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705 lines
27 KiB
705 lines
27 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.errorFactory = errorFactory;
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exports.getCompileFn = getCompileFn;
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exports.getModernWebpackImporter = getModernWebpackImporter;
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exports.getSassImplementation = getSassImplementation;
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exports.getSassOptions = getSassOptions;
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exports.getWebpackImporter = getWebpackImporter;
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exports.getWebpackResolver = getWebpackResolver;
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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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function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
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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-embedded");
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sassImplPkg = "sass-embedded";
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} catch (ignoreError) {
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try {
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require.resolve("sass");
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} catch (_ignoreError) {
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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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}
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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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* 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.
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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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resolvedImplementation = getDefaultSassImplementation();
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}
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if (typeof resolvedImplementation === "string") {
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// eslint-disable-next-line import/no-dynamic-require, global-require
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resolvedImplementation = require(resolvedImplementation);
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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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throw new Error("Unknown Sass implementation.");
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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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throw new Error(`Unknown Sass implementation "${info}".`);
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}
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const [implementationName] = infoParts;
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if (implementationName === "dart-sass") {
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// eslint-disable-next-line consistent-return
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return resolvedImplementation;
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} else if (implementationName === "node-sass") {
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// eslint-disable-next-line consistent-return
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return resolvedImplementation;
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} else if (implementationName === "sass-embedded") {
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// eslint-disable-next-line consistent-return
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return resolvedImplementation;
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}
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throw new Error(`Unknown Sass implementation "${implementationName}".`);
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}
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/**
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* @param {any} loaderContext
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* @returns {boolean}
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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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const self = {
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...this,
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webpackLoaderContext: loaderContext
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};
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return importer.apply(self, 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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* @param {"legacy" | "modern" | "modern-compiler"} apiType
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* @returns {Object}
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*/
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async function getSassOptions(loaderContext, loaderOptions, content, implementation, useSourceMap, apiType) {
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const options = loaderOptions.sassOptions ? typeof loaderOptions.sassOptions === "function" ? loaderOptions.sassOptions(loaderContext) || {} : loaderOptions.sassOptions : {};
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const sassOptions = {
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...options,
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data: loaderOptions.additionalData ? typeof loaderOptions.additionalData === "function" ? await loaderOptions.additionalData(content, loaderContext) : `${loaderOptions.additionalData}\n${content}` : content
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};
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if (!sassOptions.logger) {
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const needEmitWarning = loaderOptions.warnRuleAsWarning !== false;
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const logger = loaderContext.getLogger("sass-loader");
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const formatSpan = span => `Warning on line ${span.start.line}, column ${span.start.column} of ${span.url || "-"}:${span.start.line}:${span.start.column}:\n`;
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const formatDebugSpan = span => `[debug:${span.start.line}:${span.start.column}] `;
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sassOptions.logger = {
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debug(message, loggerOptions) {
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let builtMessage = "";
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if (loggerOptions.span) {
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builtMessage = formatDebugSpan(loggerOptions.span);
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}
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builtMessage += message;
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logger.debug(builtMessage);
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},
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warn(message, loggerOptions) {
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let builtMessage = "";
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if (loggerOptions.deprecation) {
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builtMessage += "Deprecation ";
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}
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if (loggerOptions.span) {
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builtMessage += formatSpan(loggerOptions.span);
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}
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builtMessage += message;
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if (loggerOptions.span && loggerOptions.span.context) {
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builtMessage += `\n\n${loggerOptions.span.start.line} | ${loggerOptions.span.context}`;
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}
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if (loggerOptions.stack && loggerOptions.stack !== "null") {
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builtMessage += `\n\n${loggerOptions.stack}`;
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}
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if (needEmitWarning) {
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const warning = new Error(builtMessage);
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warning.name = "SassWarning";
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warning.stack = null;
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loaderContext.emitWarning(warning);
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} else {
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logger.warn(builtMessage);
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}
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}
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};
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}
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const isModernAPI = apiType === "modern" || apiType === "modern-compiler";
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const {
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resourcePath
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} = loaderContext;
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if (isModernAPI) {
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sassOptions.url = _url.default.pathToFileURL(resourcePath);
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// opt.outputStyle
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if (!sassOptions.style && isProductionLikeMode(loaderContext)) {
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sassOptions.style = "compressed";
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}
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if (useSourceMap) {
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sassOptions.sourceMap = true;
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}
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// If we are compiling sass and indentedSyntax isn't set, automatically set it.
