1021 lines
36 KiB
JavaScript
1021 lines
36 KiB
JavaScript
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// @ts-check
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// Import types
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/** @typedef {import("./typings").HtmlTagObject} HtmlTagObject */
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/** @typedef {import("./typings").Options} HtmlWebpackOptions */
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/** @typedef {import("./typings").ProcessedOptions} ProcessedHtmlWebpackOptions */
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/** @typedef {import("./typings").TemplateParameter} TemplateParameter */
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/** @typedef {import("webpack/lib/Compiler.js")} WebpackCompiler */
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/** @typedef {import("webpack/lib/Compilation.js")} WebpackCompilation */
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'use strict';
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// use Polyfill for util.promisify in node versions < v8
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const promisify = require('util.promisify');
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const vm = require('vm');
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const fs = require('fs');
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const _ = require('lodash');
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const path = require('path');
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const loaderUtils = require('loader-utils');
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const { createHtmlTagObject, htmlTagObjectToString } = require('./lib/html-tags');
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const childCompiler = require('./lib/compiler.js');
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const prettyError = require('./lib/errors.js');
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const chunkSorter = require('./lib/chunksorter.js');
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const getHtmlWebpackPluginHooks = require('./lib/hooks.js').getHtmlWebpackPluginHooks;
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const fsStatAsync = promisify(fs.stat);
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const fsReadFileAsync = promisify(fs.readFile);
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class HtmlWebpackPlugin {
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/**
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* @param {HtmlWebpackOptions} [options]
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*/
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constructor (options) {
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/** @type {HtmlWebpackOptions} */
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const userOptions = options || {};
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// Default options
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/** @type {ProcessedHtmlWebpackOptions} */
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const defaultOptions = {
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template: 'auto',
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templateContent: false,
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templateParameters: templateParametersGenerator,
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filename: 'index.html',
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hash: false,
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inject: true,
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compile: true,
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favicon: false,
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minify: 'auto',
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cache: true,
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showErrors: true,
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chunks: 'all',
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excludeChunks: [],
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chunksSortMode: 'auto',
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meta: {},
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base: false,
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title: 'Webpack App',
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xhtml: false
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};
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/** @type {ProcessedHtmlWebpackOptions} */
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this.options = Object.assign(defaultOptions, userOptions);
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// Default metaOptions if no template is provided
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if (!userOptions.template && this.options.templateContent === false && this.options.meta) {
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const defaultMeta = {
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// From https://developer.mozilla.org/en-US/docs/Mozilla/Mobile/Viewport_meta_tag
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viewport: 'width=device-width, initial-scale=1'
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};
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this.options.meta = Object.assign({}, this.options.meta, defaultMeta, userOptions.meta);
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}
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// Instance variables to keep caching information
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// for multiple builds
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this.childCompilerHash = undefined;
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/**
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* @type {string | undefined}
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*/
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this.childCompilationOutputName = undefined;
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this.assetJson = undefined;
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this.hash = undefined;
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this.version = HtmlWebpackPlugin.version;
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}
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/**
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* apply is called by the webpack main compiler during the start phase
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* @param {WebpackCompiler} compiler
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*/
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apply (compiler) {
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const self = this;
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let isCompilationCached = false;
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/** @type Promise<string> */
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let compilationPromise;
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this.options.template = this.getFullTemplatePath(this.options.template, compiler.context);
