mirror of
https://github.com/nodejs/node.git
synced 2025-05-14 23:19:09 +00:00
2551a21553
PR-URL: https://github.com/nodejs/node/pull/30986 Reviewed-By: Guy Bedford <guybedford@gmail.com> Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
78 lines
2.4 KiB
JavaScript
78 lines
2.4 KiB
JavaScript
'use strict';
|
|
|
|
const { NativeModule } = require('internal/bootstrap/loaders');
|
|
const { extname } = require('path');
|
|
const { getOptionValue } = require('internal/options');
|
|
|
|
const experimentalJsonModules = getOptionValue('--experimental-json-modules');
|
|
const experimentalSpeciferResolution =
|
|
getOptionValue('--experimental-specifier-resolution');
|
|
const experimentalWasmModules = getOptionValue('--experimental-wasm-modules');
|
|
const { getPackageType } = internalBinding('module_wrap');
|
|
const { URL, fileURLToPath } = require('internal/url');
|
|
const { ERR_UNKNOWN_FILE_EXTENSION } = require('internal/errors').codes;
|
|
|
|
// const TYPE_NONE = 0;
|
|
// const TYPE_COMMONJS = 1;
|
|
const TYPE_MODULE = 2;
|
|
|
|
const extensionFormatMap = {
|
|
'__proto__': null,
|
|
'.cjs': 'commonjs',
|
|
'.js': 'module',
|
|
'.mjs': 'module'
|
|
};
|
|
|
|
const legacyExtensionFormatMap = {
|
|
'__proto__': null,
|
|
'.cjs': 'commonjs',
|
|
'.js': 'commonjs',
|
|
'.json': 'commonjs',
|
|
'.mjs': 'module',
|
|
'.node': 'commonjs'
|
|
};
|
|
|
|
if (experimentalWasmModules)
|
|
extensionFormatMap['.wasm'] = legacyExtensionFormatMap['.wasm'] = 'wasm';
|
|
|
|
if (experimentalJsonModules)
|
|
extensionFormatMap['.json'] = legacyExtensionFormatMap['.json'] = 'json';
|
|
|
|
function defaultGetFormat(url, context, defaultGetFormat) {
|
|
if (NativeModule.canBeRequiredByUsers(url)) {
|
|
return { format: 'builtin' };
|
|
}
|
|
const parsed = new URL(url);
|
|
if (parsed.protocol === 'data:') {
|
|
const [ , mime ] = /^([^/]+\/[^;,]+)(?:[^,]*?)(;base64)?,/.exec(parsed.pathname) || [ null, null, null ];
|
|
const format = ({
|
|
'__proto__': null,
|
|
'text/javascript': 'module',
|
|
'application/json': experimentalJsonModules ? 'json' : null,
|
|
'application/wasm': experimentalWasmModules ? 'wasm' : null
|
|
})[mime] || null;
|
|
return { format };
|
|
} else if (parsed.protocol === 'file:') {
|
|
const ext = extname(parsed.pathname);
|
|
let format;
|
|
if (ext === '.js' || ext === '') {
|
|
format = getPackageType(parsed.href) === TYPE_MODULE ?
|
|
'module' : 'commonjs';
|
|
} else {
|
|
format = extensionFormatMap[ext];
|
|
}
|
|
if (!format) {
|
|
if (experimentalSpeciferResolution === 'node') {
|
|
process.emitWarning(
|
|
'The Node.js specifier resolution in ESM is experimental.',
|
|
'ExperimentalWarning');
|
|
format = legacyExtensionFormatMap[ext];
|
|
} else {
|
|
throw new ERR_UNKNOWN_FILE_EXTENSION(ext, fileURLToPath(url));
|
|
}
|
|
}
|
|
return { format: format || null };
|
|
}
|
|
}
|
|
exports.defaultGetFormat = defaultGetFormat;
|