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if (typeof sassOptions.syntax === "undefined") {
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const ext = _path.default.extname(resourcePath);
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if (ext && ext.toLowerCase() === ".scss") {
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sassOptions.syntax = "scss";
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} else if (ext && ext.toLowerCase() === ".sass") {
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sassOptions.syntax = "indented";
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} else if (ext && ext.toLowerCase() === ".css") {
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sassOptions.syntax = "css";
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}
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}
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sassOptions.loadPaths = [].concat(
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// We use `loadPaths` in context for resolver, so it should be always absolute
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(sassOptions.loadPaths ? sassOptions.loadPaths.slice() : []).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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sassOptions.importers = sassOptions.importers ? Array.isArray(sassOptions.importers) ? sassOptions.importers.slice() : [sassOptions.importers] : [];
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} else {
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sassOptions.file = resourcePath;
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// opt.outputStyle
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if (!sassOptions.outputStyle && isProductionLikeMode(loaderContext)) {
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sassOptions.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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sassOptions.sourceMap = true;
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sassOptions.outFile = _path.default.join(loaderContext.rootContext, "style.css.map");
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sassOptions.sourceMapContents = true;
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sassOptions.omitSourceMapUrl = true;
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sassOptions.sourceMapEmbed = false;
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}
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const ext = _path.default.extname(resourcePath);
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// If we are compiling sass and indentedSyntax isn't set, automatically set it.
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if (ext && ext.toLowerCase() === ".sass" && typeof sassOptions.indentedSyntax === "undefined") {
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sassOptions.indentedSyntax = true;
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} else {
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sassOptions.indentedSyntax = Boolean(sassOptions.indentedSyntax);
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}
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// Allow passing custom importers to `sass`/`node-sass`. Accepts `Function` or an array of `Function`s.
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sassOptions.importer = sassOptions.importer ? proxyCustomImporters(Array.isArray(sassOptions.importer) ? sassOptions.importer.slice() : [sassOptions.importer], loaderContext) : [];
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// Regression on the `sass-embedded` side
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if (loaderOptions.webpackImporter === false && sassOptions.importer.length === 0) {
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// eslint-disable-next-line no-undefined
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sassOptions.importer = undefined;
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}
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sassOptions.includePaths = [].concat(process.cwd()).concat(
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// We use `includePaths` in context for resolver, so it should be always absolute
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(sassOptions.includePaths ? sassOptions.includePaths.slice() : []).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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if (typeof sassOptions.charset === "undefined") {
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sassOptions.charset = true;
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}
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}
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return sassOptions;
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}
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const MODULE_REQUEST_REGEX = /^[^?]*~/;
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// 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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const IS_PKG_SCHEME = /^pkg:/i;
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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 {boolean} fromImport
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* @returns {Array<string>}
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*/
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function getPossibleRequests(
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// eslint-disable-next-line no-shadow
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url, forWebpackResolver = false, fromImport = false) {
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let request = url;
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// 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_PKG_SCHEME.test(url)) {
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request = `${request.slice(4)}`;
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return [...new Set([request, url])];
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}
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if (IS_MODULE_IMPORT.test(url) || IS_PKG_SCHEME.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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}
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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 extension = _path.default.extname(request).toLowerCase();
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// 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 (extension === ".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 normalizedDirname = dirname === "." ? "" : `${dirname}/`;
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const basename = _path.default.basename(request);
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const basenameWithoutExtension = _path.default.basename(request, extension);
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return [...new Set([].concat(fromImport ? [`${normalizedDirname}_${basenameWithoutExtension}.import${extension}`, `${normalizedDirname}${basenameWithoutExtension}.import${extension}`] : []).concat([`${normalizedDirname}_${basename}`, `${normalizedDirname}${basename}`]).concat(forWebpackResolver ? [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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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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}
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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 IS_SPECIAL_MODULE_IMPORT = /^~[^/]+$/;
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// `[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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const isModernSass = implementation && typeof implementation.compileStringAsync !== "undefined";
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// We only have one difference with the built-in sass resolution logic and out resolution logic:
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// First, we look at the files starting with `_`, then without `_` (i.e. `_name.sass`, `_name.scss`, `_name.css`, `name.sass`, `name.scss`, `name.css`),
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// although `sass` look together by extensions (i.e. `_name.sass`/`name.sass`/`_name.scss`/`name.scss`/`_name.css`/`name.css`).
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// It shouldn't be a problem because `sass` throw errors:
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// - on having `_name.sass` and `name.sass` (extension can be `sass`, `scss` or `css`) in the same directory
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// - on having `_name.sass` and `_name.scss` in the same directory
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//
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// Also `sass` prefer `sass`/`scss` over `css`.
