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f594cc85b7
PR-URL: https://github.com/nodejs/node/pull/44859 Reviewed-By: Jacob Smith <jacob@frende.me> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Jan Krems <jan.krems@gmail.com> Reviewed-By: Guy Bedford <guybedford@gmail.com>
42 lines
853 B
JavaScript
42 lines
853 B
JavaScript
'use strict';
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const {
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RegExpPrototypeExec,
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} = primordials;
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const { getOptionValue } = require('internal/options');
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const experimentalWasmModules = getOptionValue('--experimental-wasm-modules');
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const extensionFormatMap = {
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'__proto__': null,
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'.cjs': 'commonjs',
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'.js': 'module',
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'.json': 'json',
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'.mjs': 'module',
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};
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if (experimentalWasmModules) {
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extensionFormatMap['.wasm'] = 'wasm';
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}
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/**
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* @param {string} mime
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* @returns {string | null}
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*/
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function mimeToFormat(mime) {
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if (
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RegExpPrototypeExec(
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/\s*(text|application)\/javascript\s*(;\s*charset=utf-?8\s*)?/i,
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mime
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) !== null
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) return 'module';
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if (mime === 'application/json') return 'json';
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if (experimentalWasmModules && mime === 'application/wasm') return 'wasm';
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return null;
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}
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module.exports = {
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extensionFormatMap,
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mimeToFormat,
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};
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