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// convert absolute filename into relative so that webpack can
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// generate it at correct location
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const filename = this.options.filename;
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if (path.resolve(filename) === path.normalize(filename)) {
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this.options.filename = path.relative(compiler.options.output.path, filename);
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}
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// `contenthash` is introduced in webpack v4.3
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// which conflicts with the plugin's existing `contenthash` method,
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// hence it is renamed to `templatehash` to avoid conflicts
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this.options.filename = this.options.filename.replace(/\[(?:(\w+):)?contenthash(?::([a-z]+\d*))?(?::(\d+))?\]/ig, (match) => {
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return match.replace('contenthash', 'templatehash');
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});
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// Check if webpack is running in production mode
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// @see https://github.com/webpack/webpack/blob/3366421f1784c449f415cda5930a8e445086f688/lib/WebpackOptionsDefaulter.js#L12-L14
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const isProductionLikeMode = compiler.options.mode === 'production' || !compiler.options.mode;
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const minify = this.options.minify;
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if (minify === true || (minify === 'auto' && isProductionLikeMode)) {
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/** @type { import('html-minifier').Options } */
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this.options.minify = {
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// https://github.com/kangax/html-minifier#options-quick-reference
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collapseWhitespace: true,
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removeComments: true,
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removeRedundantAttributes: true,
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removeScriptTypeAttributes: true,
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removeStyleLinkTypeAttributes: true,
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useShortDoctype: true
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};
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}
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// Clear the cache once a new HtmlWebpackPlugin is added
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childCompiler.clearCache(compiler);
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// Register all HtmlWebpackPlugins instances at the child compiler
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compiler.hooks.thisCompilation.tap('HtmlWebpackPlugin', (compilation) => {
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// Clear the cache if the child compiler is outdated
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if (childCompiler.hasOutDatedTemplateCache(compilation)) {
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childCompiler.clearCache(compiler);
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}
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// Add this instances template to the child compiler
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childCompiler.addTemplateToCompiler(compiler, this.options.template);
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// Add file dependencies of child compiler to parent compiler
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// to keep them watched even if we get the result from the cache
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compilation.hooks.additionalChunkAssets.tap('HtmlWebpackPlugin', () => {
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const childCompilerDependencies = childCompiler.getFileDependencies(compiler);
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childCompilerDependencies.forEach(fileDependency => {
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compilation.compilationDependencies.add(fileDependency);
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});
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});
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});
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compiler.hooks.make.tapAsync('HtmlWebpackPlugin', (compilation, callback) => {
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// Compile the template (queued)
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compilationPromise = childCompiler.compileTemplate(self.options.template, self.options.filename, compilation)
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.catch(err => {
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compilation.errors.push(prettyError(err, compiler.context).toString());
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return {
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content: self.options.showErrors ? prettyError(err, compiler.context).toJsonHtml() : 'ERROR',
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outputName: self.options.filename,
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hash: ''
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};
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})
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.then(compilationResult => {
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// If the compilation change didnt change the cache is valid
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isCompilationCached = Boolean(compilationResult.hash) && self.childCompilerHash === compilationResult.hash;
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self.childCompilerHash = compilationResult.hash;
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self.childCompilationOutputName = compilationResult.outputName;
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callback();
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return compilationResult.content;
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});
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});
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compiler.hooks.emit.tapAsync('HtmlWebpackPlugin',
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/**
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* Hook into the webpack emit phase
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* @param {WebpackCompilation} compilation
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* @param {() => void} callback
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*/
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(compilation, callback) => {
