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202 lines
6.8 KiB
202 lines
6.8 KiB
"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.default = void 0;
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var _path = _interopRequireDefault(require("path"));
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var _neoAsync = _interopRequireDefault(require("neo-async"));
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var _pify = _interopRequireDefault(require("pify"));
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var _semver = _interopRequireDefault(require("semver"));
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var _loaderUtils = require("loader-utils");
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var _formatSassError = _interopRequireDefault(require("./formatSassError"));
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var _webpackImporter = _interopRequireDefault(require("./webpackImporter"));
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var _getSassOptions = _interopRequireDefault(require("./getSassOptions"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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let nodeSassJobQueue = null; // Very hacky check
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function hasGetResolve(loaderContext) {
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return loaderContext.getResolve && // eslint-disable-next-line no-underscore-dangle
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loaderContext._compiler && // eslint-disable-next-line no-underscore-dangle
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loaderContext._compiler.resolverFactory && // eslint-disable-next-line no-underscore-dangle
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loaderContext._compiler.resolverFactory._create && /cachedCleverMerge/.test( // eslint-disable-next-line no-underscore-dangle
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loaderContext._compiler.resolverFactory._create.toString());
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}
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/**
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* The sass-loader makes node-sass and dart-sass available to webpack modules.
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*
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* @this {LoaderContext}
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* @param {string} content
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*/
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function loader(content) {
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const options = (0, _loaderUtils.getOptions)(this) || {};
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const callback = this.async();
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const addNormalizedDependency = file => {
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// node-sass returns POSIX paths
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this.dependency(_path.default.normalize(file));
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};
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if (typeof callback !== 'function') {
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throw new Error('Synchronous compilation is not supported anymore. See https://github.com/webpack-contrib/sass-loader/issues/333');
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}
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let resolve = (0, _pify.default)(this.resolve); // Supported since v4.36.0
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if (hasGetResolve(this)) {
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resolve = this.getResolve({
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mainFields: ['sass', 'style', 'main', '...'],
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mainFiles: ['_index', 'index', '...'],
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extensions: ['.scss', '.sass', '.css', '...']
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});
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}
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const sassOptions = (0, _getSassOptions.default)(this, options, content);
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const shouldUseWebpackImporter = typeof options.webpackImporter === 'boolean' ? options.webpackImporter : true;
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if (shouldUseWebpackImporter) {
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sassOptions.importer.push((0, _webpackImporter.default)(this.resourcePath, resolve, addNormalizedDependency));
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} // Skip empty files, otherwise it will stop webpack, see issue #21
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if (sassOptions.data.trim() === '') {
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callback(null, '');
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return;
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}
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const render = getRenderFuncFromSassImpl( // eslint-disable-next-line import/no-extraneous-dependencies, global-require
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options.implementation || getDefaultSassImpl());
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render(sassOptions, (error, result) => {
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if (error) {
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(0, _formatSassError.default)(error, this.resourcePath);
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if (error.file) {
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this.dependency(error.file);
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}
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callback(error);
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return;
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}
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if (result.map && result.map !== '{}') {
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// eslint-disable-next-line no-param-reassign
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result.map = JSON.parse(result.map); // result.map.file is an optional property that provides the output filename.
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// Since we don't know the final filename in the webpack build chain yet, it makes no sense to have it.
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// eslint-disable-next-line no-param-reassign
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delete result.map.file; // One of the sources is 'stdin' according to dart-sass/node-sass because we've used the data input.
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// Now let's override that value with the correct relative path.
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// Since we specified options.sourceMap = path.join(process.cwd(), "/sass.map"); in getSassOptions,
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// we know that this path is relative to process.cwd(). This is how node-sass works.
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// eslint-disable-next-line no-param-reassign
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const stdinIndex = result.map.sources.findIndex(source => source.indexOf('stdin') !== -1);
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if (stdinIndex !== -1) {
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// eslint-disable-next-line no-param-reassign
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result.map.sources[stdinIndex] = _path.default.relative(process.cwd(), this.resourcePath);
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} // node-sass returns POSIX paths, that's why we need to transform them back to native paths.
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// This fixes an error on windows where the source-map module cannot resolve the source maps.
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// @see https://github.com/webpack-contrib/sass-loader/issues/366#issuecomment-279460722
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// eslint-disable-next-line no-param-reassign
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result.map.sourceRoot = _path.default.normalize(result.map.sourceRoot); // eslint-disable-next-line no-param-reassign
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result.map.sources = result.map.sources.map(_path.default.normalize);
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} else {
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// eslint-disable-next-line no-param-reassign
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result.map = null;
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}
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result.stats.includedFiles.forEach(addNormalizedDependency);
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callback(null, result.css.toString(), result.map);
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});
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}
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/**
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* Verifies that the implementation and version of Sass is supported by this loader.
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*
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* @param {Object} module
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* @returns {Function}
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*/
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function getRenderFuncFromSassImpl(module) {
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const {
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info
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} = module;
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if (!info) {
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throw new Error('Unknown Sass implementation.');
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}
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const components = info.split('\t');
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if (components.length < 2) {
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throw new Error(`Unknown Sass implementation "${info}".`);
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}
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const [implementation, version] = components;
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if (!_semver.default.valid(version)) {
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throw new Error(`Invalid Sass version "${version}".`);
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}
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if (implementation === 'dart-sass') {
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if (!_semver.default.satisfies(version, '^1.3.0')) {
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throw new Error(`Dart Sass version ${version} is incompatible with ^1.3.0.`);
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}
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return module.render.bind(module);
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} else if (implementation === 'node-sass') {
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if (!_semver.default.satisfies(version, '^4.0.0')) {
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throw new Error(`Node Sass version ${version} is incompatible with ^4.0.0.`);
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} // There is an issue with node-sass when async custom importers are used
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// See https://github.com/sass/node-sass/issues/857#issuecomment-93594360
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// We need to use a job queue to make sure that one thread is always available to the UV lib
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if (nodeSassJobQueue === null) {
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const threadPoolSize = Number(process.env.UV_THREADPOOL_SIZE || 4);
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nodeSassJobQueue = _neoAsync.default.queue(module.render.bind(module), threadPoolSize - 1);
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}
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return nodeSassJobQueue.push.bind(nodeSassJobQueue);
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}
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throw new Error(`Unknown Sass implementation "${implementation}".`);
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}
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function getDefaultSassImpl() {
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let sassImplPkg = 'node-sass';
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try {
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require.resolve('node-sass');
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} catch (error) {
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try {
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require.resolve('sass');
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sassImplPkg = 'sass';
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} catch (ignoreError) {
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sassImplPkg = 'node-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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var _default = loader;
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exports.default = _default;
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