hexo/node_modules/sass-loader/dist/utils.js

635 lines
24 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.errorFactory = errorFactory;
exports.getCompileFn = getCompileFn;
exports.getModernWebpackImporter = getModernWebpackImporter;
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"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function getDefaultSassImplementation() {
let sassImplPkg = "sass";
try {
require.resolve("sass");
} catch (ignoreError) {
try {
require.resolve("node-sass");
sassImplPkg = "node-sass";
} catch (_ignoreError) {
try {
require.resolve("sass-embedded");
sassImplPkg = "sass-embedded";
} catch (__ignoreError) {
sassImplPkg = "sass";
}
}
}
// eslint-disable-next-line import/no-dynamic-require, global-require
return require(sassImplPkg);
}
/**
* 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) {
resolvedImplementation = getDefaultSassImplementation();
}
if (typeof resolvedImplementation === "string") {
// eslint-disable-next-line import/no-dynamic-require, global-require
resolvedImplementation = require(resolvedImplementation);
}
const {
info
} = resolvedImplementation;
if (!info) {
throw new Error("Unknown Sass implementation.");
}
const infoParts = info.split("\t");
if (infoParts.length < 2) {
throw new Error(`Unknown Sass implementation "${info}".`);
}
const [implementationName] = infoParts;
if (implementationName === "dart-sass") {
// eslint-disable-next-line consistent-return
return resolvedImplementation;
} else if (implementationName === "node-sass") {
// eslint-disable-next-line consistent-return
return resolvedImplementation;
} else if (implementationName === "sass-embedded") {
// eslint-disable-next-line consistent-return
return resolvedImplementation;
}
throw new Error(`Unknown Sass implementation "${implementationName}".`);
}
/**
* @param {any} loaderContext
* @returns {boolean}
*/
function isProductionLikeMode(loaderContext) {
return loaderContext.mode === "production" || !loaderContext.mode;
}
function proxyCustomImporters(importers, loaderContext) {
return [].concat(importers).map(importer => function proxyImporter(...args) {
const self = {
...this,
webpackLoaderContext: loaderContext
};
return importer.apply(self, args);
});
}
function isSupportedFibers() {
const [nodeVersion] = process.versions.node.split(".");
return Number(nodeVersion) < 16;
}
/**
* 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 = loaderOptions.sassOptions ? typeof loaderOptions.sassOptions === "function" ? loaderOptions.sassOptions(loaderContext) || {} : loaderOptions.sassOptions : {};
const sassOptions = {
...options,
data: loaderOptions.additionalData ? typeof loaderOptions.additionalData === "function" ? await loaderOptions.additionalData(content, loaderContext) : `${loaderOptions.additionalData}\n${content}` : content
};
if (!sassOptions.logger) {
const needEmitWarning = loaderOptions.warnRuleAsWarning !== false;
const logger = loaderContext.getLogger("sass-loader");
const formatSpan = span => `${span.url || "-"}:${span.start.line}:${span.start.column}: `;
const formatDebugSpan = span => `[debug:${span.start.line}:${span.start.column}] `;
sassOptions.logger = {
debug(message, loggerOptions) {
let builtMessage = "";
if (loggerOptions.span) {
builtMessage = formatDebugSpan(loggerOptions.span);
}
builtMessage += message;
logger.debug(builtMessage);
},
warn(message, loggerOptions) {
let builtMessage = "";
if (loggerOptions.deprecation) {
builtMessage += "Deprecation ";
}
if (loggerOptions.span && !loggerOptions.stack) {
builtMessage = formatSpan(loggerOptions.span);
}
builtMessage += message;
if (loggerOptions.stack) {
builtMessage += `\n\n${loggerOptions.stack}`;
}
if (needEmitWarning) {
const warning = new Error(builtMessage);
warning.name = "SassWarning";
warning.stack = null;
loaderContext.emitWarning(warning);
} else {
logger.warn(builtMessage);
}
}
};
}
const isModernAPI = loaderOptions.api === "modern";
const {
resourcePath
} = loaderContext;
if (isModernAPI) {
sassOptions.url = _url.default.pathToFileURL(resourcePath);
// opt.outputStyle
if (!sassOptions.style && isProductionLikeMode(loaderContext)) {
sassOptions.style = "compressed";
}
if (useSourceMap) {
sassOptions.sourceMap = true;
}
// If we are compiling sass and indentedSyntax isn't set, automatically set it.
