.tokens.currentIndex() < rangesToRemove[rangeToRemoveIndex].end) {
+          this.tokens.removeInitialToken();
+        }
+        while (this.tokens.currentIndex() < rangesToRemove[rangeToRemoveIndex].end) {
+          this.tokens.removeToken();
+        }
+        rangeToRemoveIndex++;
+      } else if (this.tokens.currentIndex() === constructorInsertPos) {
+        this.tokens.copyToken();
+        if (needsConstructorInit) {
+          this.tokens.appendCode(
+            `;${this.makeConstructorInitCode(
+              constructorInitializerStatements,
+              instanceInitializerNames,
+              className,
+            )};`,
+          );
+        }
+        this.processToken();
+      } else {
+        this.processToken();
+      }
+    }
+    this.tokens.copyExpectedToken(tt.braceR);
+  }
+
+  makeConstructorInitCode(
+    constructorInitializerStatements,
+    instanceInitializerNames,
+    className,
+  ) {
+    return [
+      ...constructorInitializerStatements,
+      ...instanceInitializerNames.map((name) => `${className}.prototype.${name}.call(this)`),
+    ].join(";");
+  }
+
+  /**
+   * Normally it's ok to simply remove type tokens, but we need to be more careful when dealing with
+   * arrow function return types since they can confuse the parser. In that case, we want to move
+   * the close-paren to the same line as the arrow.
+   *
+   * See https://github.com/alangpierce/sucrase/issues/391 for more details.
+   */
+  processPossibleArrowParamEnd() {
+    if (this.tokens.matches2(tt.parenR, tt.colon) && this.tokens.tokenAtRelativeIndex(1).isType) {
+      let nextNonTypeIndex = this.tokens.currentIndex() + 1;
+      // Look ahead to see if this is an arrow function or something else.
+      while (this.tokens.tokens[nextNonTypeIndex].isType) {
+        nextNonTypeIndex++;
+      }
+      if (this.tokens.matches1AtIndex(nextNonTypeIndex, tt.arrow)) {
+        this.tokens.removeInitialToken();
+        while (this.tokens.currentIndex() < nextNonTypeIndex) {
+          this.tokens.removeToken();
+        }
+        this.tokens.replaceTokenTrimmingLeftWhitespace(") =>");
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * An async arrow function might be of the form:
+   *
+   * async <
+   *   T
+   * >() => {}
+   *
+   * in which case, removing the type parameters will cause a syntax error. Detect this case and
+   * move the open-paren earlier.
+   */
+  processPossibleAsyncArrowWithTypeParams() {
+    if (
+      !this.tokens.matchesContextual(ContextualKeyword._async) &&
+      !this.tokens.matches1(tt._async)
+    ) {
+      return false;
+    }
+    const nextToken = this.tokens.tokenAtRelativeIndex(1);
+    if (nextToken.type !== tt.lessThan || !nextToken.isType) {
+      return false;
+    }
+
+    let nextNonTypeIndex = this.tokens.currentIndex() + 1;
+    // Look ahead to see if this is an arrow function or something else.
+    while (this.tokens.tokens[nextNonTypeIndex].isType) {
+      nextNonTypeIndex++;
+    }
+    if (this.tokens.matches1AtIndex(nextNonTypeIndex, tt.parenL)) {
+      this.tokens.replaceToken("async (");
+      this.tokens.removeInitialToken();
+      while (this.tokens.currentIndex() < nextNonTypeIndex) {
+        this.tokens.removeToken();
+      }
+      this.tokens.removeToken();
+      // We ate a ( token, so we need to process the tokens in between and then the ) token so that
+      // we remain balanced.
+      this.processBalancedCode();
+      this.processToken();
+      return true;
+    }
+    return false;
+  }
+
+  processPossibleTypeRange() {
+    if (this.tokens.currentToken().isType) {
+      this.tokens.removeInitialToken();
+      while (this.tokens.currentToken().isType) {
+        this.tokens.removeToken();
+      }
+      return true;
+    }
+    return false;
+  }
+
+  shiftMappings(
+    mappings,
+    prefixLength,
+  ) {
+    for (let i = 0; i < mappings.length; i++) {
+      const mapping = mappings[i];
+      if (mapping !== undefined) {
+        mappings[i] = mapping + prefixLength;
+      }
+    }
+    return mappings;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/Transformer.js b/node_modules/sucrase/dist/esm/transformers/Transformer.js
new file mode 100644
index 0000000..5e8e9e7
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/Transformer.js
@@ -0,0 +1,16 @@
+export default  class Transformer {
+  // Return true if anything was processed, false otherwise.
+  
+
+  getPrefixCode() {
+    return "";
+  }
+
+  getHoistedCode() {
+    return "";
+  }
+
+  getSuffixCode() {
+    return "";
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/transformers/TypeScriptTransformer.js b/node_modules/sucrase/dist/esm/transformers/TypeScriptTransformer.js
new file mode 100644
index 0000000..67e1274
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/transformers/TypeScriptTransformer.js
@@ -0,0 +1,279 @@
+
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import isIdentifier from "../util/isIdentifier";
+
+import Transformer from "./Transformer";
+
+export default class TypeScriptTransformer extends Transformer {
+  constructor(
+     rootTransformer,
+     tokens,
+     isImportsTransformEnabled,
+  ) {
+    super();this.rootTransformer = rootTransformer;this.tokens = tokens;this.isImportsTransformEnabled = isImportsTransformEnabled;;
+  }
+
+  process() {
+    if (
+      this.rootTransformer.processPossibleArrowParamEnd() ||
+      this.rootTransformer.processPossibleAsyncArrowWithTypeParams() ||
+      this.rootTransformer.processPossibleTypeRange()
+    ) {
+      return true;
+    }
+    if (
+      this.tokens.matches1(tt._public) ||
+      this.tokens.matches1(tt._protected) ||
+      this.tokens.matches1(tt._private) ||
+      this.tokens.matches1(tt._abstract) ||
+      this.tokens.matches1(tt._readonly) ||
+      this.tokens.matches1(tt._override) ||
+      this.tokens.matches1(tt.nonNullAssertion)
+    ) {
+      this.tokens.removeInitialToken();
+      return true;
+    }
+    if (this.tokens.matches1(tt._enum) || this.tokens.matches2(tt._const, tt._enum)) {
+      this.processEnum();
+      return true;
+    }
+    if (
+      this.tokens.matches2(tt._export, tt._enum) ||
+      this.tokens.matches3(tt._export, tt._const, tt._enum)
+    ) {
+      this.processEnum(true);
+      return true;
+    }
+    return false;
+  }
+
+  processEnum(isExport = false) {
+    // We might have "export const enum", so just remove all relevant tokens.
