491 lines
17 KiB
JavaScript
491 lines
17 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.getSassImplementation = getSassImplementation;
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exports.getSassOptions = getSassOptions;
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exports.getWebpackResolver = getWebpackResolver;
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exports.getWebpackImporter = getWebpackImporter;
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exports.getRenderFunctionFromSassImplementation = getRenderFunctionFromSassImplementation;
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exports.normalizeSourceMap = normalizeSourceMap;
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var _url = _interopRequireDefault(require("url"));
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var _path = _interopRequireDefault(require("path"));
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var _full = require("klona/full");
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var _neoAsync = _interopRequireDefault(require("neo-async"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function getDefaultSassImplementation() {
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let sassImplPkg = "sass";
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try {
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require.resolve("sass");
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} catch (error) {
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try {
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require.resolve("node-sass");
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sassImplPkg = "node-sass";
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} catch (ignoreError) {
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sassImplPkg = "sass";
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}
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} // eslint-disable-next-line import/no-dynamic-require, global-require
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return require(sassImplPkg);
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}
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/**
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* @public
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* This function is not Webpack-specific and can be used by tools wishing to
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* mimic `sass-loader`'s behaviour, so its signature should not be changed.
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*/
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function getSassImplementation(loaderContext, implementation) {
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let resolvedImplementation = implementation;
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if (!resolvedImplementation) {
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try {
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resolvedImplementation = getDefaultSassImplementation();
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} catch (error) {
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loaderContext.emitError(error);
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return;
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}
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}
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const {
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info
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} = resolvedImplementation;
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if (!info) {
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loaderContext.emitError(new Error("Unknown Sass implementation."));
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return;
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}
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const infoParts = info.split("\t");
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if (infoParts.length < 2) {
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loaderContext.emitError(new Error(`Unknown Sass implementation "${info}".`));
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return;
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}
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const [implementationName] = infoParts;
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if (implementationName === "dart-sass") {
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// eslint-disable-next-line consistent-return
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return resolvedImplementation;
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} else if (implementationName === "node-sass") {
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// eslint-disable-next-line consistent-return
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return resolvedImplementation;
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}
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loaderContext.emitError(new Error(`Unknown Sass implementation "${implementationName}".`));
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}
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function isProductionLikeMode(loaderContext) {
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return loaderContext.mode === "production" || !loaderContext.mode;
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}
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function proxyCustomImporters(importers, loaderContext) {
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return [].concat(importers).map(importer => function proxyImporter(...args) {
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this.webpackLoaderContext = loaderContext;
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return importer.apply(this, args);
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});
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}
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/**
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* Derives the sass options from the loader context and normalizes its values with sane defaults.
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*
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* @param {object} loaderContext
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* @param {object} loaderOptions
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* @param {string} content
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* @param {object} implementation
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* @param {boolean} useSourceMap
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* @returns {Object}
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*/
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async function getSassOptions(loaderContext, loaderOptions, content, implementation, useSourceMap) {
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const options = (0, _full.klona)(loaderOptions.sassOptions ? typeof loaderOptions.sassOptions === "function" ? loaderOptions.sassOptions(loaderContext) || {} : loaderOptions.sassOptions : {});
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const isDartSass = implementation.info.includes("dart-sass");
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if (isDartSass) {
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const shouldTryToResolveFibers = !options.fiber && options.fiber !== false;
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if (shouldTryToResolveFibers) {
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let fibers;
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try {
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fibers = require.resolve("fibers");
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} catch (_error) {// Nothing
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}
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if (fibers) {
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// eslint-disable-next-line global-require, import/no-dynamic-require
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options.fiber = require(fibers);
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}
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} else if (options.fiber === false) {
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// Don't pass the `fiber` option for `sass` (`Dart Sass`)
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delete options.fiber;
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}
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} else {
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// Don't pass the `fiber` option for `node-sass`
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delete options.fiber;
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}
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options.file = loaderContext.resourcePath;
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options.data = loaderOptions.additionalData ? typeof loaderOptions.additionalData === "function" ? await loaderOptions.additionalData(content, loaderContext) : `${loaderOptions.additionalData}\n${content}` : content; // opt.outputStyle
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if (!options.outputStyle && isProductionLikeMode(loaderContext)) {
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options.outputStyle = "compressed";
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}
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if (useSourceMap) {
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// Deliberately overriding the sourceMap option here.
