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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.getRenderFunctionFromSassImplementation = getRenderFunctionFromSassImplementation;
- exports.getSassImplementation = getSassImplementation;
- exports.getSassOptions = getSassOptions;
- exports.getWebpackImporter = getWebpackImporter;
- exports.getWebpackResolver = getWebpackResolver;
- exports.isSupportedFibers = isSupportedFibers;
- exports.normalizeSourceMap = normalizeSourceMap;
- var _url = _interopRequireDefault(require("url"));
- var _path = _interopRequireDefault(require("path"));
- var _semver = _interopRequireDefault(require("semver"));
- var _full = require("klona/full");
- var _loaderUtils = require("loader-utils");
- var _neoAsync = _interopRequireDefault(require("neo-async"));
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- function getDefaultSassImplementation() {
- let sassImplPkg = "sass";
- try {
- require.resolve("sass");
- } catch (error) {
- try {
- require.resolve("node-sass");
- sassImplPkg = "node-sass";
- } catch (ignoreError) {
- sassImplPkg = "sass";
- }
- } // eslint-disable-next-line import/no-dynamic-require, global-require
- return require(sassImplPkg);
- }
- /**
- * @public
- * This function is not Webpack-specific and can be used by tools wishing to
- * mimic `sass-loader`'s behaviour, so its signature should not be changed.
- */
- function getSassImplementation(loaderContext, implementation) {
- let resolvedImplementation = implementation;
- if (!resolvedImplementation) {
- try {
- resolvedImplementation = getDefaultSassImplementation();
- } catch (error) {
- loaderContext.emitError(error);
- return;
- }
- }
- const {
- info
- } = resolvedImplementation;
- if (!info) {
- loaderContext.emitError(new Error("Unknown Sass implementation."));
- return;
- }
- const infoParts = info.split("\t");
- if (infoParts.length < 2) {
- loaderContext.emitError(new Error(`Unknown Sass implementation "${info}".`));
- return;
- }
- const [implementationName, version] = infoParts;
- if (implementationName === "dart-sass") {
- if (!_semver.default.satisfies(version, "^1.3.0")) {
- loaderContext.emitError(new Error(`Dart Sass version ${version} is incompatible with ^1.3.0.`));
- } // eslint-disable-next-line consistent-return
- return resolvedImplementation;
- } else if (implementationName === "node-sass") {
- if (!_semver.default.satisfies(version, "^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0")) {
- loaderContext.emitError(new Error(`Node Sass version ${version} is incompatible with ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0.`));
- } // eslint-disable-next-line consistent-return
- return resolvedImplementation;
- }
- loaderContext.emitError(new Error(`Unknown Sass implementation "${implementationName}".`));
- }
- function isSupportedFibers() {
- const [nodeVersion] = process.versions.node.split(".");
- return Number(nodeVersion) < 16;
- }
- function isProductionLikeMode(loaderContext) {
- return loaderContext.mode === "production" || !loaderContext.mode;
- }
- function proxyCustomImporters(importers, loaderContext) {
- return [].concat(importers).map(importer => function proxyImporter(...args) {
- this.webpackLoaderContext = loaderContext;
- return importer.apply(this, args);
- });
- }
- /**
- * Derives the sass options from the loader context and normalizes its values with sane defaults.