+    this.tokens.removeInitialToken();
+    while (this.tokens.matches1(tt._const) || this.tokens.matches1(tt._enum)) {
+      this.tokens.removeToken();
+    }
+    const enumName = this.tokens.identifierName();
+    this.tokens.removeToken();
+    if (isExport && !this.isImportsTransformEnabled) {
+      this.tokens.appendCode("export ");
+    }
+    this.tokens.appendCode(`var ${enumName}; (function (${enumName})`);
+    this.tokens.copyExpectedToken(tt.braceL);
+    this.processEnumBody(enumName);
+    this.tokens.copyExpectedToken(tt.braceR);
+    if (isExport && this.isImportsTransformEnabled) {
+      this.tokens.appendCode(`)(${enumName} || (exports.${enumName} = ${enumName} = {}));`);
+    } else {
+      this.tokens.appendCode(`)(${enumName} || (${enumName} = {}));`);
+    }
+  }
+
+  /**
+   * Transform an enum into equivalent JS. This has complexity in a few places:
+   * - TS allows string enums, numeric enums, and a mix of the two styles within an enum.
+   * - Enum keys are allowed to be referenced in later enum values.
+   * - Enum keys are allowed to be strings.
+   * - When enum values are omitted, they should follow an auto-increment behavior.
+   */
+  processEnumBody(enumName) {
+    // Code that can be used to reference the previous enum member, or null if this is the first
+    // enum member.
+    let previousValueCode = null;
+    while (true) {
+      if (this.tokens.matches1(tt.braceR)) {
+        break;
+      }
+      const {nameStringCode, variableName} = this.extractEnumKeyInfo(this.tokens.currentToken());
+      this.tokens.removeInitialToken();
+
+      if (
+        this.tokens.matches3(tt.eq, tt.string, tt.comma) ||
+        this.tokens.matches3(tt.eq, tt.string, tt.braceR)
+      ) {
+        this.processStringLiteralEnumMember(enumName, nameStringCode, variableName);
+      } else if (this.tokens.matches1(tt.eq)) {
+        this.processExplicitValueEnumMember(enumName, nameStringCode, variableName);
+      } else {
+        this.processImplicitValueEnumMember(
+          enumName,
+          nameStringCode,
+          variableName,
+          previousValueCode,
+        );
+      }
+      if (this.tokens.matches1(tt.comma)) {
+        this.tokens.removeToken();
+      }
+
+      if (variableName != null) {
+        previousValueCode = variableName;
+      } else {
+        previousValueCode = `${enumName}[${nameStringCode}]`;
+      }
+    }
+  }
+
+  /**
+   * Detect name information about this enum key, which will be used to determine which code to emit
+   * and whether we should declare a variable as part of this declaration.
+   *
+   * Some cases to keep in mind:
+   * - Enum keys can be implicitly referenced later, e.g. `X = 1, Y = X`. In Sucrase, we implement
+   *   this by declaring a variable `X` so that later expressions can use it.
+   * - In addition to the usual identifier key syntax, enum keys are allowed to be string literals,
+   *   e.g. `"hello world" = 3,`. Template literal syntax is NOT allowed.
+   * - Even if the enum key is defined as a string literal, it may still be referenced by identifier
+   *   later, e.g. `"X" = 1, Y = X`. That means that we need to detect whether or not a string
+   *   literal is identifier-like and emit a variable if so, even if the declaration did not use an
+   *   identifier.
+   * - Reserved keywords like `break` are valid enum keys, but are not valid to be referenced later
+   *   and would be a syntax error if we emitted a variable, so we need to skip the variable
+   *   declaration in those cases.
+   *
+   * The variableName return value captures these nuances: if non-null, we can and must emit a
+   * variable declaration, and if null, we can't and shouldn't.
+   */
+  extractEnumKeyInfo(nameToken) {
+    if (nameToken.type === tt.name) {
+      const name = this.tokens.identifierNameForToken(nameToken);
+      return {
+        nameStringCode: `"${name}"`,
+        variableName: isIdentifier(name) ? name : null,
+      };
+    } else if (nameToken.type === tt.string) {
+      const name = this.tokens.stringValueForToken(nameToken);
+      return {
+        nameStringCode: this.tokens.code.slice(nameToken.start, nameToken.end),
+        variableName: isIdentifier(name) ? name : null,
+      };
+    } else {
+      throw new Error("Expected name or string at beginning of enum element.");
+    }
+  }
+
+  /**
+   * Handle an enum member where the RHS is just a string literal (not omitted, not a number, and
+   * not a complex expression). This is the typical form for TS string enums, and in this case, we
+   * do *not* create a reverse mapping.
+   *
+   * This is called after deleting the key token, when the token processor is at the equals sign.
+   *
+   * Example 1:
+   * someKey = "some value"
+   * ->
+   * const someKey = "some value"; MyEnum["someKey"] = someKey;
+   *
+   * Example 2:
+   * "some key" = "some value"
+   * ->
+   * MyEnum["some key"] = "some value";
+   */
+  processStringLiteralEnumMember(
+    enumName,
+    nameStringCode,
+    variableName,
+  ) {
+    if (variableName != null) {
+      this.tokens.appendCode(`const ${variableName}`);
+      // =
+      this.tokens.copyToken();
+      // value string
+      this.tokens.copyToken();
+      this.tokens.appendCode(`; ${enumName}[${nameStringCode}] = ${variableName};`);
+    } else {
+      this.tokens.appendCode(`${enumName}[${nameStringCode}]`);
+      // =
+      this.tokens.copyToken();
+      // value string
+      this.tokens.copyToken();
+      this.tokens.appendCode(";");
+    }
+  }
+
+  /**
+   * Handle an enum member initialized with an expression on the right-hand side (other than a
+   * string literal). In these cases, we should transform the expression and emit code that sets up
+   * a reverse mapping.
