388 lines
13 KiB
JavaScript
388 lines
13 KiB
JavaScript
"use strict";
|
|
|
|
const path = require("path");
|
|
const {
|
|
findModuleById,
|
|
evalModuleCode,
|
|
AUTO_PUBLIC_PATH,
|
|
ABSOLUTE_PUBLIC_PATH,
|
|
BASE_URI,
|
|
SINGLE_DOT_PATH_SEGMENT,
|
|
stringifyRequest,
|
|
stringifyLocal
|
|
} = require("./utils");
|
|
const schema = require("./loader-options.json");
|
|
const MiniCssExtractPlugin = require("./index");
|
|
|
|
/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
|
|
/** @typedef {import("webpack").Compiler} Compiler */
|
|
/** @typedef {import("webpack").Compilation} Compilation */
|
|
/** @typedef {import("webpack").Chunk} Chunk */
|
|
/** @typedef {import("webpack").Module} Module */
|
|
/** @typedef {import("webpack").sources.Source} Source */
|
|
/** @typedef {import("webpack").AssetInfo} AssetInfo */
|
|
/** @typedef {import("webpack").NormalModule} NormalModule */
|
|
/** @typedef {import("./index.js").LoaderOptions} LoaderOptions */
|
|
/** @typedef {{ [key: string]: string | function }} Locals */
|
|
|
|
/** @typedef {any} TODO */
|
|
|
|
/**
|
|
* @typedef {Object} Dependency
|
|
* @property {string} identifier
|
|
* @property {string | null} context
|
|
* @property {Buffer} content
|
|
* @property {string} media
|
|
* @property {string} [supports]
|
|
* @property {string} [layer]
|
|
* @property {Buffer} [sourceMap]
|
|
*/
|
|
|
|
/**
|
|
* @param {string} content
|
|
* @param {{ loaderContext: import("webpack").LoaderContext<LoaderOptions>, options: LoaderOptions, locals: Locals | undefined }} context
|
|
* @returns {string}
|
|
*/
|
|
function hotLoader(content, context) {
|
|
const accept = context.locals ? "" : "module.hot.accept(undefined, cssReload);";
|
|
return `${content}
|
|
if(module.hot) {
|
|
// ${Date.now()}
|
|
var cssReload = require(${stringifyRequest(context.loaderContext, path.join(__dirname, "hmr/hotModuleReplacement.js"))})(module.id, ${JSON.stringify({
|
|
...context.options,
|
|
locals: !!context.locals
|
|
})});
|
|
module.hot.dispose(cssReload);
|
|
${accept}
|
|
}
|
|
`;
|
|
}
|
|
|
|
/**
|
|
* @this {import("webpack").LoaderContext<LoaderOptions>}
|
|
* @param {string} request
|
|
*/
|
|
function pitch(request) {
|
|
if (this._compiler && this._compiler.options && this._compiler.options.experiments && this._compiler.options.experiments.css && this._module && this._module.type === "css") {
|
|
this.emitWarning(new Error('You can\'t use `experiments.css` (`experiments.futureDefaults` enable built-in CSS support by default) and `mini-css-extract-plugin` together, please set `experiments.css` to `false` or set `{ type: "javascript/auto" }` for rules with `mini-css-extract-plugin` in your webpack config (now `mini-css-extract-plugin` does nothing).'));
|
|
return;
|
|
}
|
|
|
|
// @ts-ignore
|
|
const options = this.getOptions( /** @type {Schema} */schema);
|
|
const emit = typeof options.emit !== "undefined" ? options.emit : true;
|
|
const callback = this.async();
|
|
const optionsFromPlugin = /** @type {TODO} */this[MiniCssExtractPlugin.pluginSymbol];
|
|
if (!optionsFromPlugin) {
|
|
callback(new Error("You forgot to add 'mini-css-extract-plugin' plugin (i.e. `{ plugins: [new MiniCssExtractPlugin()] }`), please read https://github.com/webpack-contrib/mini-css-extract-plugin#getting-started"));
|
|
return;
|
|
}
|
|
const {
|
|
webpack
|
|
