From b1e2c8fd5cb5dfa46bc440a12eafaf56cd844b1c Mon Sep 17 00:00:00 2001 From: Philipp Tanlak Date: Mon, 24 Nov 2025 20:54:57 +0100 Subject: Docs --- .../sucrase/dist/esm/util/getDeclarationInfo.js | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 node_modules/sucrase/dist/esm/util/getDeclarationInfo.js (limited to 'node_modules/sucrase/dist/esm/util/getDeclarationInfo.js') 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}; +} -- cgit v1.2.3