if (typeof sassOptions.syntax === "undefined") {
const ext = _path.default.extname(resourcePath);
if (ext && ext.toLowerCase() === ".scss") {
sassOptions.syntax = "scss";
} else if (ext && ext.toLowerCase() === ".sass") {
sassOptions.syntax = "indented";
} else if (ext && ext.toLowerCase() === ".css") {
sassOptions.syntax = "css";
}
}
sassOptions.importers = sassOptions.importers ? Array.isArray(sassOptions.importers) ? sassOptions.importers.slice() : [sassOptions.importers] : [];
} else {
sassOptions.file = resourcePath;
const isDartSass = implementation.info.includes("dart-sass");
if (isDartSass && isSupportedFibers()) {
const shouldTryToResolveFibers = !sassOptions.fiber && sassOptions.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
sassOptions.fiber = require(fibers);
}
} else if (sassOptions.fiber === false) {
// Don't pass the `fiber` option for `sass` (`Dart Sass`)
delete sassOptions.fiber;
}
} else {
// Don't pass the `fiber` option for `node-sass`
delete sassOptions.fiber;
}
// opt.outputStyle
if (!sassOptions.outputStyle && isProductionLikeMode(loaderContext)) {
sassOptions.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... :(
sassOptions.sourceMap = true;
sassOptions.outFile = _path.default.join(loaderContext.rootContext, "style.css.map");
sassOptions.sourceMapContents = true;
sassOptions.omitSourceMapUrl = true;
sassOptions.sourceMapEmbed = false;
}
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 sassOptions.indentedSyntax === "undefined") {
sassOptions.indentedSyntax = true;
} else {
sassOptions.indentedSyntax = Boolean(sassOptions.indentedSyntax);
}
// Allow passing custom importers to `sass`/`node-sass`. Accepts `Function` or an array of `Function`s.
sassOptions.importer = sassOptions.importer ? proxyCustomImporters(Array.isArray(sassOptions.importer) ? sassOptions.importer.slice() : [sassOptions.importer], loaderContext) : [];
sassOptions.includePaths = [].concat(process.cwd()).concat(
// We use `includePaths` in context for resolver, so it should be always absolute
(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" ? ";" : ":") : []);
if (typeof sassOptions.charset === "undefined") {
sassOptions.charset = true;
}
}
return sassOptions;
}
const MODULE_REQUEST_REGEX = /^[^?]*~/;
// Examples:
// - ~package
// - ~package/
// - ~@org
// - ~@org/
// - ~@org/package
// - ~@org/package/
const IS_MODULE_IMPORT = /^~([^/]+|[^/]+\/|@[^/]+[/][^/]+|@[^/]+\/?|@[^/]+[/][^/]+\/)$/;
/**
* When `sass`/`node-sass` tries to resolve an import, it uses a special algorithm.
* Since the `sass-loader` uses webpack to resolve the modules, we need to simulate that algorithm.
* This function returns an array of import paths to try.
* The last entry in the array is always the original url to enable straight-forward webpack.config aliases.
*
* We don't need emulate `dart-sass` "It's not clear which file to import." errors (when "file.ext" and "_file.ext" files are present simultaneously in the same directory).
* This reduces performance and `dart-sass` always do it on own side.
*
* @param {string} url
* @param {boolean} forWebpackResolver
* @param {boolean} fromImport
* @returns {Array<string>}
*/
function getPossibleRequests(
// eslint-disable-next-line no-shadow
url, forWebpackResolver = false, fromImport = false) {
let request = url;
// In case there is module request, send this to webpack resolver
if (forWebpackResolver) {
if (MODULE_REQUEST_REGEX.test(url)) {
request = request.replace(MODULE_REQUEST_REGEX, "");
}
if (IS_MODULE_IMPORT.test(url)) {
request = request[request.length - 1] === "/" ? request : `${request}/`;
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 extension = _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 (extension === ".css") {
return [];
}
const dirname = _path.default.dirname(request);
const normalizedDirname = dirname === "." ? "" : `${dirname}/`;
const basename = _path.default.basename(request);
const basenameWithoutExtension = _path.default.basename(request, extension);
return [...new Set([].concat(fromImport ? [`${normalizedDirname}_${basenameWithoutExtension}.import${extension}`, `${normalizedDirname}${basenameWithoutExtension}.import${extension}`] : []).concat([`${normalizedDirname}_${basename}`, `${normalizedDirname}${basename}`]).concat(forWebpackResolver ? [url] : []))];
}
function promiseResolve(callbackResolve) {
return (context, request) => new Promise((resolve, reject) => {
callbackResolve(context, request, (error, result) => {
if (error) {
reject(error);
} else {
resolve(result);
}
});
});
}
async function startResolving(resolutionMap) {
if (resolutionMap.length === 0) {
return Promise.reject();
}
const [{
possibleRequests
}] = resolutionMap;
if (possibleRequests.length === 0) {
return Promise.reject();
}
const [{
resolve,
context
}] = resolutionMap;
try {
return await resolve(context, possibleRequests[0]);
} catch (_ignoreError) {
const [, ...tailResult] = possibleRequests;
if (tailResult.length === 0) {
const [, ...tailResolutionMap] = resolutionMap;
return startResolving(tailResolutionMap);
}
// eslint-disable-next-line no-param-reassign
resolutionMap[0].possibleRequests = tailResult;
return startResolving(resolutionMap);
}
}
const IS_SPECIAL_MODULE_IMPORT = /^~[^/]+$/;
// `[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.