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// Get all entry point names for this html file
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const entryNames = Array.from(compilation.entrypoints.keys());
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const filteredEntryNames = self.filterChunks(entryNames, self.options.chunks, self.options.excludeChunks);
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const sortedEntryNames = self.sortEntryChunks(filteredEntryNames, this.options.chunksSortMode, compilation);
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const childCompilationOutputName = self.childCompilationOutputName;
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if (childCompilationOutputName === undefined) {
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throw new Error('Did not receive child compilation result');
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}
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// Turn the entry point names into file paths
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const assets = self.htmlWebpackPluginAssets(compilation, childCompilationOutputName, sortedEntryNames);
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// If this is a hot update compilation, move on!
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// This solves a problem where an `index.html` file is generated for hot-update js files
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// It only happens in Webpack 2, where hot updates are emitted separately before the full bundle
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if (self.isHotUpdateCompilation(assets)) {
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return callback();
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}
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// If the template and the assets did not change we don't have to emit the html
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const assetJson = JSON.stringify(self.getAssetFiles(assets));
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if (isCompilationCached && self.options.cache && assetJson === self.assetJson) {
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return callback();
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} else {
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self.assetJson = assetJson;
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}
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// The html-webpack plugin uses a object representation for the html-tags which will be injected
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// to allow altering them more easily
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// Just before they are converted a third-party-plugin author might change the order and content
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const assetsPromise = this.getFaviconPublicPath(this.options.favicon, compilation, assets.publicPath)
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.then((faviconPath) => {
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assets.favicon = faviconPath;
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return getHtmlWebpackPluginHooks(compilation).beforeAssetTagGeneration.promise({
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assets: assets,
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outputName: childCompilationOutputName,
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plugin: self
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});
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});
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// Turn the js and css paths into grouped HtmlTagObjects
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const assetTagGroupsPromise = assetsPromise
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// And allow third-party-plugin authors to reorder and change the assetTags before they are grouped
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.then(({ assets }) => getHtmlWebpackPluginHooks(compilation).alterAssetTags.promise({
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assetTags: {
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scripts: self.generatedScriptTags(assets.js),
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styles: self.generateStyleTags(assets.css),
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meta: [
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...self.generateBaseTag(self.options.base),
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...self.generatedMetaTags(self.options.meta),
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...self.generateFaviconTags(assets.favicon)
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]
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},
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outputName: childCompilationOutputName,
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plugin: self
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}))
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.then(({ assetTags }) => {
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// Inject scripts to body unless it set explictly to head
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const scriptTarget = self.options.inject === 'head' ? 'head' : 'body';
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// Group assets to `head` and `body` tag arrays
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const assetGroups = this.generateAssetGroups(assetTags, scriptTarget);
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// Allow third-party-plugin authors to reorder and change the assetTags once they are grouped
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return getHtmlWebpackPluginHooks(compilation).alterAssetTagGroups.promise({
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headTags: assetGroups.headTags,
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bodyTags: assetGroups.bodyTags,
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outputName: childCompilationOutputName,
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plugin: self
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});
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});
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// Turn the compiled tempalte into a nodejs function or into a nodejs string
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const templateEvaluationPromise = compilationPromise
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.then(compiledTemplate => {
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// Allow to use a custom function / string instead
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if (self.options.templateContent !== false) {
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return self.options.templateContent;
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}
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// Once everything is compiled evaluate the html factory
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// and replace it with its content