} = /** @type {Compiler} */this._compiler;
|
|
|
|
/**
|
|
* @param {TODO} originalExports
|
|
* @param {Compilation} [compilation]
|
|
* @param {{ [name: string]: Source }} [assets]
|
|
* @param {Map<string, AssetInfo>} [assetsInfo]
|
|
* @returns {void}
|
|
*/
|
|
const handleExports = (originalExports, compilation, assets, assetsInfo) => {
|
|
/** @type {Locals | undefined} */
|
|
let locals;
|
|
let namedExport;
|
|
const esModule = typeof options.esModule !== "undefined" ? options.esModule : true;
|
|
|
|
/**
|
|
* @param {Dependency[] | [null, object][]} dependencies
|
|
*/
|
|
const addDependencies = dependencies => {
|
|
if (!Array.isArray(dependencies) && dependencies != null) {
|
|
throw new Error(`Exported value was not extracted as an array: ${JSON.stringify(dependencies)}`);
|
|
}
|
|
const identifierCountMap = new Map();
|
|
let lastDep;
|
|
for (const dependency of dependencies) {
|
|
if (! /** @type {Dependency} */dependency.identifier || !emit) {
|
|
// eslint-disable-next-line no-continue
|
|
continue;
|
|
}
|
|
const count = identifierCountMap.get( /** @type {Dependency} */dependency.identifier) || 0;
|
|
const CssDependency = MiniCssExtractPlugin.getCssDependency(webpack);
|
|
|
|
/** @type {NormalModule} */
|
|
this._module.addDependency(lastDep = new CssDependency( /** @type {Dependency} */
|
|
dependency, /** @type {Dependency} */
|
|
dependency.context, count));
|
|
identifierCountMap.set( /** @type {Dependency} */
|
|
dependency.identifier, count + 1);
|
|
}
|
|
if (lastDep && assets) {
|
|
lastDep.assets = assets;
|
|
lastDep.assetsInfo = assetsInfo;
|
|
}
|
|
};
|
|
try {
|
|
// eslint-disable-next-line no-underscore-dangle
|
|
const exports = originalExports.__esModule ? originalExports.default : originalExports;
|
|
namedExport =
|
|
// eslint-disable-next-line no-underscore-dangle
|
|
originalExports.__esModule && (!originalExports.default || !("locals" in originalExports.default));
|
|
if (namedExport) {
|
|
Object.keys(originalExports).forEach(key => {
|
|
if (key !== "default") {
|
|
if (!locals) {
|
|
locals = {};
|
|
}
|
|
|
|
/** @type {Locals} */
|
|
locals[key] = originalExports[key];
|
|
}
|
|
});
|
|
} else {
|
|
locals = exports && exports.locals;
|
|
}
|
|
|
|
/** @type {Dependency[] | [null, object][]} */
|
|
let dependencies;
|
|
if (!Array.isArray(exports)) {
|
|
dependencies = [[null, exports]];
|
|
} else {
|
|
dependencies = exports.map(([id, content, media, sourceMap, supports, layer]) => {
|
|
let identifier = id;
|
|
let context;
|
|
if (compilation) {
|
|
const module = /** @type {Module} */
|
|
findModuleById(compilation, id);
|
|
identifier = module.identifier();
|
|
({
|
|
context
|
|
} = module);
|
|
} else {
|
|
// TODO check if this context is used somewhere
|
|
context = this.rootContext;
|
|
}
|
|
return {
|
|
identifier,
|
|
context,
|
|
content: Buffer.from(content),
|
|
media,
|
|
supports,
|
|
layer,
|
|
sourceMap: sourceMap ? Buffer.from(JSON.stringify(sourceMap)) :
|
|
// eslint-disable-next-line no-undefined
|
|
undefined
|
|
};
|
|
});
|
|
}
|
|
addDependencies(dependencies);
|
|
} catch (e) {
|
|
callback( /** @type {Error} */e);
|
|
return;
|
|
}
|
|
const result = locals ? namedExport ? Object.keys(locals).map(key => `\nexport var ${key} = ${stringifyLocal( /** @type {Locals} */locals[key])};`).join("") : `\n${esModule ? "export default" : "module.exports ="} ${JSON.stringify(locals)};` : esModule ? `\nexport {};` : "";