+   *
+   * The TypeScript implementation of this operation distinguishes between expressions that can be
+   * "constant folded" at compile time (i.e. consist of number literals and simple math operations
+   * on those numbers) and ones that are dynamic. For constant expressions, it emits the resolved
+   * numeric value, and auto-incrementing is only allowed in that case. Evaluating expressions at
+   * compile time would add significant complexity to Sucrase, so Sucrase instead leaves the
+   * expression as-is, and will later emit something like `MyEnum["previousKey"] + 1` to implement
+   * auto-incrementing.
+   *
+   * This is called after deleting the key token, when the token processor is at the equals sign.
+   *
+   * Example 1:
+   * someKey = 1 + 1
+   * ->
+   * const someKey = 1 + 1; MyEnum[MyEnum["someKey"] = someKey] = "someKey";
+   *
+   * Example 2:
+   * "some key" = 1 + 1
+   * ->
+   * MyEnum[MyEnum["some key"] = 1 + 1] = "some key";
+   */
+  processExplicitValueEnumMember(
+    enumName,
+    nameStringCode,
+    variableName,
+  ) {
+    const rhsEndIndex = this.tokens.currentToken().rhsEndIndex;
+    if (rhsEndIndex == null) {
+      throw new Error("Expected rhsEndIndex on enum assign.");
+    }
+
+    if (variableName != null) {
+      this.tokens.appendCode(`const ${variableName}`);
+      this.tokens.copyToken();
+      while (this.tokens.currentIndex() < rhsEndIndex) {
+        this.rootTransformer.processToken();
+      }
+      this.tokens.appendCode(
+        `; ${enumName}[${enumName}[${nameStringCode}] = ${variableName}] = ${nameStringCode};`,
+      );
+    } else {
+      this.tokens.appendCode(`${enumName}[${enumName}[${nameStringCode}]`);
+      this.tokens.copyToken();
+      while (this.tokens.currentIndex() < rhsEndIndex) {
+        this.rootTransformer.processToken();
+      }
+      this.tokens.appendCode(`] = ${nameStringCode};`);
+    }
+  }
+
+  /**
+   * Handle an enum member with no right-hand side expression. In this case, the value is the
+   * previous value plus 1, or 0 if there was no previous value. We should also always emit a
+   * reverse mapping.
+   *
+   * Example 1:
+   * someKey2
+   * ->
+   * const someKey2 = someKey1 + 1; MyEnum[MyEnum["someKey2"] = someKey2] = "someKey2";
+   *
+   * Example 2:
+   * "some key 2"
+   * ->
+   * MyEnum[MyEnum["some key 2"] = someKey1 + 1] = "some key 2";
+   */
+  processImplicitValueEnumMember(
+    enumName,
+    nameStringCode,
+    variableName,
+    previousValueCode,
+  ) {
+    let valueCode = previousValueCode != null ? `${previousValueCode} + 1` : "0";
+    if (variableName != null) {
+      this.tokens.appendCode(`const ${variableName} = ${valueCode}; `);
+      valueCode = variableName;
+    }
+    this.tokens.appendCode(
+      `${enumName}[${enumName}[${nameStringCode}] = ${valueCode}] = ${nameStringCode};`,
+    );
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/elideImportEquals.js b/node_modules/sucrase/dist/esm/util/elideImportEquals.js
new file mode 100644
index 0000000..6b18a7a
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/elideImportEquals.js
@@ -0,0 +1,29 @@
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+export default function elideImportEquals(tokens) {
+  // import
+  tokens.removeInitialToken();
+  // name
+  tokens.removeToken();
+  // =
+  tokens.removeToken();
+  // name or require
+  tokens.removeToken();
+  // Handle either `import A = require('A')` or `import A = B.C.D`.
+  if (tokens.matches1(tt.parenL)) {
+    // (
+    tokens.removeToken();
+    // path string
+    tokens.removeToken();
+    // )
+    tokens.removeToken();
+  } else {
+    while (tokens.matches1(tt.dot)) {
+      // .
+      tokens.removeToken();
+      // name
+      tokens.removeToken();
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/formatTokens.js b/node_modules/sucrase/dist/esm/util/formatTokens.js
new file mode 100644
index 0000000..eea07d2
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/formatTokens.js
@@ -0,0 +1,74 @@
+import LinesAndColumns from "lines-and-columns";
+
+
+import {formatTokenType} from "../parser/tokenizer/types";
+
+export default function formatTokens(code, tokens) {
+  if (tokens.length === 0) {
+    return "";
+  }
+
+  const tokenKeys = Object.keys(tokens[0]).filter(
+    (k) => k !== "type" && k !== "value" && k !== "start" && k !== "end" && k !== "loc",
+  );
+  const typeKeys = Object.keys(tokens[0].type).filter((k) => k !== "label" && k !== "keyword");
+
+  const headings = ["Location", "Label", "Raw", ...tokenKeys, ...typeKeys];
+
+  const lines = new LinesAndColumns(code);
+  const rows = [headings, ...tokens.map(getTokenComponents)];
+  const padding = headings.map(() => 0);
+  for (const components of rows) {
+    for (let i = 0; i < components.length; i++) {
+      padding[i] = Math.max(padding[i], components[i].length);
+    }
+  }
+  return rows
+    .map((components) => components.map((component, i) => component.padEnd(padding[i])).join(" "))
+    .join("\n");
+
+  function getTokenComponents(token) {
+    const raw = code.slice(token.start, token.end);
+    return [
+      formatRange(token.start, token.end),
+      formatTokenType(token.type),
+      truncate(String(raw), 14),
+      // @ts-ignore: Intentional dynamic access by key.