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return self.evaluateCompilationResult(compilation, compiledTemplate);
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});
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const templateExectutionPromise = Promise.all([assetsPromise, assetTagGroupsPromise, templateEvaluationPromise])
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// Execute the template
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.then(([assetsHookResult, assetTags, compilationResult]) => typeof compilationResult !== 'function'
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? compilationResult
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: self.executeTemplate(compilationResult, assetsHookResult.assets, { headTags: assetTags.headTags, bodyTags: assetTags.bodyTags }, compilation));
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const injectedHtmlPromise = Promise.all([assetTagGroupsPromise, templateExectutionPromise])
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// Allow plugins to change the html before assets are injected
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.then(([assetTags, html]) => {
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const pluginArgs = { html, headTags: assetTags.headTags, bodyTags: assetTags.bodyTags, plugin: self, outputName: childCompilationOutputName };
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return getHtmlWebpackPluginHooks(compilation).afterTemplateExecution.promise(pluginArgs);
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})
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.then(({ html, headTags, bodyTags }) => {
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return self.postProcessHtml(html, assets, { headTags, bodyTags });
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});
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const emitHtmlPromise = injectedHtmlPromise
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// Allow plugins to change the html after assets are injected
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.then((html) => {
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const pluginArgs = { html, plugin: self, outputName: childCompilationOutputName };
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return getHtmlWebpackPluginHooks(compilation).beforeEmit.promise(pluginArgs)
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.then(result => result.html);
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})
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.catch(err => {
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// In case anything went wrong the promise is resolved
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// with the error message and an error is logged
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compilation.errors.push(prettyError(err, compiler.context).toString());
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// Prevent caching
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self.hash = null;
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return self.options.showErrors ? prettyError(err, compiler.context).toHtml() : 'ERROR';
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})
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.then(html => {
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// Allow to use [templatehash] as placeholder for the html-webpack-plugin name
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// See also https://survivejs.com/webpack/optimizing/adding-hashes-to-filenames/
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// From https://github.com/webpack-contrib/extract-text-webpack-plugin/blob/8de6558e33487e7606e7cd7cb2adc2cccafef272/src/index.js#L212-L214
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const finalOutputName = childCompilationOutputName.replace(/\[(?:(\w+):)?templatehash(?::([a-z]+\d*))?(?::(\d+))?\]/ig, (_, hashType, digestType, maxLength) => {
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return loaderUtils.getHashDigest(Buffer.from(html, 'utf8'), hashType, digestType, parseInt(maxLength, 10));
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});
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// Add the evaluated html code to the webpack assets
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compilation.assets[finalOutputName] = {
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source: () => html,
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size: () => html.length
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};
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return finalOutputName;
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})
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.then((finalOutputName) => getHtmlWebpackPluginHooks(compilation).afterEmit.promise({
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outputName: finalOutputName,
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plugin: self
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}).catch(err => {
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console.error(err);
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return null;
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}).then(() => null));
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// Once all files are added to the webpack compilation
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// let the webpack compiler continue
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emitHtmlPromise.then(() => {
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callback();
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});
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});
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}
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/**
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* Evaluates the child compilation result
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* @param {WebpackCompilation} compilation
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* @param {string} source
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* @returns {Promise<string | (() => string | Promise<string>)>}
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*/
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evaluateCompilationResult (compilation, source) {
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if (!source) {
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return Promise.reject(new Error('The child compilation didn\'t provide a result'));
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}
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// The LibraryTemplatePlugin stores the template result in a local variable.
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// To extract the result during the evaluation this part has to be removed.
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source = source.replace('var HTML_WEBPACK_PLUGIN_RESULT =', '');
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const template = this.options.template.replace(/^.+!/, '').replace(/\?.+$/, '');