|
|
let resultSource = `// extracted by ${MiniCssExtractPlugin.pluginName}`;
|
|
|
|
// only attempt hotreloading if the css is actually used for something other than hash values
|
|
resultSource += this.hot && emit ? hotLoader(result, {
|
|
loaderContext: this,
|
|
options,
|
|
locals
|
|
}) : result;
|
|
callback(null, resultSource);
|
|
};
|
|
let {
|
|
publicPath
|
|
} = /** @type {Compilation} */
|
|
this._compilation.outputOptions;
|
|
if (typeof options.publicPath === "string") {
|
|
// eslint-disable-next-line prefer-destructuring
|
|
publicPath = options.publicPath;
|
|
} else if (typeof options.publicPath === "function") {
|
|
publicPath = options.publicPath(this.resourcePath, this.rootContext);
|
|
}
|
|
if (publicPath === "auto") {
|
|
publicPath = AUTO_PUBLIC_PATH;
|
|
}
|
|
if (typeof optionsFromPlugin.experimentalUseImportModule === "undefined" && typeof this.importModule === "function" || optionsFromPlugin.experimentalUseImportModule) {
|
|
if (!this.importModule) {
|
|
callback(new Error("You are using 'experimentalUseImportModule' but 'this.importModule' is not available in loader context. You need to have at least webpack 5.33.2."));
|
|
return;
|
|
}
|
|
let publicPathForExtract;
|
|
if (typeof publicPath === "string") {
|
|
const isAbsolutePublicPath = /^[a-zA-Z][a-zA-Z\d+\-.]*?:/.test(publicPath);
|
|
publicPathForExtract = isAbsolutePublicPath ? publicPath : `${ABSOLUTE_PUBLIC_PATH}${publicPath.replace(/\./g, SINGLE_DOT_PATH_SEGMENT)}`;
|
|
} else {
|
|
publicPathForExtract = publicPath;
|
|
}
|
|
this.importModule(`${this.resourcePath}.webpack[javascript/auto]!=!!!${request}`, {
|
|
layer: options.layer,
|
|
publicPath: /** @type {string} */publicPathForExtract,
|
|
baseUri: `${BASE_URI}/`
|
|
},
|
|
/**
|
|
* @param {Error | null | undefined} error
|
|
* @param {object} exports
|
|
*/
|
|
(error, exports) => {
|
|
if (error) {
|
|
callback(error);
|
|
return;
|
|
}
|
|
handleExports(exports);
|
|
});
|
|
return;
|
|
}
|
|
const loaders = this.loaders.slice(this.loaderIndex + 1);
|
|
this.addDependency(this.resourcePath);
|
|
const childFilename = "*";
|
|
const outputOptions = {
|
|
filename: childFilename,
|
|
publicPath
|
|
};
|
|
const childCompiler = /** @type {Compilation} */
|
|
this._compilation.createChildCompiler(`${MiniCssExtractPlugin.pluginName} ${request}`, outputOptions);
|
|
|
|
// The templates are compiled and executed by NodeJS - similar to server side rendering
|
|
// Unfortunately this causes issues as some loaders require an absolute URL to support ES Modules
|
|
// The following config enables relative URL support for the child compiler
|
|
childCompiler.options.module = {
|
|
...childCompiler.options.module
|
|
};
|
|
childCompiler.options.module.parser = {
|
|
...childCompiler.options.module.parser
|
|
};
|
|
childCompiler.options.module.parser.javascript = {
|
|
...childCompiler.options.module.parser.javascript,
|
|
url: "relative"
|
|
};
|
|
const {
|
|
NodeTemplatePlugin
|
|
} = webpack.node;
|
|
const {
|
|
NodeTargetPlugin
|
|
} = webpack.node;
|
|
new NodeTemplatePlugin(outputOptions).apply(childCompiler);
|
|
new NodeTargetPlugin().apply(childCompiler);
|
|
const {
|
|
EntryOptionPlugin
|
|
} = webpack;
|
|
const {
|
|
library: {
|
|
EnableLibraryPlugin
