Docs

1 files changed, 34 insertions, 0 deletions

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;
+}