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// node-sass won't produce source maps if the data option is used and options.sourceMap is not a string.
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// In case it is a string, options.sourceMap should be a path where the source map is written.
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// But since we're using the data option, the source map will not actually be written, but
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// all paths in sourceMap.sources will be relative to that path.
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// Pretty complicated... :(
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options.sourceMap = true;
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options.outFile = _path.default.join(loaderContext.rootContext, "style.css.map");
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options.sourceMapContents = true;
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options.omitSourceMapUrl = true;
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options.sourceMapEmbed = false;
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}
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const {
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resourcePath
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} = loaderContext;
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const ext = _path.default.extname(resourcePath); // If we are compiling sass and indentedSyntax isn't set, automatically set it.
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if (ext && ext.toLowerCase() === ".sass" && typeof options.indentedSyntax === "undefined") {
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options.indentedSyntax = true;
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} else {
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options.indentedSyntax = Boolean(options.indentedSyntax);
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} // Allow passing custom importers to `sass`/`node-sass`. Accepts `Function` or an array of `Function`s.
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options.importer = options.importer ? proxyCustomImporters(Array.isArray(options.importer) ? options.importer : [options.importer], loaderContext) : [];
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options.includePaths = [].concat(process.cwd()).concat( // We use `includePaths` in context for resolver, so it should be always absolute
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(options.includePaths || []).map(includePath => _path.default.isAbsolute(includePath) ? includePath : _path.default.join(process.cwd(), includePath))).concat(process.env.SASS_PATH ? process.env.SASS_PATH.split(process.platform === "win32" ? ";" : ":") : []);
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return options;
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}
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const MODULE_REQUEST_REGEX = /^[^?]*~/; // Examples:
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// - ~package
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// - ~package/
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// - ~@org
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// - ~@org/
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// - ~@org/package
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// - ~@org/package/
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const IS_MODULE_IMPORT = /^~([^/]+|[^/]+\/|@[^/]+[/][^/]+|@[^/]+\/?|@[^/]+[/][^/]+\/)$/;
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/**
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* When `sass`/`node-sass` tries to resolve an import, it uses a special algorithm.
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* Since the `sass-loader` uses webpack to resolve the modules, we need to simulate that algorithm.
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* This function returns an array of import paths to try.
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* The last entry in the array is always the original url to enable straight-forward webpack.config aliases.
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*
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* We don't need emulate `dart-sass` "It's not clear which file to import." errors (when "file.ext" and "_file.ext" files are present simultaneously in the same directory).
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* This reduces performance and `dart-sass` always do it on own side.
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*
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* @param {string} url
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* @param {boolean} forWebpackResolver
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* @param {string} rootContext
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* @returns {Array<string>}
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*/
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function getPossibleRequests( // eslint-disable-next-line no-shadow
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url, forWebpackResolver = false) {
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let request = url; // In case there is module request, send this to webpack resolver
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if (forWebpackResolver) {
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if (MODULE_REQUEST_REGEX.test(url)) {
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request = request.replace(MODULE_REQUEST_REGEX, "");
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}
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if (IS_MODULE_IMPORT.test(url)) {
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request = request[request.length - 1] === "/" ? request : `${request}/`;
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return [...new Set([request, url])];
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}
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} // Keep in mind: ext can also be something like '.datepicker' when the true extension is omitted and the filename contains a dot.
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// @see https://github.com/webpack-contrib/sass-loader/issues/167
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const ext = _path.default.extname(request).toLowerCase(); // Because @import is also defined in CSS, Sass needs a way of compiling plain CSS @imports without trying to import the files at compile time.