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const vmContext = vm.createContext(_.extend({ HTML_WEBPACK_PLUGIN: true, require: require }, global));
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const vmScript = new vm.Script(source, { filename: template });
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// Evaluate code and cast to string
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let newSource;
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try {
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newSource = vmScript.runInContext(vmContext);
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} catch (e) {
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return Promise.reject(e);
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}
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if (typeof newSource === 'object' && newSource.__esModule && newSource.default) {
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newSource = newSource.default;
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}
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||
|
|
return typeof newSource === 'string' || typeof newSource === 'function'
|
||
|
|
? Promise.resolve(newSource)
|
||
|
|
: Promise.reject(new Error('The loader "' + this.options.template + '" didn\'t return html.'));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate the template parameters for the template function
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
* @param {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}} assets
|
||
|
|
* @param {{
|
||
|
|
headTags: HtmlTagObject[],
|
||
|
|
bodyTags: HtmlTagObject[]
|
||
|
|
}} assetTags
|
||
|
|
* @returns {Promise<{[key: any]: any}>}
|
||
|
|
*/
|
||
|
|
getTemplateParameters (compilation, assets, assetTags) {
|
||
|
|
const templateParameters = this.options.templateParameters;
|
||
|
|
if (templateParameters === false) {
|
||
|
|
return Promise.resolve({});
|
||
|
|
}
|
||
|
|
if (typeof templateParameters === 'function') {
|
||
|
|
const preparedAssetTags = {
|
||
|
|
headTags: this.prepareAssetTagGroupForRendering(assetTags.headTags),
|
||
|
|
bodyTags: this.prepareAssetTagGroupForRendering(assetTags.bodyTags)
|
||
|
|
};
|
||
|
|
return Promise
|
||
|
|
.resolve()
|
||
|
|
.then(() => templateParameters(compilation, assets, preparedAssetTags, this.options));
|
||
|
|
}
|
||
|
|
if (typeof templateParameters === 'object') {
|
||
|
|
return Promise.resolve(templateParameters);
|
||
|
|
}
|
||
|
|
throw new Error('templateParameters has to be either a function or an object');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This function renders the actual html by executing the template function
|
||
|
|
*
|
||
|
|
* @param {(templateParameters) => string | Promise<string>} templateFunction
|
||
|
|
* @param {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}} assets
|
||
|
|
* @param {{
|
||
|
|
headTags: HtmlTagObject[],
|
||
|
|
bodyTags: HtmlTagObject[]
|
||
|
|
}} assetTags
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
*
|
||
|
|
* @returns Promise<string>
|
||
|
|
*/
|
||
|
|
executeTemplate (templateFunction, assets, assetTags, compilation) {
|
||
|
|
// Template processing
|
||
|
|
const templateParamsPromise = this.getTemplateParameters(compilation, assets, assetTags);
|
||
|
|
return templateParamsPromise.then((templateParams) => {
|
||
|
|
try {
|
||
|
|
// If html is a promise return the promise
|
||
|
|
// If html is a string turn it into a promise
|
||
|
|
return templateFunction(templateParams);
|
||
|
|
} catch (e) {
|
||
|
|
compilation.errors.push(new Error('Template execution failed: ' + e));
|
||
|
|
return Promise.reject(e);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Html Post processing
|
||
|
|
*
|
||
|
|
* @param {any} html
|
||
|
|
* The input html
|
||
|
|
* @param {any} assets
|
||
|
|
* @param {{
|
||
|
|
headTags: HtmlTagObject[],
|
||
|
|
bodyTags: HtmlTagObject[]
|
||
|
|
}} assetTags
|
||
|
|
* The asset tags to inject
|
||
|
|
*
|
||
|
|
* @returns {Promise<string>}
|
||
|
|
*/
|
||
|
|
postProcessHtml (html, assets, assetTags) {
|
||
|
|
if (typeof html !== 'string') {
|
||
|
|
return Promise.reject(new Error('Expected html to be a string but got ' + JSON.stringify(html)));
|
||
|
|
}
|
||
|
|
const htmlAfterInjection = this.options.inject
|
||
|
|
? this.injectAssetsIntoHtml(html, assets, assetTags)
|
||
|
|
: html;
|
||
|
|
const htmlAfterMinification = typeof this.options.minify === 'object'
|
||
|
|
? require('html-minifier-terser').minify(htmlAfterInjection, this.options.minify)
|
||
|
|
: htmlAfterInjection;
|
||
|
|
return Promise.resolve(htmlAfterMinification);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Pushes the content of the given filename to the compilation assets
|
||
|
|
* @param {string} filename
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
*
|
||
|
|
* @returns {string} file basename
|
||
|
|
*/
|
||
|
|
addFileToAssets (filename, compilation) {
|
||
|
|
filename = path.resolve(compilation.compiler.context, filename);
|
||
|
|
return Promise.all([
|
||
|
|
fsStatAsync(filename),
|
||
|
|
fsReadFileAsync(filename)
|
||
|
|
])
|
||
|
|
.then(([size, source]) => {
|
||
|
|
return {
|
||
|
|
size,
|
||
|
|
source
|
||
|
|
};
|
||
|
|
})
|
||
|
|
.catch(() => Promise.reject(new Error('HtmlWebpackPlugin: could not load file ' + filename)))
|
||
|
|
.then(results => {
|
||
|
|
const basename = path.basename(filename);
|
||
|
|
compilation.fileDependencies.add(filename);
|
||
|
|
compilation.assets[basename] = {
|
||
|
|
source: () => results.source,
|
||
|
|
size: () => results.size.size
|
||
|
|
};
|
||
|
|
return basename;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper to sort chunks
|
||
|
|
* @param {string[]} entryNames
|
||
|
|
* @param {string|((entryNameA: string, entryNameB: string) => number)} sortMode
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
*/
|
||
|
|
sortEntryChunks (entryNames, sortMode, compilation) {
|
||
|
|
// Custom function
|
||
|
|
if (typeof sortMode === 'function') {
|
||
|
|
return entryNames.sort(sortMode);
|
||
|
|
}
|
||
|
|
// Check if the given sort mode is a valid chunkSorter sort mode
|
||
|
|
if (typeof chunkSorter[sortMode] !== 'undefined') {
|
||
|
|
return chunkSorter[sortMode](entryNames, compilation, this.options);
|
||
|
|
}
|
||
|
|
throw new Error('"' + sortMode + '" is not a valid chunk sort mode');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return all chunks from the compilation result which match the exclude and include filters
|
||
|
|
* @param {any} chunks
|
||
|
|
* @param {string[]|'all'} includedChunks
|
||
|
|
* @param {string[]} excludedChunks
|
||
|
|
*/
|
||
|
|
filterChunks (chunks, includedChunks, excludedChunks) {
|
||
|
|
return chunks.filter(chunkName => {
|
||
|
|
// Skip if the chunks should be filtered and the given chunk was not added explicity
|
||
|
|
if (Array.isArray(includedChunks) && includedChunks.indexOf(chunkName) === -1) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// Skip if the chunks should be filtered and the given chunk was excluded explicity
|
||
|
|
