forked from LeenkxTeam/Kmake
82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
'use strict';
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const {
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StringPrototypeStartsWith,
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} = primordials;
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const { getOptionValue } = require('internal/options');
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const {
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setLazyPathHelpers,
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} = internalBinding('modules');
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const experimentalImportMetaResolve = getOptionValue('--experimental-import-meta-resolve');
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/**
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* Generate a function to be used as import.meta.resolve for a particular module.
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* @param {string} defaultParentURL The default base to use for resolution
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* @param {typeof import('./loader.js').ModuleLoader} loader Reference to the current module loader
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* @param {bool} allowParentURL Whether to permit parentURL second argument for contextual resolution
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* @returns {(specifier: string) => string} Function to assign to import.meta.resolve
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*/
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function createImportMetaResolve(defaultParentURL, loader, allowParentURL) {
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/**
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* @param {string} specifier
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* @param {URL['href']} [parentURL] When `--experimental-import-meta-resolve` is specified, a
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* second argument can be provided.
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*/
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return function resolve(specifier, parentURL = defaultParentURL) {
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let url;
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if (!allowParentURL) {
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parentURL = defaultParentURL;
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}
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try {
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({ url } = loader.resolveSync(specifier, parentURL));
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return url;
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} catch (error) {
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switch (error?.code) {
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case 'ERR_UNSUPPORTED_DIR_IMPORT':
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case 'ERR_MODULE_NOT_FOUND':
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({ url } = error);
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if (url) {
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return url;
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}
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}
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throw error;
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}
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};
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}
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/**
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* Create the `import.meta` object for a module.
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* @param {object} meta
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* @param {{url: string, isMain?: boolean}} context
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* @param {typeof import('./loader.js').ModuleLoader} loader Reference to the current module loader
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* @returns {{dirname?: string, filename?: string, url: string, resolve?: Function}}
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*/
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function initializeImportMeta(meta, context, loader) {
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const { url, isMain } = context;
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// Alphabetical
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if (StringPrototypeStartsWith(url, 'file:') === true) {
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// dirname
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// filename
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setLazyPathHelpers(meta, url);
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}
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meta.main = !!isMain;
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if (!loader || loader.allowImportMetaResolve) {
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meta.resolve = createImportMetaResolve(url, loader, experimentalImportMetaResolve);
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}
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meta.url = url;
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return meta;
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}
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module.exports = {
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initializeImportMeta,
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};
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