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// To accomplish this, and to ensure SCSS is as much of a superset of CSS as possible, Sass will compile any @imports with the following characteristics to plain CSS imports:
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// - imports where the URL ends with .css.
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// - imports where the URL begins http:// or https://.
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// - imports where the URL is written as a url().
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// - imports that have media queries.
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//
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// The `node-sass` package sends `@import` ending on `.css` to importer, it is bug, so we skip resolve
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if (ext === ".css") {
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return [];
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}
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const dirname = _path.default.dirname(request);
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const basename = _path.default.basename(request);
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return [...new Set([`${dirname}/_${basename}`, request].concat(forWebpackResolver ? [`${_path.default.dirname(url)}/_${basename}`, url] : []))];
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}
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function promiseResolve(callbackResolve) {
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return (context, request) => new Promise((resolve, reject) => {
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callbackResolve(context, request, (error, result) => {
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if (error) {
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reject(error);
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} else {
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resolve(result);
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}
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});
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});
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}
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const IS_SPECIAL_MODULE_IMPORT = /^~[^/]+$/; // `[drive_letter]:\` + `\\[server]\[sharename]\`
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const IS_NATIVE_WIN32_PATH = /^[a-z]:[/\\]|^\\\\/i;
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/**
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* @public
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* Create the resolve function used in the custom Sass importer.
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*
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* Can be used by external tools to mimic how `sass-loader` works, for example
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* in a Jest transform. Such usages will want to wrap `resolve.create` from
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* [`enhanced-resolve`]{@link https://github.com/webpack/enhanced-resolve} to
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* pass as the `resolverFactory` argument.
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*
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* @param {Function} resolverFactory - A factory function for creating a Webpack
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* resolver.
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* @param {Object} implementation - The imported Sass implementation, both
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* `sass` (Dart Sass) and `node-sass` are supported.
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* @param {string[]} [includePaths] - The list of include paths passed to Sass.
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*
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* @throws If a compatible Sass implementation cannot be found.
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*/
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function getWebpackResolver(resolverFactory, implementation, includePaths = []) {
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async function startResolving(resolutionMap) {
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if (resolutionMap.length === 0) {
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return Promise.reject();
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}
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const [{
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possibleRequests
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}] = resolutionMap;
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if (possibleRequests.length === 0) {
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return Promise.reject();
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}
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const [{
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resolve,
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context
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}] = resolutionMap;
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try {
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return await resolve(context, possibleRequests[0]);
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} catch (_ignoreError) {
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const [, ...tailResult] = possibleRequests;
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if (tailResult.length === 0) {
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const [, ...tailResolutionMap] = resolutionMap;
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return startResolving(tailResolutionMap);
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} // eslint-disable-next-line no-param-reassign
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resolutionMap[0].possibleRequests = tailResult;
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return startResolving(resolutionMap);
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}
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}
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const isDartSass = implementation.info.includes("dart-sass");
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const sassResolve = promiseResolve(resolverFactory({
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alias: [],
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aliasFields: [],
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conditionNames: [],
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descriptionFiles: [],
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extensions: [".sass", ".scss", ".css"],
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exportsFields: [],
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mainFields: [],
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mainFiles: ["_index", "index"],
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modules: [],
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restrictions: [/\.((sa|sc|c)ss)$/i],
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preferRelative: true
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}));
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const webpackResolve = promiseResolve(resolverFactory({
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dependencyType: "sass",
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conditionNames: ["sass", "style"],
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mainFields: ["sass", "style", "main", "..."],
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mainFiles: ["_index", "index", "..."],
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extensions: [".sass", ".scss", ".css"],
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restrictions: [/\.((sa|sc|c)ss)$/i],
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preferRelative: true
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}));
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return (context, request) => {
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// See https://github.com/webpack/webpack/issues/12340
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// Because `node-sass` calls our importer before `1. Filesystem imports relative to the base file.`
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// custom importer may not return `{ file: '/path/to/name.ext' }` and therefore our `context` will be relative
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if (!isDartSass && !_path.default.isAbsolute(context)) {
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return Promise.reject();
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}
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const originalRequest = request;
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const isFileScheme = originalRequest.slice(0, 5).toLowerCase() === "file:";
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if (isFileScheme) {
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try {
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// eslint-disable-next-line no-param-reassign
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request = _url.default.fileURLToPath(originalRequest);
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} catch (ignoreError) {
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// eslint-disable-next-line no-param-reassign
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request = request.slice(7);
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}
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}
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let resolutionMap = [];
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const needEmulateSassResolver = // `sass` doesn't support module import
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!IS_SPECIAL_MODULE_IMPORT.test(request) && // We need improve absolute paths handling.