*
* @throws If a compatible Sass implementation cannot be found.
*/
function getWebpackResolver(resolverFactory, implementation, includePaths = []) {
const isDartSass = implementation && implementation.info.includes("dart-sass");
// We only have one difference with the built-in sass resolution logic and out resolution logic:
// First, we look at the files starting with `_`, then without `_` (i.e. `_name.sass`, `_name.scss`, `_name.css`, `name.sass`, `name.scss`, `name.css`),
// although `sass` look together by extensions (i.e. `_name.sass`/`name.sass`/`_name.scss`/`name.scss`/`_name.css`/`name.css`).
// It shouldn't be a problem because `sass` throw errors:
// - on having `_name.sass` and `name.sass` (extension can be `sass`, `scss` or `css`) in the same directory
// - on having `_name.sass` and `_name.scss` in the same directory
//
// Also `sass` prefer `sass`/`scss` over `css`.
const sassModuleResolve = promiseResolve(resolverFactory({
alias: [],
aliasFields: [],
conditionNames: [],
descriptionFiles: [],
extensions: [".sass", ".scss", ".css"],
exportsFields: [],
mainFields: [],
mainFiles: ["_index", "index"],
modules: [],
restrictions: [/\.((sa|sc|c)ss)$/i],
preferRelative: true
}));
const sassImportResolve = promiseResolve(resolverFactory({
alias: [],
aliasFields: [],
conditionNames: [],
descriptionFiles: [],
extensions: [".sass", ".scss", ".css"],
exportsFields: [],
mainFields: [],
mainFiles: ["_index.import", "_index", "index.import", "index"],
modules: [],
restrictions: [/\.((sa|sc|c)ss)$/i],
preferRelative: true
}));
const webpackModuleResolve = promiseResolve(resolverFactory({
dependencyType: "sass",
conditionNames: ["sass", "style", "..."],
mainFields: ["sass", "style", "main", "..."],
mainFiles: ["_index", "index", "..."],
extensions: [".sass", ".scss", ".css"],
restrictions: [/\.((sa|sc|c)ss)$/i],
preferRelative: true
}));
const webpackImportResolve = promiseResolve(resolverFactory({
dependencyType: "sass",
conditionNames: ["sass", "style", "..."],
mainFields: ["sass", "style", "main", "..."],
mainFiles: ["_index.import", "_index", "index.import", "index", "..."],
extensions: [".sass", ".scss", ".css"],
restrictions: [/\.((sa|sc|c)ss)$/i],
preferRelative: true
}));
return (context, request, fromImport) => {
// See https://github.com/webpack/webpack/issues/12340
// Because `node-sass` calls our importer before `1. Filesystem imports relative to the base file.`
// custom importer may not return `{ file: '/path/to/name.ext' }` and therefore our `context` will be relative
if (!isDartSass && !_path.default.isAbsolute(context)) {
return Promise.reject();
}
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.
//
// `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 (!isDartSass) {
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() {
return {
async canonicalize() {
return null;
},
load() {
// TODO implement
}
};
}
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;
/**
* Verifies that the implementation and version of Sass is supported by this loader.
*
* @param {Object} implementation
* @param {Object} options
* @returns {Function}
*/
function getCompileFn(implementation, options) {
const isNewSass = implementation.info.includes("dart-sass") || implementation.info.includes("sass-embedded");
if (isNewSass) {
if (options.api === "modern") {
return sassOptions => {
const {
data,
...rest
} = sassOptions;
return implementation.compileStringAsync(data, rest);
};
}
return sassOptions => new Promise((resolve, reject) => {
implementation.render(sassOptions, (error, result) => {
if (error) {
reject(error);
return;
}
resolve(result);
});
});
}
if (options.api === "modern") {
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);
}
const obj = new Error(message, {
cause: error
});
obj.stack = null;
return obj;
}