+      ...tokenKeys.map((key) => formatValue(token[key], key)),
+      // @ts-ignore: Intentional dynamic access by key.
+      ...typeKeys.map((key) => formatValue(token.type[key], key)),
+    ];
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  function formatValue(value, key) {
+    if (value === true) {
+      return key;
+    } else if (value === false || value === null) {
+      return "";
+    } else {
+      return String(value);
+    }
+  }
+
+  function formatRange(start, end) {
+    return `${formatPos(start)}-${formatPos(end)}`;
+  }
+
+  function formatPos(pos) {
+    const location = lines.locationForIndex(pos);
+    if (!location) {
+      return "Unknown";
+    } else {
+      return `${location.line + 1}:${location.column + 1}`;
+    }
+  }
+}
+
+function truncate(s, length) {
+  if (s.length > length) {
+    return `${s.slice(0, length - 3)}...`;
+  } else {
+    return s;
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/getClassInfo.js b/node_modules/sucrase/dist/esm/util/getClassInfo.js
new file mode 100644
index 0000000..0100ad6
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getClassInfo.js
@@ -0,0 +1,352 @@
+
+
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/**
+ * Get information about the class fields for this class, given a token processor pointing to the
+ * open-brace at the start of the class.
+ */
+export default function getClassInfo(
+  rootTransformer,
+  tokens,
+  nameManager,
+  disableESTransforms,
+) {
+  const snapshot = tokens.snapshot();
+
+  const headerInfo = processClassHeader(tokens);
+
+  let constructorInitializerStatements = [];
+  const instanceInitializerNames = [];
+  const staticInitializerNames = [];
+  let constructorInsertPos = null;
+  const fields = [];
+  const rangesToRemove = [];
+
+  const classContextId = tokens.currentToken().contextId;
+  if (classContextId == null) {
+    throw new Error("Expected non-null class context ID on class open-brace.");
+  }
+
+  tokens.nextToken();
+  while (!tokens.matchesContextIdAndLabel(tt.braceR, classContextId)) {
+    if (tokens.matchesContextual(ContextualKeyword._constructor) && !tokens.currentToken().isType) {
+      ({constructorInitializerStatements, constructorInsertPos} = processConstructor(tokens));
+    } else if (tokens.matches1(tt.semi)) {
+      if (!disableESTransforms) {
+        rangesToRemove.push({start: tokens.currentIndex(), end: tokens.currentIndex() + 1});
+      }
+      tokens.nextToken();
+    } else if (tokens.currentToken().isType) {
+      tokens.nextToken();
+    } else {
+      // Either a method or a field. Skip to the identifier part.
+      const statementStartIndex = tokens.currentIndex();
+      let isStatic = false;
+      let isESPrivate = false;
+      let isDeclareOrAbstract = false;
+      while (isAccessModifier(tokens.currentToken())) {
+        if (tokens.matches1(tt._static)) {
+          isStatic = true;
+        }
+        if (tokens.matches1(tt.hash)) {
+          isESPrivate = true;
+        }
+        if (tokens.matches1(tt._declare) || tokens.matches1(tt._abstract)) {
+          isDeclareOrAbstract = true;
+        }
+        tokens.nextToken();
+      }
+      if (isStatic && tokens.matches1(tt.braceL)) {
+        // This is a static block, so don't process it in any special way.
+        skipToNextClassElement(tokens, classContextId);
+        continue;
+      }
+      if (isESPrivate) {
+        // Sucrase doesn't attempt to transpile private fields; just leave them as-is.
+        skipToNextClassElement(tokens, classContextId);
+        continue;
+      }
+      if (
+        tokens.matchesContextual(ContextualKeyword._constructor) &&
+        !tokens.currentToken().isType
+      ) {
+        ({constructorInitializerStatements, constructorInsertPos} = processConstructor(tokens));
+        continue;
+      }
+
+      const nameStartIndex = tokens.currentIndex();
+      skipFieldName(tokens);
+      if (tokens.matches1(tt.lessThan) || tokens.matches1(tt.parenL)) {
+        // This is a method, so nothing to process.
+        skipToNextClassElement(tokens, classContextId);
+        continue;
+      }
+      // There might be a type annotation that we need to skip.
+      while (tokens.currentToken().isType) {
+        tokens.nextToken();
+      }
+      if (tokens.matches1(tt.eq)) {
+        const equalsIndex = tokens.currentIndex();
+        // This is an initializer, so we need to wrap in an initializer method.
+        const valueEnd = tokens.currentToken().rhsEndIndex;
+        if (valueEnd == null) {
+          throw new Error("Expected rhsEndIndex on class field assignment.");
+        }
+        tokens.nextToken();
+        while (tokens.currentIndex() < valueEnd) {
+          rootTransformer.processToken();
+        }
+        let initializerName;
+        if (isStatic) {
+          initializerName = nameManager.claimFreeName("__initStatic");
+          staticInitializerNames.push(initializerName);
+        } else {
+          initializerName = nameManager.claimFreeName("__init");
+          instanceInitializerNames.push(initializerName);
+        }
+        // Fields start at the name, so `static x = 1;` has a field range of `x = 1;`.
+        fields.push({
+          initializerName,
+          equalsIndex,
+          start: nameStartIndex,
+          end: tokens.currentIndex(),
+        });
+      } else if (!disableESTransforms || isDeclareOrAbstract) {
+        // This is a regular field declaration, like `x;`. With the class transform enabled, we just
+        // remove the line so that no output is produced. With the class transform disabled, we
+        // usually want to preserve the declaration (but still strip types), but if the `declare`
+        // or `abstract` keyword is specified, we should remove the line to avoid initializing the
+        // value to undefined.
+        rangesToRemove.push({start: statementStartIndex, end: tokens.currentIndex()});
+      }
+    }
+  }
+
+  tokens.restoreToSnapshot(snapshot);
+  if (disableESTransforms) {
+    // With ES transforms disabled, we don't want to transform regular class
+    // field declarations, and we don't need to do any additional tricks to
+    // reference the constructor for static init, but we still need to transform
+    // TypeScript field initializers defined as constructor parameters and we
+    // still need to remove `declare` fields. For now, we run the same code
+    // path but omit any field information, as if the class had no field
+    // declarations. In the future, when we fully drop the class fields
+    // transform, we can simplify this code significantly.