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// Absolute paths should be resolved:
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// - Server-relative URLs - `<context>/path/to/file.ext` (where `<context>` is root context)
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// - Absolute path - `/full/path/to/file.ext` or `C:\\full\path\to\file.ext`
|
||
|
|
!isFileScheme && !originalRequest.startsWith("/") && !IS_NATIVE_WIN32_PATH.test(originalRequest);
|
||
|
|
|
||
|
|
if (includePaths.length > 0 && needEmulateSassResolver) {
|
||
|
|
// The order of import precedence is as follows:
|
||
|
|
//
|
||
|
|
// 1. Filesystem imports relative to the base file.
|
||
|
|
// 2. Custom importer imports.
|
||
|
|
// 3. Filesystem imports relative to the working directory.
|
||
|
|
// 4. Filesystem imports relative to an `includePaths` path.
|
||
|
|
// 5. Filesystem imports relative to a `SASS_PATH` path.
|
||
|
|
//
|
||
|
|
// `sass` run custom importers before `3`, `4` and `5` points, we need to emulate this behavior to avoid wrong resolution.
|
||
|
|
const sassPossibleRequests = getPossibleRequests(request); // `node-sass` calls our importer before `1. Filesystem imports relative to the base file.`, so we need emulate this too
|
||
|
|
|
||
|
|
if (!isDartSass) {
|
||
|
|
resolutionMap = resolutionMap.concat({
|
||
|
|
resolve: sassResolve,
|
||
|
|
context: _path.default.dirname(context),
|
||
|
|
possibleRequests: sassPossibleRequests
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
resolutionMap = resolutionMap.concat( // eslint-disable-next-line no-shadow
|
||
|
|
includePaths.map(context => {
|
||
|
|
return {
|
||
|
|
resolve: sassResolve,
|
||
|
|
context,
|
||
|
|
possibleRequests: sassPossibleRequests
|
||
|
|
};
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
|
||
|
|
const webpackPossibleRequests = getPossibleRequests(request, true);
|
||
|
|
resolutionMap = resolutionMap.concat({
|
||
|
|
resolve: webpackResolve,
|
||
|
|
context: _path.default.dirname(context),
|
||
|
|
possibleRequests: webpackPossibleRequests
|
||
|
|
});
|
||
|
|
return startResolving(resolutionMap);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
const matchCss = /\.css$/i;
|
||
|
|
|
||
|
|
function getWebpackImporter(loaderContext, implementation, includePaths) {
|
||
|
|
const resolve = getWebpackResolver(loaderContext.getResolve, implementation, includePaths);
|
||
|
|
return (originalUrl, prev, done) => {
|
||
|
|
resolve(prev, originalUrl).then(result => {
|
||
|
|
// Add the result as dependency.
|
||
|
|
// Although we're also using stats.includedFiles, this might come in handy when an error occurs.
|
||
|
|
// In this case, we don't get stats.includedFiles from node-sass/sass.
|
||
|
|
loaderContext.addDependency(_path.default.normalize(result)); // By removing the CSS file extension, we trigger node-sass to include the CSS file instead of just linking it.