if (Array.isArray(excludedChunks) && excludedChunks.indexOf(chunkName) !== -1) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// Add otherwise
|
||
|
|
return true;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the given asset object consists only of hot-update.js files
|
||
|
|
*
|
||
|
|
* @param {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}} assets
|
||
|
|
*/
|
||
|
|
isHotUpdateCompilation (assets) {
|
||
|
|
return assets.js.length && assets.js.every((assetPath) => /\.hot-update\.js$/.test(assetPath));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The htmlWebpackPluginAssets extracts the asset information of a webpack compilation
|
||
|
|
* for all given entry names
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
* @param {string[]} entryNames
|
||
|
|
* @returns {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}}
|
||
|
|
*/
|
||
|
|
htmlWebpackPluginAssets (compilation, childCompilationOutputName, entryNames) {
|
||
|
|
const compilationHash = compilation.hash;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @type {string} the configured public path to the asset root
|
||
|
|
* if a path publicPath is set in the current webpack config use it otherwise
|
||
|
|
* fallback to a realtive path
|
||
|
|
*/
|
||
|
|
const webpackPublicPath = compilation.mainTemplate.getPublicPath({ hash: compilationHash });
|
||
|
|
const isPublicPathDefined = webpackPublicPath.trim() !== '';
|
||
|
|
let publicPath = isPublicPathDefined
|
||
|
|
// If a hard coded public path exists use it
|
||
|
|
? webpackPublicPath
|
||
|
|
// If no public path was set get a relative url path
|
||
|
|
: path.relative(path.resolve(compilation.options.output.path, path.dirname(childCompilationOutputName)), compilation.options.output.path)
|
||
|
|
.split(path.sep).join('/');
|
||
|
|
|
||
|
|
if (publicPath.length && publicPath.substr(-1, 1) !== '/') {
|
||
|
|
publicPath += '/';
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @type {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}}
|
||
|
|
*/
|
||
|
|
const assets = {
|
||
|
|
// The public path
|
||
|
|
publicPath: publicPath,
|
||
|
|
// Will contain all js and mjs files
|
||
|
|
js: [],
|
||
|
|
// Will contain all css files
|
||
|
|
css: [],
|
||
|
|
// Will contain the html5 appcache manifest files if it exists
|
||
|
|
manifest: Object.keys(compilation.assets).find(assetFile => path.extname(assetFile) === '.appcache'),
|
||
|
|
// Favicon
|
||
|
|
favicon: undefined
|
||
|
|
};
|
||
|
|
|
||
|
|
// Append a hash for cache busting
|
||
|
|
if (this.options.hash && assets.manifest) {
|
||
|
|
assets.manifest = this.appendHash(assets.manifest, compilationHash);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Extract paths to .js, .mjs and .css files from the current compilation
|
||
|
|
const entryPointPublicPathMap = {};
|
||
|
|
const extensionRegexp = /\.(css|js|mjs)(\?|$)/;
|
||
|
|
for (let i = 0; i < entryNames.length; i++) {
|
||
|
|
const entryName = entryNames[i];
|
||
|
|
const entryPointFiles = compilation.entrypoints.get(entryName).getFiles();
|
||
|
|
// Prepend the publicPath and append the hash depending on the
|
||
|
|
// webpack.output.publicPath and hashOptions
|
||
|
|
// E.g. bundle.js -> /bundle.js?hash
|
||
|
|
const entryPointPublicPaths = entryPointFiles
|
||
|
|
.map(chunkFile => {
|
||
|
|
const entryPointPublicPath = publicPath + this.urlencodePath(chunkFile);
|
||
|
|
return this.options.hash
|
||
|
|
? this.appendHash(entryPointPublicPath, compilationHash)
|
||
|
|
: entryPointPublicPath;
|
||
|
|
});
|
||
|
|
|
||
|
|
entryPointPublicPaths.forEach((entryPointPublicPath) => {
|
||
|
|
const extMatch = extensionRegexp.exec(entryPointPublicPath);
|
||
|
|
// Skip if the public path is not a .css, .mjs or .js file
|
||
|
|
if (!extMatch) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// Skip if this file is already known
|
||
|
|
// (e.g. because of common chunk optimizations)
|
||
|
|
if (entryPointPublicPathMap[entryPointPublicPath]) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
entryPointPublicPathMap[entryPointPublicPath] = true;
|
||
|
|
// ext will contain .js or .css, because .mjs recognizes as .js
|
||
|
|
const ext = extMatch[1] === 'mjs' ? 'js' : extMatch[1];
|
||
|
|
assets[ext].push(entryPointPublicPath);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
return assets;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a favicon file from disk to a webpack ressource
|
||
|
|
* and returns the url to the ressource
|
||
|
|
*
|
||
|
|
* @param {string|false} faviconFilePath
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
* @param {string} publicPath
|
||
|
|
* @returns {Promise<string|undefined>}
|
||
|
|
*/
|
||
|
|
getFaviconPublicPath (faviconFilePath, compilation, publicPath) {
|
||
|
|
if (!faviconFilePath) {
|
||
|
|
return Promise.resolve(undefined);
|
||
|
|
}
|
||
|
|
return this.addFileToAssets(faviconFilePath, compilation)
|
||
|
|
.then((faviconName) => {
|
||
|
|
const faviconPath = publicPath + faviconName;
|
||
|
|
if (this.options.hash) {
|
||
|
|
return this.appendHash(faviconPath, compilation.hash);
|
||
|
|
}
|
||
|
|
return faviconPath;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate meta tags
|
||
|
|
* @returns {HtmlTagObject[]}
|
||
|
|
*/
|
||
|
|
getMetaTags () {
|
||
|
|
const metaOptions = this.options.meta;
|
||
|
|
if (metaOptions === false) {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
// Make tags self-closing in case of xhtml
|
||
|
|
// Turn { "viewport" : "width=500, initial-scale=1" } into
|
||
|
|
// [{ name:"viewport" content:"width=500, initial-scale=1" }]
|
||
|
|
const metaTagAttributeObjects = Object.keys(metaOptions)
|
||
|
|
.map((metaName) => {
|
||
|
|
const metaTagContent = metaOptions[metaName];
|
||
|
|
return (typeof metaTagContent === 'string') ? {
|
||
|
|
name: metaName,
|
||
|
|
content: metaTagContent
|
||
|
|
} : metaTagContent;
|
||
|
|
})
|
||
|
|
.filter((attribute) => attribute !== false);
|
||
|
|
// Turn [{ name:"viewport" content:"width=500, initial-scale=1" }] into
|
||
|
|
// the html-webpack-plugin tag structure
|
||
|
|
return metaTagAttributeObjects.map((metaTagAttributes) => {
|
||
|
|
if (metaTagAttributes === false) {
|
||
|
|
throw new Error('Invalid meta tag');
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
tagName: 'meta',
|
||
|
|
voidTag: true,
|
||
|
|
attributes: metaTagAttributes
|
||
|
|
};
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate all tags script for the given file paths
|
||
|
|
* @param {Array<string>} jsAssets
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
generatedScriptTags (jsAssets) {
|
||
|
|
return jsAssets.map(scriptAsset => ({
|
||
|
|
tagName: 'script',
|
||
|
|
voidTag: false,
|
||
|
|
attributes: {
|
||
|
|
src: scriptAsset
|
||
|
|
}
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate all style tags for the given file paths
|
||
|
|
* @param {Array<string>} cssAssets
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
generateStyleTags (cssAssets) {
|
||
|
|
return cssAssets.map(styleAsset => ({
|
||
|
|
tagName: 'link',
|
||
|
|
voidTag: true,
|
||
|
|
attributes: {
|
||
|
|
href: styleAsset,
|
||
|
|
rel: 'stylesheet'
|
||