+    return {
+      headerInfo,
+      constructorInitializerStatements,
+      instanceInitializerNames: [],
+      staticInitializerNames: [],
+      constructorInsertPos,
+      fields: [],
+      rangesToRemove,
+    };
+  } else {
+    return {
+      headerInfo,
+      constructorInitializerStatements,
+      instanceInitializerNames,
+      staticInitializerNames,
+      constructorInsertPos,
+      fields,
+      rangesToRemove,
+    };
+  }
+}
+
+/**
+ * Move the token processor to the next method/field in the class.
+ *
+ * To do that, we seek forward to the next start of a class name (either an open
+ * bracket or an identifier, or the closing curly brace), then seek backward to
+ * include any access modifiers.
+ */
+function skipToNextClassElement(tokens, classContextId) {
+  tokens.nextToken();
+  while (tokens.currentToken().contextId !== classContextId) {
+    tokens.nextToken();
+  }
+  while (isAccessModifier(tokens.tokenAtRelativeIndex(-1))) {
+    tokens.previousToken();
+  }
+}
+
+function processClassHeader(tokens) {
+  const classToken = tokens.currentToken();
+  const contextId = classToken.contextId;
+  if (contextId == null) {
+    throw new Error("Expected context ID on class token.");
+  }
+  const isExpression = classToken.isExpression;
+  if (isExpression == null) {
+    throw new Error("Expected isExpression on class token.");
+  }
+  let className = null;
+  let hasSuperclass = false;
+  tokens.nextToken();
+  if (tokens.matches1(tt.name)) {
+    className = tokens.identifierName();
+  }
+  while (!tokens.matchesContextIdAndLabel(tt.braceL, contextId)) {
+    // If this has a superclass, there will always be an `extends` token. If it doesn't have a
+    // superclass, only type parameters and `implements` clauses can show up here, all of which
+    // consist only of type tokens. A declaration like `class A<B extends C> {` should *not* count
+    // as having a superclass.
+    if (tokens.matches1(tt._extends) && !tokens.currentToken().isType) {
+      hasSuperclass = true;
+    }
+    tokens.nextToken();
+  }
+  return {isExpression, className, hasSuperclass};
+}
+
+/**
+ * Extract useful information out of a constructor, starting at the "constructor" name.
+ */
+function processConstructor(tokens)
+
+
+ {
+  const constructorInitializerStatements = [];
+
+  tokens.nextToken();
+  const constructorContextId = tokens.currentToken().contextId;
+  if (constructorContextId == null) {
+    throw new Error("Expected context ID on open-paren starting constructor params.");
+  }
+  // Advance through parameters looking for access modifiers.
+  while (!tokens.matchesContextIdAndLabel(tt.parenR, constructorContextId)) {
+    if (tokens.currentToken().contextId === constructorContextId) {
+      // Current token is an open paren or comma just before a param, so check
+      // that param for access modifiers.
+      tokens.nextToken();
+      if (isAccessModifier(tokens.currentToken())) {
+        tokens.nextToken();
+        while (isAccessModifier(tokens.currentToken())) {
+          tokens.nextToken();
+        }
+        const token = tokens.currentToken();
+        if (token.type !== tt.name) {
+          throw new Error("Expected identifier after access modifiers in constructor arg.");
+        }
+        const name = tokens.identifierNameForToken(token);
+        constructorInitializerStatements.push(`this.${name} = ${name}`);
+      }
+    } else {
+      tokens.nextToken();
+    }
+  }
+  // )
+  tokens.nextToken();
+  // Constructor type annotations are invalid, but skip them anyway since
+  // they're easy to skip.
+  while (tokens.currentToken().isType) {
+    tokens.nextToken();
+  }
+  let constructorInsertPos = tokens.currentIndex();
+
+  // Advance through body looking for a super call.
+  let foundSuperCall = false;
+  while (!tokens.matchesContextIdAndLabel(tt.braceR, constructorContextId)) {
+    if (!foundSuperCall && tokens.matches2(tt._super, tt.parenL)) {
+      tokens.nextToken();
+      const superCallContextId = tokens.currentToken().contextId;
+      if (superCallContextId == null) {
+        throw new Error("Expected a context ID on the super call");
+      }
+      while (!tokens.matchesContextIdAndLabel(tt.parenR, superCallContextId)) {
+        tokens.nextToken();
+      }
+      constructorInsertPos = tokens.currentIndex();
+      foundSuperCall = true;
+    }
+    tokens.nextToken();
+  }
+  // }
+  tokens.nextToken();
+
+  return {constructorInitializerStatements, constructorInsertPos};
+}
+
+/**
+ * Determine if this is any token that can go before the name in a method/field.
+ */
+function isAccessModifier(token) {
+  return [
+    tt._async,
+    tt._get,
+    tt._set,
+    tt.plus,
+    tt.minus,
+    tt._readonly,
+    tt._static,
+    tt._public,
+    tt._private,
+    tt._protected,
+    tt._override,
+    tt._abstract,
+    tt.star,
+    tt._declare,
+    tt.hash,
+  ].includes(token.type);
+}
+
+/**
+ * The next token or set of tokens is either an identifier or an expression in square brackets, for
+ * a method or field name.
+ */
+function skipFieldName(tokens) {
+  if (tokens.matches1(tt.bracketL)) {
+    const startToken = tokens.currentToken();
+    const classContextId = startToken.contextId;
+    if (classContextId == null) {
+      throw new Error("Expected class context ID on computed name open bracket.");
+    }
+    while (!tokens.matchesContextIdAndLabel(tt.bracketR, classContextId)) {
+      tokens.nextToken();
+    }
+    tokens.nextToken();
+  } else {
+    tokens.nextToken();
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/getDeclarationInfo.js b/node_modules/sucrase/dist/esm/util/getDeclarationInfo.js
new file mode 100644
index 0000000..ade9a81
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getDeclarationInfo.js
@@ -0,0 +1,40 @@
+import {isTopLevelDeclaration} from "../parser/tokenizer";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+
+
+
+
+
+export const EMPTY_DECLARATION_INFO = {
+  typeDeclarations: new Set(),
+  valueDeclarations: new Set(),
+};
+
+/**
+ * Get all top-level identifiers that should be preserved when exported in TypeScript.