- *
- * @param {object} loaderContext
- * @param {object} loaderOptions
- * @param {string} content
- * @param {object} implementation
- * @param {boolean} useSourceMap
- * @returns {Object}
- */
- async function getSassOptions(loaderContext, loaderOptions, content, implementation, useSourceMap) {
- const options = (0, _full.klona)(loaderOptions.sassOptions ? typeof loaderOptions.sassOptions === "function" ? loaderOptions.sassOptions(loaderContext) || {} : loaderOptions.sassOptions : {});
- const isDartSass = implementation.info.includes("dart-sass");
- if (isDartSass && isSupportedFibers()) {
- const shouldTryToResolveFibers = !options.fiber && options.fiber !== false;
- if (shouldTryToResolveFibers) {
- let fibers;
- try {
- fibers = require.resolve("fibers");
- } catch (_error) {// Nothing
- }
- if (fibers) {
- // eslint-disable-next-line global-require, import/no-dynamic-require
- options.fiber = require(fibers);
- }
- } else if (options.fiber === false) {
- // Don't pass the `fiber` option for `sass` (`Dart Sass`)
- delete options.fiber;
- }
- } else {
- // Don't pass the `fiber` option for `node-sass`
- delete options.fiber;
- }
- options.file = loaderContext.resourcePath;
- options.data = loaderOptions.additionalData ? typeof loaderOptions.additionalData === "function" ? await loaderOptions.additionalData(content, loaderContext) : `${loaderOptions.additionalData}\n${content}` : content; // opt.outputStyle
- if (!options.outputStyle && isProductionLikeMode(loaderContext)) {
- options.outputStyle = "compressed";
- }
- if (useSourceMap) {
- // Deliberately overriding the sourceMap option here.
- // node-sass won't produce source maps if the data option is used and options.sourceMap is not a string.
- // In case it is a string, options.sourceMap should be a path where the source map is written.
- // But since we're using the data option, the source map will not actually be written, but
- // all paths in sourceMap.sources will be relative to that path.
- // Pretty complicated... :(
- options.sourceMap = true;
- options.outFile = _path.default.join(loaderContext.rootContext, "style.css.map");
- options.sourceMapContents = true;
- options.omitSourceMapUrl = true;
- options.sourceMapEmbed = false;
- }
- const {
- resourcePath
- } = loaderContext;
- const ext = _path.default.extname(resourcePath); // If we are compiling sass and indentedSyntax isn't set, automatically set it.
- if (ext && ext.toLowerCase() === ".sass" && typeof options.indentedSyntax === "undefined") {
- options.indentedSyntax = true;
- } else {
- options.indentedSyntax = Boolean(options.indentedSyntax);
- } // Allow passing custom importers to `sass`/`node-sass`. Accepts `Function` or an array of `Function`s.
- options.importer = options.importer ? proxyCustomImporters(Array.isArray(options.importer) ? options.importer : [options.importer], loaderContext) : [];
- options.includePaths = [].concat(process.cwd()).concat( // We use `includePaths` in context for resolver, so it should be always absolute
- (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" ? ";" : ":") : []);
- return options;
- } // Examples:
- // - ~package
- // - ~package/
- // - ~@org
- // - ~@org/
- // - ~@org/package
- // - ~@org/package/
- const isModuleImport = /^~([^/]+|[^/]+\/|@[^/]+[/][^/]+|@[^/]+\/?|@[^/]+[/][^/]+\/)$/;
- /**
- * When `sass`/`node-sass` tries to resolve an import, it uses a special algorithm.
- * Since the `sass-loader` uses webpack to resolve the modules, we need to simulate that algorithm.
- * This function returns an array of import paths to try.
- * The last entry in the array is always the original url to enable straight-forward webpack.config aliases.
- *
- * 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).
- * This reduces performance and `dart-sass` always do it on own side.
- *
- * @param {string} url
- * @param {boolean} forWebpackResolver
- * @param {string} rootContext
- * @returns {Array<string>}
- */
- function getPossibleRequests( // eslint-disable-next-line no-shadow
- url, forWebpackResolver = false, rootContext = false) {
- const request = (0, _loaderUtils.urlToRequest)(url, // Maybe it is server-relative URLs
- forWebpackResolver && rootContext); // In case there is module request, send this to webpack resolver
- if (forWebpackResolver && isModuleImport.test(url)) {
- return [...new Set([request, url])];
- } // Keep in mind: ext can also be something like '.datepicker' when the true extension is omitted and the filename contains a dot.
- // @see https://github.com/webpack-contrib/sass-loader/issues/167
- 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.
- // 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:
- // - imports where the URL ends with .css.
- // - imports where the URL begins http:// or https://.
- // - imports where the URL is written as a url().
- // - imports that have media queries.