|
||
|
|
|
||
|
|
done({
|
||
|
|
file: result.replace(matchCss, "")
|
||
|
|
});
|
||
|
|
}) // Catch all resolving errors, return the original file and pass responsibility back to other custom importers
|
||
|
|
.catch(() => {
|
||
|
|
done({
|
||
|
|
file: originalUrl
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
let nodeSassJobQueue = null;
|
||
|
|
/**
|
||
|
|
* Verifies that the implementation and version of Sass is supported by this loader.
|
||
|
|
*
|
||
|
|
* @param {Object} implementation
|
||
|
|
* @returns {Function}
|
||
|
|
*/
|
||
|
|
|
||
|
|
function getRenderFunctionFromSassImplementation(implementation) {
|
||
|
|
const isDartSass = implementation.info.includes("dart-sass");
|
||
|
|
|
||
|
|
if (isDartSass) {
|
||
|
|
return implementation.render.bind(implementation);
|
||
|
|
} // There is an issue with node-sass when async custom importers are used
|
||
|
|
// See https://github.com/sass/node-sass/issues/857#issuecomment-93594360
|
||
|
|
// We need to use a job queue to make sure that one thread is always available to the UV lib
|
||
|
|
|
||
|
|
|
||
|
|
if (nodeSassJobQueue === null) {
|
||
|
|
const threadPoolSize = Number(process.env.UV_THREADPOOL_SIZE || 4);
|
||
|
|
nodeSassJobQueue = _neoAsync.default.queue(implementation.render.bind(implementation), threadPoolSize - 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
return nodeSassJobQueue.push.bind(nodeSassJobQueue);
|
||
|
|
}
|
||
|
|
|
||
|
|
const ABSOLUTE_SCHEME = /^[A-Za-z0-9+\-.]+:/;
|
||
|
|
|
||
|
|
function getURLType(source) {
|
||
|
|
if (source[0] === "/") {
|
||
|
|
if (source[1] === "/") {
|
||
|
|
return "scheme-relative";
|
||
|
|
}
|
||
|
|
|
||
|
|
return "path-absolute";
|
||
|
|
}
|
||
|
|
|
||
|
|
if (IS_NATIVE_WIN32_PATH.test(source)) {
|
||
|
|
return "path-absolute";
|
||
|
|
}
|
||
|
|
|
||
|
|
return ABSOLUTE_SCHEME.test(source) ? "absolute" : "path-relative";
|
||
|
|
}
|
||
|
|
|
||
|
|
function normalizeSourceMap(map, rootContext) {
|
||
|
|
const newMap = map; // result.map.file is an optional property that provides the output filename.
|
||
|
|
// Since we don't know the final filename in the webpack build chain yet, it makes no sense to have it.
|
||
|
|
// eslint-disable-next-line no-param-reassign
|
||
|
|
|
||
|
|
delete newMap.file; // eslint-disable-next-line no-param-reassign
|
||
|
|
|
||
|
|
newMap.sourceRoot = ""; // node-sass returns POSIX paths, that's why we need to transform them back to native paths.
|
||
|
|
// This fixes an error on windows where the source-map module cannot resolve the source maps.
|
||
|
|
// @see https://github.com/webpack-contrib/sass-loader/issues/366#issuecomment-279460722
|
||
|
|
// eslint-disable-next-line no-param-reassign
|
||
|
|
|
||
|
|
newMap.sources = newMap.sources.map(source => {
|
||
|
|
const sourceType = getURLType(source); // Do no touch `scheme-relative`, `path-absolute` and `absolute` types
|
||
|
|
|
||
|
|
if (sourceType === "path-relative") {
|
||
|
|
return _path.default.resolve(rootContext, _path.default.normalize(source));
|
||
|
|
}
|
||
|
|
|
||
|
|
return source;
|
||
|
|
});
|
||
|
|
return newMap;
|
||
|
|
}
|