+ *
+ * Examples:
+ * - If an identifier is declared as `const x`, then `export {x}` should be preserved.
+ * - If it's declared as `type x`, then `export {x}` should be removed.
+ * - If it's declared as both `const x` and `type x`, then the export should be preserved.
+ * - Classes and enums should be preserved (even though they also introduce types).
+ * - Imported identifiers should be preserved since we don't have enough information to
+ *   rule them out. --isolatedModules disallows re-exports, which catches errors here.
+ */
+export default function getDeclarationInfo(tokens) {
+  const typeDeclarations = new Set();
+  const valueDeclarations = new Set();
+  for (let i = 0; i < tokens.tokens.length; i++) {
+    const token = tokens.tokens[i];
+    if (token.type === tt.name && isTopLevelDeclaration(token)) {
+      if (token.isType) {
+        typeDeclarations.add(tokens.identifierNameForToken(token));
+      } else {
+        valueDeclarations.add(tokens.identifierNameForToken(token));
+      }
+    }
+  }
+  return {typeDeclarations, valueDeclarations};
+}
diff --git a/node_modules/sucrase/dist/esm/util/getIdentifierNames.js b/node_modules/sucrase/dist/esm/util/getIdentifierNames.js
new file mode 100644
index 0000000..5b85901
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getIdentifierNames.js
@@ -0,0 +1,15 @@
+
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+/**
+ * Get all identifier names in the code, in order, including duplicates.
+ */
+export default function getIdentifierNames(code, tokens) {
+  const names = [];
+  for (const token of tokens) {
+    if (token.type === tt.name) {
+      names.push(code.slice(token.start, token.end));
+    }
+  }
+  return names;
+}
diff --git a/node_modules/sucrase/dist/esm/util/getImportExportSpecifierInfo.js b/node_modules/sucrase/dist/esm/util/getImportExportSpecifierInfo.js
new file mode 100644
index 0000000..3dc6d2c
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getImportExportSpecifierInfo.js
@@ -0,0 +1,92 @@
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+ 
+
+
+
+
+
+
+
+
+
+
+
+
+
+/**
+ * Determine information about this named import or named export specifier.
+ *
+ * This syntax is the `a` from statements like these:
+ * import {A} from "./foo";
+ * export {A};
+ * export {A} from "./foo";
+ *
+ * As it turns out, we can exactly characterize the syntax meaning by simply
+ * counting the number of tokens, which can be from 1 to 4:
+ * {A}
+ * {type A}
+ * {A as B}
+ * {type A as B}
+ *
+ * In the type case, we never actually need the names in practice, so don't get
+ * them.
+ *
+ * TODO: There's some redundancy with the type detection here and the isType
+ * flag that's already present on tokens in TS mode. This function could
+ * potentially be simplified and/or pushed to the call sites to avoid the object
+ * allocation.
+ */
+export default function getImportExportSpecifierInfo(
+  tokens,
+  index = tokens.currentIndex(),
+) {
+  let endIndex = index + 1;
+  if (isSpecifierEnd(tokens, endIndex)) {
+    // import {A}
+    const name = tokens.identifierNameAtIndex(index);
+    return {
+      isType: false,
+      leftName: name,
+      rightName: name,
+      endIndex,
+    };
+  }
+  endIndex++;
+  if (isSpecifierEnd(tokens, endIndex)) {
+    // import {type A}
+    return {
+      isType: true,
+      leftName: null,
+      rightName: null,
+      endIndex,
+    };
+  }
+  endIndex++;
+  if (isSpecifierEnd(tokens, endIndex)) {
+    // import {A as B}
+    return {
+      isType: false,
+      leftName: tokens.identifierNameAtIndex(index),
+      rightName: tokens.identifierNameAtIndex(index + 2),
+      endIndex,
+    };
+  }
+  endIndex++;
+  if (isSpecifierEnd(tokens, endIndex)) {
+    // import {type A as B}
+    return {
+      isType: true,
+      leftName: null,
+      rightName: null,
+      endIndex,
+    };
+  }
+  throw new Error(`Unexpected import/export specifier at ${index}`);
+}
+
+function isSpecifierEnd(tokens, index) {
+  const token = tokens.tokens[index];
+  return token.type === tt.braceR || token.type === tt.comma;
+}
diff --git a/node_modules/sucrase/dist/esm/util/getJSXPragmaInfo.js b/node_modules/sucrase/dist/esm/util/getJSXPragmaInfo.js
new file mode 100644
index 0000000..9972342
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getJSXPragmaInfo.js
@@ -0,0 +1,22 @@
+
+
+
+
+
+
+
+
+
+export default function getJSXPragmaInfo(options) {
+  const [base, suffix] = splitPragma(options.jsxPragma || "React.createElement");
+  const [fragmentBase, fragmentSuffix] = splitPragma(options.jsxFragmentPragma || "React.Fragment");
+  return {base, suffix, fragmentBase, fragmentSuffix};
+}
+
+function splitPragma(pragma) {
+  let dotIndex = pragma.indexOf(".");
+  if (dotIndex === -1) {
+    dotIndex = pragma.length;
+  }
+  return [pragma.slice(0, dotIndex), pragma.slice(dotIndex)];
+}
diff --git a/node_modules/sucrase/dist/esm/util/getNonTypeIdentifiers.js b/node_modules/sucrase/dist/esm/util/getNonTypeIdentifiers.js
new file mode 100644
index 0000000..24c73dd
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getNonTypeIdentifiers.js
@@ -0,0 +1,43 @@
+
+import {IdentifierRole} from "../parser/tokenizer";
+import {TokenType, TokenType as tt} from "../parser/tokenizer/types";
+
+import {startsWithLowerCase} from "../transformers/JSXTransformer";
+import getJSXPragmaInfo from "./getJSXPragmaInfo";
+
+export function getNonTypeIdentifiers(tokens, options) {
+  const jsxPragmaInfo = getJSXPragmaInfo(options);
+  const nonTypeIdentifiers = new Set();
+  for (let i = 0; i < tokens.tokens.length; i++) {
+    const token = tokens.tokens[i];
+    if (
+      token.type === tt.name &&
+      !token.isType &&
+      (token.identifierRole === IdentifierRole.Access ||
+        token.identifierRole === IdentifierRole.ObjectShorthand ||
+        token.identifierRole === IdentifierRole.ExportAccess) &&
+      !token.shadowsGlobal
+    ) {
+      nonTypeIdentifiers.add(tokens.identifierNameForToken(token));
+    }
+    if (token.type === tt.jsxTagStart) {
+      nonTypeIdentifiers.add(jsxPragmaInfo.base);
+    }
+    if (
+      token.type === tt.jsxTagStart &&
+      i + 1 < tokens.tokens.length &&
+      tokens.tokens[i + 1].type === tt.jsxTagEnd
+    ) {
+      nonTypeIdentifiers.add(jsxPragmaInfo.base);
+      nonTypeIdentifiers.add(jsxPragmaInfo.fragmentBase);
+    }
+    if (token.type === tt.jsxName && token.identifierRole === IdentifierRole.Access) {
+      const identifierName = tokens.identifierNameForToken(token);
+      // Lower-case single-component tag names like "div" don't count.