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const sassModuleResolve = 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)$/i],
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preferRelative: true
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}));
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const sassImportResolve = promiseResolve(resolverFactory({
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alias: [],
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aliasFields: [],
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conditionNames: [],
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descriptionFiles: [],
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extensions: [".sass", ".scss", ".css"],
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exportsFields: [],
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mainFields: [],
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mainFiles: ["_index.import", "_index", "index.import", "index"],
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modules: [],
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restrictions: [/\.((sa|sc|c)ss)$/i],
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preferRelative: true
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}));
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const webpackModuleResolve = 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)$/i],
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preferRelative: true
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}));
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const webpackImportResolve = promiseResolve(resolverFactory({
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dependencyType: "sass",
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conditionNames: ["sass", "style", "..."],
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mainFields: ["sass", "style", "main", "..."],
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mainFiles: ["_index.import", "_index", "index.import", "index", "..."],
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extensions: [".sass", ".scss", ".css"],
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restrictions: [/\.((sa|sc|c)ss)$/i],
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preferRelative: true
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}));
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return (context, request, fromImport) => {
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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 (!isModernSass && !_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 =
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// `sass` doesn't support module import
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!IS_SPECIAL_MODULE_IMPORT.test(request) &&
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// don't handle `pkg:` scheme
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!IS_PKG_SCHEME.test(request) &&
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// 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`
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|
!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, false, fromImport);
|
|
|
|
// `node-sass` calls our importer before `1. Filesystem imports relative to the base file.`, so we need emulate this too
|
|
if (!isModernSass) {
|
|
resolutionMap = resolutionMap.concat({
|
|
resolve: fromImport ? sassImportResolve : sassModuleResolve,
|
|
context: _path.default.dirname(context),
|
|
possibleRequests: sassPossibleRequests
|
|
});
|
|
}
|
|
resolutionMap = resolutionMap.concat(
|
|
// eslint-disable-next-line no-shadow
|
|
includePaths.map(context => {
|
|
return {
|
|
resolve: fromImport ? sassImportResolve : sassModuleResolve,
|
|
context,
|
|
possibleRequests: sassPossibleRequests
|
|
};
|
|
}));
|
|
}
|
|
const webpackPossibleRequests = getPossibleRequests(request, true, fromImport);
|
|
resolutionMap = resolutionMap.concat({
|
|
resolve: fromImport ? webpackImportResolve : webpackModuleResolve,
|
|
context: _path.default.dirname(context),
|
|
possibleRequests: webpackPossibleRequests
|
|
});
|
|
return startResolving(resolutionMap);
|
|
};
|
|
}
|
|
const MATCH_CSS = /\.css$/i;
|
|
function getModernWebpackImporter(loaderContext, implementation, loadPaths) {
|
|
const resolve = getWebpackResolver(loaderContext.getResolve, implementation, loadPaths);
|
|
return {
|
|
async canonicalize(originalUrl, context) {
|
|
const {
|
|
fromImport
|
|
} = context;
|
|
const prev = context.containingUrl ? _url.default.fileURLToPath(context.containingUrl.toString()) : loaderContext.resourcePath;
|
|
let result;
|
|
try {
|
|
result = await resolve(prev, originalUrl, fromImport);
|
|
} catch (err) {
|
|
// If no stylesheets are found, the importer should return null.
|
|
return null;
|
|
}
|
|
loaderContext.addDependency(_path.default.normalize(result));
|
|
return _url.default.pathToFileURL(result);
|
|
},
|
|
async load(canonicalUrl) {
|
|
const ext = _path.default.extname(canonicalUrl.pathname);
|
|
let syntax;
|
|
if (ext && ext.toLowerCase() === ".scss") {
|
|
syntax = "scss";
|
|
} else if (ext && ext.toLowerCase() === ".sass") {
|
|
syntax = "indented";
|
|
} else if (ext && ext.toLowerCase() === ".css") {
|
|
syntax = "css";
|
|
} else {
|
|
// Fallback to default value
|
|
syntax = "scss";
|
|
}
|
|
try {
|
|
// eslint-disable-next-line no-shadow
|
|
const contents = await new Promise((resolve, reject) => {
|
|
// Old version of `enhanced-resolve` supports only path as a string
|
|
// TODO simplify in the next major release and pass URL
|
|
const canonicalPath = _url.default.fileURLToPath(canonicalUrl);
|
|
loaderContext.fs.readFile(canonicalPath, "utf8", (err, content) => {
|
|
if (err) {
|
|
reject(err);
|
|
return;
|
|
}
|
|
resolve(content);
|
|
});
|
|
});
|
|
return {
|
|
contents,
|
|
syntax,
|
|
sourceMapUrl: canonicalUrl
|
|
};
|
|
} catch (err) {
|
|
return null;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
function getWebpackImporter(loaderContext, implementation, includePaths) {
|
|
const resolve = getWebpackResolver(loaderContext.getResolve, implementation, includePaths);
|
|
return function importer(originalUrl, prev, done) {
|
|
const {
|
|
fromImport
|
|
} = this;
|
|
resolve(prev, originalUrl, fromImport).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(MATCH_CSS, "")
|
|
});
|
|
})
|
|
// Catch all resolving errors, return the original file and pass responsibility back to other custom importers
|
|
.catch(() => {
|
|
done({
|
|
file: originalUrl
|
|
});
|
|
});
|
|
};
|
|
}
|
|
let nodeSassJobQueue = null;
|
|
const sassModernCompilers = new WeakMap();
|
|
|
|
/**
|
|
* Verifies that the implementation and version of Sass is supported by this loader.