- //
- // The `node-sass` package sends `@import` ending on `.css` to importer, it is bug, so we skip resolve
- if (ext === ".css") {
- return [];
- }
- const dirname = _path.default.dirname(request);
- const basename = _path.default.basename(request);
- return [...new Set([`${dirname}/_${basename}`, request].concat(forWebpackResolver ? [`${_path.default.dirname(url)}/_${basename}`, url] : []))];
- }
- function promiseResolve(callbackResolve) {
- return (context, request) => new Promise((resolve, reject) => {
- callbackResolve(context, request, (error, result) => {
- if (error) {
- reject(error);
- } else {
- resolve(result);
- }
- });
- });
- }
- const IS_SPECIAL_MODULE_IMPORT = /^~[^/]+$/; // `[drive_letter]:\` + `\\[server]\[sharename]\`
- const IS_NATIVE_WIN32_PATH = /^[a-z]:[/\\]|^\\\\/i;
- /**
- * @public
- * Create the resolve function used in the custom Sass importer.
- *
- * Can be used by external tools to mimic how `sass-loader` works, for example
- * in a Jest transform. Such usages will want to wrap `resolve.create` from
- * [`enhanced-resolve`]{@link https://github.com/webpack/enhanced-resolve} to
- * pass as the `resolverFactory` argument.
- *
- * @param {Function} resolverFactory - A factory function for creating a Webpack
- * resolver.
- * @param {Object} implementation - The imported Sass implementation, both
- * `sass` (Dart Sass) and `node-sass` are supported.
- * @param {string[]} [includePaths] - The list of include paths passed to Sass.
- * @param {boolean} [rootContext] - The configured Webpack root context.
- *
- * @throws If a compatible Sass implementation cannot be found.
- */
- function getWebpackResolver(resolverFactory, implementation, includePaths = [], rootContext = false) {
- async function startResolving(resolutionMap) {
- if (resolutionMap.length === 0) {
- return Promise.reject();
- }
- const [{
- possibleRequests
- }] = resolutionMap;
- if (possibleRequests.length === 0) {
- return Promise.reject();
- }
- const [{
- resolve,
- context
- }] = resolutionMap;
- try {
- return await resolve(context, possibleRequests[0]);
- } catch (_ignoreError) {
- const [, ...tailResult] = possibleRequests;
- if (tailResult.length === 0) {
- const [, ...tailResolutionMap] = resolutionMap;
- return startResolving(tailResolutionMap);
- } // eslint-disable-next-line no-param-reassign
- resolutionMap[0].possibleRequests = tailResult;
- return startResolving(resolutionMap);
- }
- }
- const isDartSass = implementation.info.includes("dart-sass");
- const sassResolve = promiseResolve(resolverFactory({
- alias: [],
- aliasFields: [],
- conditionNames: [],
- descriptionFiles: [],
- extensions: [".sass", ".scss", ".css"],
- exportsFields: [],
- mainFields: [],
- mainFiles: ["_index", "index"],
- modules: [],
- restrictions: [/\.((sa|sc|c)ss)$/i]
- }));
- const webpackResolve = promiseResolve(resolverFactory({
- conditionNames: ["sass", "style"],
- mainFields: ["sass", "style", "main", "..."],
- mainFiles: ["_index", "index", "..."],
- extensions: [".sass", ".scss", ".css"],
- restrictions: [/\.((sa|sc|c)ss)$/i]
- }));
- return (context, request) => {
- const originalRequest = request;
- const isFileScheme = originalRequest.slice(0, 5).toLowerCase() === "file:";
- if (isFileScheme) {
- try {
- // eslint-disable-next-line no-param-reassign
- request = _url.default.fileURLToPath(originalRequest);
- } catch (ignoreError) {
- // eslint-disable-next-line no-param-reassign
- request = request.slice(7);
- }
- }
- let resolutionMap = [];
- const needEmulateSassResolver = // `sass` doesn't support module import
- !IS_SPECIAL_MODULE_IMPORT.test(request) && // We need improve absolute paths handling.
- // Absolute paths should be resolved:
- // - Server-relative URLs - `<context>/path/to/file.ext` (where `<context>` is root context)
- // - 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.
- //
- // Because `sass`/`node-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, rootContext);
- 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, loaderContext.rootContext);
- 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;
- }
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