+      if (!startsWithLowerCase(identifierName) || tokens.tokens[i + 1].type === TokenType.dot) {
+        nonTypeIdentifiers.add(tokens.identifierNameForToken(token));
+      }
+    }
+  }
+  return nonTypeIdentifiers;
+}
diff --git a/node_modules/sucrase/dist/esm/util/getTSImportedNames.js b/node_modules/sucrase/dist/esm/util/getTSImportedNames.js
new file mode 100644
index 0000000..523181a
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/getTSImportedNames.js
@@ -0,0 +1,84 @@
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+import getImportExportSpecifierInfo from "./getImportExportSpecifierInfo";
+
+/**
+ * Special case code to scan for imported names in ESM TypeScript. We need to do this so we can
+ * properly get globals so we can compute shadowed globals.
+ *
+ * This is similar to logic in CJSImportProcessor, but trimmed down to avoid logic with CJS
+ * replacement and flow type imports.
+ */
+export default function getTSImportedNames(tokens) {
+  const importedNames = new Set();
+  for (let i = 0; i < tokens.tokens.length; i++) {
+    if (
+      tokens.matches1AtIndex(i, tt._import) &&
+      !tokens.matches3AtIndex(i, tt._import, tt.name, tt.eq)
+    ) {
+      collectNamesForImport(tokens, i, importedNames);
+    }
+  }
+  return importedNames;
+}
+
+function collectNamesForImport(
+  tokens,
+  index,
+  importedNames,
+) {
+  index++;
+
+  if (tokens.matches1AtIndex(index, tt.parenL)) {
+    // Dynamic import, so nothing to do
+    return;
+  }
+
+  if (tokens.matches1AtIndex(index, tt.name)) {
+    importedNames.add(tokens.identifierNameAtIndex(index));
+    index++;
+    if (tokens.matches1AtIndex(index, tt.comma)) {
+      index++;
+    }
+  }
+
+  if (tokens.matches1AtIndex(index, tt.star)) {
+    // * as
+    index += 2;
+    importedNames.add(tokens.identifierNameAtIndex(index));
+    index++;
+  }
+
+  if (tokens.matches1AtIndex(index, tt.braceL)) {
+    index++;
+    collectNamesForNamedImport(tokens, index, importedNames);
+  }
+}
+
+function collectNamesForNamedImport(
+  tokens,
+  index,
+  importedNames,
+) {
+  while (true) {
+    if (tokens.matches1AtIndex(index, tt.braceR)) {
+      return;
+    }
+
+    const specifierInfo = getImportExportSpecifierInfo(tokens, index);
+    index = specifierInfo.endIndex;
+    if (!specifierInfo.isType) {
+      importedNames.add(specifierInfo.rightName);
+    }
+
+    if (tokens.matches2AtIndex(index, tt.comma, tt.braceR)) {
+      return;
+    } else if (tokens.matches1AtIndex(index, tt.braceR)) {
+      return;
+    } else if (tokens.matches1AtIndex(index, tt.comma)) {
+      index++;
+    } else {
+      throw new Error(`Unexpected token: ${JSON.stringify(tokens.tokens[index])}`);
+    }
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/isAsyncOperation.js b/node_modules/sucrase/dist/esm/util/isAsyncOperation.js
new file mode 100644
index 0000000..af40e9a
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/isAsyncOperation.js
@@ -0,0 +1,38 @@
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+
+
+/**
+ * Determine whether this optional chain or nullish coalescing operation has any await statements in
+ * it. If so, we'll need to transpile to an async operation.
+ *
+ * We compute this by walking the length of the operation and returning true if we see an await
+ * keyword used as a real await (rather than an object key or property access). Nested optional
+ * chain/nullish operations need to be tracked but don't silence await, but a nested async function
+ * (or any other nested scope) will make the await not count.
+ */
+export default function isAsyncOperation(tokens) {
+  let index = tokens.currentIndex();
+  let depth = 0;
+  const startToken = tokens.currentToken();
+  do {
+    const token = tokens.tokens[index];
+    if (token.isOptionalChainStart) {
+      depth++;
+    }
+    if (token.isOptionalChainEnd) {
+      depth--;
+    }
+    depth += token.numNullishCoalesceStarts;
+    depth -= token.numNullishCoalesceEnds;
+
+    if (
+      token.contextualKeyword === ContextualKeyword._await &&
+      token.identifierRole == null &&
+      token.scopeDepth === startToken.scopeDepth
+    ) {
+      return true;
+    }
+    index += 1;
+  } while (depth > 0 && index < tokens.tokens.length);
+  return false;
+}
diff --git a/node_modules/sucrase/dist/esm/util/isExportFrom.js b/node_modules/sucrase/dist/esm/util/isExportFrom.js
new file mode 100644
index 0000000..fd33665
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/isExportFrom.js
@@ -0,0 +1,18 @@
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+/**
+ * Starting at `export {`, look ahead and return `true` if this is an
+ * `export {...} from` statement and `false` if this is a plain multi-export.