|
|
*
|
|
* @param {Object} loaderContext
|
|
* @param {Object} implementation
|
|
* @param {"legacy" | "modern" | "modern-compiler"} apiType
|
|
* @returns {Function}
|
|
*/
|
|
function getCompileFn(loaderContext, implementation, apiType) {
|
|
if (typeof implementation.compileStringAsync !== "undefined") {
|
|
if (apiType === "modern") {
|
|
return sassOptions => {
|
|
const {
|
|
data,
|
|
...rest
|
|
} = sassOptions;
|
|
return implementation.compileStringAsync(data, rest);
|
|
};
|
|
}
|
|
if (apiType === "modern-compiler") {
|
|
return async sassOptions => {
|
|
// eslint-disable-next-line no-underscore-dangle
|
|
const webpackCompiler = loaderContext._compiler;
|
|
const {
|
|
data,
|
|
...rest
|
|
} = sassOptions;
|
|
|
|
// Some people can run the loader in a multi-threading way;
|
|
// there is no webpack compiler object in such case.
|
|
if (webpackCompiler) {
|
|
if (!sassModernCompilers.has(webpackCompiler)) {
|
|
// Create a long-running compiler process that can be reused
|
|
// for compiling individual files.
|
|
const compiler = await implementation.initAsyncCompiler();
|
|
|
|
// Check again because awaiting the initialization function
|
|
// introduces a race condition.
|
|
if (!sassModernCompilers.has(webpackCompiler)) {
|
|
sassModernCompilers.set(webpackCompiler, compiler);
|
|
webpackCompiler.hooks.shutdown.tap("sass-loader", () => {
|
|
compiler.dispose();
|
|
});
|
|
}
|
|
}
|
|
return sassModernCompilers.get(webpackCompiler).compileStringAsync(data, rest);
|
|
}
|
|
return implementation.compileStringAsync(data, rest);
|
|
};
|
|
}
|
|
return sassOptions => new Promise((resolve, reject) => {
|
|
implementation.render(sassOptions, (error, result) => {
|
|
if (error) {
|
|
reject(error);
|
|
return;
|
|
}
|
|
resolve(result);
|
|
});
|
|
});
|
|
}
|
|
if (apiType === "modern" || apiType === "modern-compiler") {
|
|
throw new Error("Modern API is not supported for 'node-sass'");
|
|
}
|
|
|
|
// 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);
|
|
// Only used for `node-sass`, so let's load it lazily
|
|
// eslint-disable-next-line global-require
|
|
const async = require("neo-async");
|
|
nodeSassJobQueue = async.queue(implementation.render.bind(implementation), threadPoolSize - 1);
|
|
}
|
|
return sassOptions => new Promise((resolve, reject) => {
|
|
nodeSassJobQueue.push.bind(nodeSassJobQueue)(sassOptions, (error, result) => {
|
|
if (error) {
|
|
reject(error);
|
|
return;
|
|
}
|
|
resolve(result);
|
|
});
|
|
});
|
|
}
|
|
const ABSOLUTE_SCHEME = /^[A-Za-z0-9+\-.]+:/;
|
|
|
|
/**
|
|
* @param {string} source
|
|
* @returns {"absolute" | "scheme-relative" | "path-absolute" | "path-absolute"}
|
|
*/
|
|
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
|
|
if (typeof newMap.file !== "undefined") {
|
|
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 (except `file:`)
|
|
if (sourceType === "absolute" && /^file:/i.test(source)) {
|
|
return _url.default.fileURLToPath(source);
|
|
} else if (sourceType === "path-relative") {
|
|
return _path.default.resolve(rootContext, _path.default.normalize(source));
|
|
}
|
|
return source;
|
|
});
|
|
return newMap;
|
|
}
|
|
function errorFactory(error) {
|
|
let message;
|
|
if (error.formatted) {
|
|
message = error.formatted.replace(/^(.+)?Error: /, "");
|
|
} else {
|
|
// Keep original error if `sassError.formatted` is unavailable
|
|
message = (error.message || error.toString()).replace(/^(.+)?Error: /, "");
|
|
}
|
|
const obj = new Error(message, {
|
|
cause: error
|
|
});
|
|
obj.name = error.name;
|
|
obj.stack = null;
|
|
return obj;
|
|
} |