|
|
}
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate an optional base tag
|
||
|
|
* @param { false
|
||
|
|
| string
|
||
|
|
| {[attributeName: string]: string} // attributes e.g. { href:"http://example.com/page.html" target:"_blank" }
|
||
|
|
} baseOption
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
generateBaseTag (baseOption) {
|
||
|
|
if (baseOption === false) {
|
||
|
|
return [];
|
||
|
|
} else {
|
||
|
|
return [{
|
||
|
|
tagName: 'base',
|
||
|
|
voidTag: true,
|
||
|
|
attributes: (typeof baseOption === 'string') ? {
|
||
|
|
href: baseOption
|
||
|
|
} : baseOption
|
||
|
|
}];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate all meta tags for the given meta configuration
|
||
|
|
* @param {false | {
|
||
|
|
[name: string]:
|
||
|
|
false // disabled
|
||
|
|
| string // name content pair e.g. {viewport: 'width=device-width, initial-scale=1, shrink-to-fit=no'}`
|
||
|
|
| {[attributeName: string]: string|boolean} // custom properties e.g. { name:"viewport" content:"width=500, initial-scale=1" }
|
||
|
|
}} metaOptions
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
generatedMetaTags (metaOptions) {
|
||
|
|
if (metaOptions === false) {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
// Make tags self-closing in case of xhtml
|
||
|
|
// Turn { "viewport" : "width=500, initial-scale=1" } into
|
||
|
|
// [{ name:"viewport" content:"width=500, initial-scale=1" }]
|
||
|
|
const metaTagAttributeObjects = Object.keys(metaOptions)
|
||
|
|
.map((metaName) => {
|
||
|
|
const metaTagContent = metaOptions[metaName];
|
||
|
|
return (typeof metaTagContent === 'string') ? {
|
||
|
|
name: metaName,
|
||
|
|
content: metaTagContent
|
||
|
|
} : metaTagContent;
|
||
|
|
})
|
||
|
|
.filter((attribute) => attribute !== false);
|
||
|
|
// Turn [{ name:"viewport" content:"width=500, initial-scale=1" }] into
|
||
|
|
// the html-webpack-plugin tag structure
|
||
|
|
return metaTagAttributeObjects.map((metaTagAttributes) => {
|
||
|
|
if (metaTagAttributes === false) {
|
||
|
|
throw new Error('Invalid meta tag');
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
tagName: 'meta',
|
||
|
|
voidTag: true,
|
||
|
|
attributes: metaTagAttributes
|
||
|
|
};
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate a favicon tag for the given file path
|
||
|
|
* @param {string| undefined} faviconPath
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
generateFaviconTags (faviconPath) {
|
||
|
|
if (!faviconPath) {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
return [{
|
||
|
|
tagName: 'link',
|
||
|
|
voidTag: true,
|
||
|
|
attributes: {
|
||
|
|
rel: 'shortcut icon',
|
||
|
|
href: faviconPath
|
||
|
|
}
|
||
|
|
}];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Group assets to head and bottom tags
|
||
|
|
*
|
||
|
|
* @param {{
|
||
|
|
scripts: Array<HtmlTagObject>;
|
||
|
|
styles: Array<HtmlTagObject>;
|
||
|
|
meta: Array<HtmlTagObject>;
|
||
|
|
}} assetTags
|
||
|
|
* @param {"body" | "head"} scriptTarget
|
||
|
|
* @returns {{
|
||
|
|
headTags: Array<HtmlTagObject>;
|
||
|
|
bodyTags: Array<HtmlTagObject>;
|
||
|
|
}}
|
||
|
|
*/
|
||
|
|
generateAssetGroups (assetTags, scriptTarget) {
|
||
|
|
/** @type {{ headTags: Array<HtmlTagObject>; bodyTags: Array<HtmlTagObject>; }} */
|
||
|
|
const result = {
|
||
|
|
headTags: [
|
||
|
|
...assetTags.meta,
|
||
|
|
...assetTags.styles
|
||
|
|
],
|
||
|
|
bodyTags: []
|
||
|
|
};
|
||
|
|
// Add script tags to head or body depending on
|
||
|
|
// the htmlPluginOptions
|
||
|
|
if (scriptTarget === 'body') {
|
||
|
|
result.bodyTags.push(...assetTags.scripts);
|
||
|
|
} else {
|
||
|
|
result.headTags.push(...assetTags.scripts);
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add toString methods for easier rendering
|
||
|
|
* inside the template
|
||
|
|
*
|
||
|
|
* @param {Array<HtmlTagObject>} assetTagGroup
|
||
|
|
* @returns {Array<HtmlTagObject>}
|
||
|
|
*/
|
||
|
|
prepareAssetTagGroupForRendering (assetTagGroup) {
|
||
|
|
const xhtml = this.options.xhtml;
|
||
|
|
const preparedTags = assetTagGroup.map((assetTag) => {
|
||
|
|
const copiedAssetTag = Object.assign({}, assetTag);
|
||
|
|
copiedAssetTag.toString = function () {
|
||
|
|
return htmlTagObjectToString(this, xhtml);
|
||
|
|
};
|
||
|
|
return copiedAssetTag;
|
||
|
|
});
|
||
|
|
preparedTags.toString = function () {
|
||
|
|
return this.join('');
|
||
|
|
};
|
||
|
|
return preparedTags;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Injects the assets into the given html string
|
||
|
|
*
|
||
|
|
* @param {string} html
|
||
|
|
* The input html
|
||
|
|
* @param {any} assets
|
||
|
|
* @param {{
|
||
|
|
headTags: HtmlTagObject[],
|
||
|
|
bodyTags: HtmlTagObject[]
|
||
|
|
}} assetTags
|
||
|
|
* The asset tags to inject
|
||
|
|
*
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
injectAssetsIntoHtml (html, assets, assetTags) {
|
||
|
|
const htmlRegExp = /(<html[^>]*>)/i;
|
||
|
|
const headRegExp = /(<\/head\s*>)/i;
|
||
|
|
const bodyRegExp = /(<\/body\s*>)/i;
|
||
|
|
const body = assetTags.bodyTags.map((assetTagObject) => htmlTagObjectToString(assetTagObject, this.options.xhtml));
|
||
|
|
const head = assetTags.headTags.map((assetTagObject) => htmlTagObjectToString(assetTagObject, this.options.xhtml));
|
||
|
|
|
||
|
|
if (body.length) {
|
||
|
|
if (bodyRegExp.test(html)) {
|
||
|
|
// Append assets to body element
|
||
|
|
html = html.replace(bodyRegExp, match => body.join('') + match);
|
||
|
|
} else {
|
||
|
|
// Append scripts to the end of the file if no <body> element exists:
|
||
|
|
html += body.join('');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (head.length) {
|
||
|
|
// Create a head tag if none exists
|
||
|
|
if (!headRegExp.test(html)) {
|
||
|
|
if (!htmlRegExp.test(html)) {
|
||
|
|
html = '<head></head>' + html;
|
||
|
|
} else {
|
||
|
|
html = html.replace(htmlRegExp, match => match + '<head></head>');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Append assets to head element
|
||
|
|
html = html.replace(headRegExp, match => head.join('') + match);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Inject manifest into the opening html tag
|
||
|
|
if (assets.manifest) {
|
||
|
|
html = html.replace(/(<html[^>]*)(>)/i, (match, start, end) => {
|
||
|
|
// Append the manifest only if no manifest was specified
|
||
|
|
if (/\smanifest\s*=/.test(match)) {
|
||
|
|
return match;
|
||
|
|
}
|
||
|
|
return start + ' manifest="' + assets.manifest + '"' + end;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
return html;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a cache busting hash to the query string of the url
|
||
|
|
* E.g. http://localhost:8080/ -> http://localhost:8080/?50c9096ba6183fd728eeb065a26ec175
|
||
|
|
* @param {string} url
|
||
|
|
* @param {string} hash
|
||
|
|
*/
|
||
|
|
appendHash (url, hash) {
|
||
|
|
if (!url) {
|
||
|
|
return url;
|
||
|
|
}
|
||
|
|
return url + (url.indexOf('?') === -1 ? '?' : '&') + hash;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encode each path component using `encodeURIComponent` as files can contain characters
|
||
|
|
* which needs special encoding in URLs like `+ `.