+ */
+export default function isExportFrom(tokens) {
+  let closeBraceIndex = tokens.currentIndex();
+  while (!tokens.matches1AtIndex(closeBraceIndex, tt.braceR)) {
+    closeBraceIndex++;
+  }
+  return (
+    tokens.matchesContextualAtIndex(closeBraceIndex + 1, ContextualKeyword._from) &&
+    tokens.matches1AtIndex(closeBraceIndex + 2, tt.string)
+  );
+}
diff --git a/node_modules/sucrase/dist/esm/util/isIdentifier.js b/node_modules/sucrase/dist/esm/util/isIdentifier.js
new file mode 100644
index 0000000..4a62ff6
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/isIdentifier.js
@@ -0,0 +1,81 @@
+import {IS_IDENTIFIER_CHAR, IS_IDENTIFIER_START} from "../parser/util/identifier";
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar
+// Hard-code a list of reserved words rather than trying to use keywords or contextual keywords
+// from the parser, since currently there are various exceptions, like `package` being reserved
+// but unused and various contextual keywords being reserved. Note that we assume that all code
+// compiled by Sucrase is in a module, so strict mode words and await are all considered reserved
+// here.
+const RESERVED_WORDS = new Set([
+  // Reserved keywords as of ECMAScript 2015
+  "break",
+  "case",
+  "catch",
+  "class",
+  "const",
+  "continue",
+  "debugger",
+  "default",
+  "delete",
+  "do",
+  "else",
+  "export",
+  "extends",
+  "finally",
+  "for",
+  "function",
+  "if",
+  "import",
+  "in",
+  "instanceof",
+  "new",
+  "return",
+  "super",
+  "switch",
+  "this",
+  "throw",
+  "try",
+  "typeof",
+  "var",
+  "void",
+  "while",
+  "with",
+  "yield",
+  // Future reserved keywords
+  "enum",
+  "implements",
+  "interface",
+  "let",
+  "package",
+  "private",
+  "protected",
+  "public",
+  "static",
+  "await",
+  // Literals that cannot be used as identifiers
+  "false",
+  "null",
+  "true",
+]);
+
+/**
+ * Determine if the given name is a legal variable name.
+ *
+ * This is needed when transforming TypeScript enums; if an enum key is a valid
+ * variable name, it might be referenced later in the enum, so we need to
+ * declare a variable.
+ */
+export default function isIdentifier(name) {
+  if (name.length === 0) {
+    return false;
+  }
+  if (!IS_IDENTIFIER_START[name.charCodeAt(0)]) {
+    return false;
+  }
+  for (let i = 1; i < name.length; i++) {
+    if (!IS_IDENTIFIER_CHAR[name.charCodeAt(i)]) {
+      return false;
+    }
+  }
+  return !RESERVED_WORDS.has(name);
+}
diff --git a/node_modules/sucrase/dist/esm/util/removeMaybeImportAttributes.js b/node_modules/sucrase/dist/esm/util/removeMaybeImportAttributes.js
new file mode 100644
index 0000000..abced0e
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/removeMaybeImportAttributes.js
@@ -0,0 +1,22 @@
+import {ContextualKeyword} from "../parser/tokenizer/keywords";
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+/**
+ * Starting at a potential `with` or (legacy) `assert` token, remove the import
+ * attributes if they exist.
+ */
+export function removeMaybeImportAttributes(tokens) {
+  if (
+    tokens.matches2(tt._with, tt.braceL) ||
+    (tokens.matches2(tt.name, tt.braceL) && tokens.matchesContextual(ContextualKeyword._assert))
+  ) {
+    // assert
+    tokens.removeToken();
+    // {
+    tokens.removeToken();
+    tokens.removeBalancedCode();
+    // }
+    tokens.removeToken();
+  }
+}
diff --git a/node_modules/sucrase/dist/esm/util/shouldElideDefaultExport.js b/node_modules/sucrase/dist/esm/util/shouldElideDefaultExport.js
new file mode 100644
index 0000000..d3c4693
--- /dev/null
+++ b/node_modules/sucrase/dist/esm/util/shouldElideDefaultExport.js
@@ -0,0 +1,38 @@
+import {TokenType as tt} from "../parser/tokenizer/types";
+
+
+
+/**
+ * Common method sharing code between CJS and ESM cases, since they're the same here.
+ */
+export default function shouldElideDefaultExport(
+  isTypeScriptTransformEnabled,
+  keepUnusedImports,
+  tokens,
+  declarationInfo,
+) {
+  if (!isTypeScriptTransformEnabled || keepUnusedImports) {
+    return false;
+  }
+  const exportToken = tokens.currentToken();
+  if (exportToken.rhsEndIndex == null) {
+    throw new Error("Expected non-null rhsEndIndex on export token.");
+  }
+  // The export must be of the form `export default a` or `export default a;`.
+  const numTokens = exportToken.rhsEndIndex - tokens.currentIndex();
+  if (
+    numTokens !== 3 &&
+    !(numTokens === 4 && tokens.matches1AtIndex(exportToken.rhsEndIndex - 1, tt.semi))
+  ) {
+    return false;
+  }
+  const identifierToken = tokens.tokenAtRelativeIndex(2);
+  if (identifierToken.type !== tt.name) {
+    return false;
+  }
+  const exportedName = tokens.identifierNameForToken(identifierToken);
+  return (
+    declarationInfo.typeDeclarations.has(exportedName) &&
+    !declarationInfo.valueDeclarations.has(exportedName)
+  );
+}