|
|
}
|
|
} = webpack;
|
|
new EnableLibraryPlugin("commonjs2").apply(childCompiler);
|
|
EntryOptionPlugin.applyEntryOption(childCompiler, this.context, {
|
|
child: {
|
|
library: {
|
|
type: "commonjs2"
|
|
},
|
|
import: [`!!${request}`]
|
|
}
|
|
});
|
|
const {
|
|
LimitChunkCountPlugin
|
|
} = webpack.optimize;
|
|
new LimitChunkCountPlugin({
|
|
maxChunks: 1
|
|
}).apply(childCompiler);
|
|
const {
|
|
NormalModule
|
|
} = webpack;
|
|
childCompiler.hooks.thisCompilation.tap(`${MiniCssExtractPlugin.pluginName} loader`,
|
|
/**
|
|
* @param {Compilation} compilation
|
|
*/
|
|
compilation => {
|
|
const normalModuleHook = NormalModule.getCompilationHooks(compilation).loader;
|
|
normalModuleHook.tap(`${MiniCssExtractPlugin.pluginName} loader`, (loaderContext, module) => {
|
|
if (module.request === request) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
module.loaders = loaders.map(loader => {
|
|
return {
|
|
type: null,
|
|
loader: loader.path,
|
|
options: loader.options,
|
|
ident: loader.ident
|
|
};
|
|
});
|
|
}
|
|
});
|
|
});
|
|
|
|
/** @type {string | Buffer} */
|
|
let source;
|
|
childCompiler.hooks.compilation.tap(MiniCssExtractPlugin.pluginName,
|
|
/**
|
|
* @param {Compilation} compilation
|
|
*/
|
|
compilation => {
|
|
compilation.hooks.processAssets.tap(MiniCssExtractPlugin.pluginName, () => {
|
|
source = compilation.assets[childFilename] && compilation.assets[childFilename].source();
|
|
|
|
// Remove all chunk assets
|
|
compilation.chunks.forEach(chunk => {
|
|
chunk.files.forEach(file => {
|
|
compilation.deleteAsset(file);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
childCompiler.runAsChild((error, entries, compilation) => {
|
|
if (error) {
|
|
callback(error);
|
|
return;
|
|
}
|
|
if ( /** @type {Compilation} */compilation.errors.length > 0) {
|
|
callback( /** @type {Compilation} */compilation.errors[0]);
|
|
return;
|
|
}
|
|
|
|
/** @type {{ [name: string]: Source }} */
|
|
const assets = Object.create(null);
|
|
/** @type {Map<string, AssetInfo>} */
|
|
const assetsInfo = new Map();
|
|
for (const asset of /** @type {Compilation} */compilation.getAssets()) {
|
|
assets[asset.name] = asset.source;
|
|
assetsInfo.set(asset.name, asset.info);
|
|
}
|
|
|
|
/** @type {Compilation} */
|
|
compilation.fileDependencies.forEach(dep => {
|
|
this.addDependency(dep);
|
|
}, this);
|
|
|
|
/** @type {Compilation} */
|
|
compilation.contextDependencies.forEach(dep => {
|
|
this.addContextDependency(dep);
|
|
}, this);
|
|
if (!source) {
|
|
callback(new Error("Didn't get a result from child compiler"));
|
|
return;
|
|
}
|
|
let originalExports;
|
|
try {
|
|
originalExports = evalModuleCode(this, source, request);
|
|
} catch (e) {
|
|
callback( /** @type {Error} */e);
|
|
return;
|
|
}
|
|
handleExports(originalExports, compilation, assets, assetsInfo);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @this {import("webpack").LoaderContext<LoaderOptions>}
|
|
* @param {string} content
|
|
*/
|
|
// eslint-disable-next-line consistent-return
|
|
function loader(content) {
|
|
if (this._compiler && this._compiler.options && this._compiler.options.experiments && this._compiler.options.experiments.css && this._module && this._module.type === "css") {
|
|
return content;
|
|
}
|
|
}
|
|
module.exports = loader;
|
|
module.exports.pitch = pitch; |