|
||
|
|
*
|
||
|
|
* @param {string} filePath
|
||
|
|
*/
|
||
|
|
urlencodePath (filePath) {
|
||
|
|
return filePath.split('/').map(encodeURIComponent).join('/');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper to return the absolute template path with a fallback loader
|
||
|
|
* @param {string} template
|
||
|
|
* The path to the template e.g. './index.html'
|
||
|
|
* @param {string} context
|
||
|
|
* The webpack base resolution path for relative paths e.g. process.cwd()
|
||
|
|
*/
|
||
|
|
getFullTemplatePath (template, context) {
|
||
|
|
if (template === 'auto') {
|
||
|
|
template = path.resolve(context, 'src/index.ejs');
|
||
|
|
if (!fs.existsSync(template)) {
|
||
|
|
template = path.join(__dirname, 'default_index.ejs');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// If the template doesn't use a loader use the lodash template loader
|
||
|
|
if (template.indexOf('!') === -1) {
|
||
|
|
template = require.resolve('./lib/loader.js') + '!' + path.resolve(context, template);
|
||
|
|
}
|
||
|
|
// Resolve template path
|
||
|
|
return template.replace(
|
||
|
|
/([!])([^/\\][^!?]+|[^/\\!?])($|\?[^!?\n]+$)/,
|
||
|
|
(match, prefix, filepath, postfix) => prefix + path.resolve(filepath) + postfix);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper to return a sorted unique array of all asset files out of the
|
||
|
|
* asset object
|
||
|
|
*/
|
||
|
|
getAssetFiles (assets) {
|
||
|
|
const files = _.uniq(Object.keys(assets).filter(assetType => assetType !== 'chunks' && assets[assetType]).reduce((files, assetType) => files.concat(assets[assetType]), []));
|
||
|
|
files.sort();
|
||
|
|
return files;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The default for options.templateParameter
|
||
|
|
* Generate the template parameters
|
||
|
|
*
|
||
|
|
* Generate the template parameters for the template function
|
||
|
|
* @param {WebpackCompilation} compilation
|
||
|
|
* @param {{
|
||
|
|
publicPath: string,
|
||
|
|
js: Array<string>,
|
||
|
|
css: Array<string>,
|
||
|
|
manifest?: string,
|
||
|
|
favicon?: string
|
||
|
|
}} assets
|
||
|
|
* @param {{
|
||
|
|
headTags: HtmlTagObject[],
|
||
|
|
bodyTags: HtmlTagObject[]
|
||
|
|
}} assetTags
|
||
|
|
* @param {ProcessedHtmlWebpackOptions} options
|
||
|
|
* @returns {TemplateParameter}
|
||
|
|
*/
|
||
|
|
function templateParametersGenerator (compilation, assets, assetTags, options) {
|
||
|
|
return {
|
||
|
|
compilation: compilation,
|
||
|
|
webpackConfig: compilation.options,
|
||
|
|
htmlWebpackPlugin: {
|
||
|
|
tags: assetTags,
|
||
|
|
files: assets,
|
||
|
|
options: options
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
// Statics:
|
||
|
|
/**
|
||
|
|
* The major version number of this plugin
|
||
|
|
*/
|
||
|
|
HtmlWebpackPlugin.version = 4;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A static helper to get the hooks for this plugin
|
||
|
|
*
|
||
|
|
* Usage: HtmlWebpackPlugin.getHooks(compilation).HOOK_NAME.tapAsync('YourPluginName', () => { ... });
|
||
|
|
*/
|
||
|
|
HtmlWebpackPlugin.getHooks = getHtmlWebpackPluginHooks;
|
||
|
|
HtmlWebpackPlugin.createHtmlTagObject = createHtmlTagObject;
|
||
|
|
|
||
|
|
module.exports = HtmlWebpackPlugin;
|