Chore: Updating html-webpack-plugin to v4 (#1608)

.changeset/rude-walls-dress.md

@@ -0,0 +1,6 @@
+---
+'preact-cli': minor
+'@preact/prerender-data-provider': patch
+---
+
+Updates to use html-webpack-plugin v4

packages/cli/lib/lib/webpack/render-html-plugin.js

@@ -1,7 +1,9 @@
 const { resolve, join } = require('path');
 const os = require('os');
 const { existsSync, readFileSync, writeFileSync, mkdirSync } = require('fs');
-const HtmlWebpackExcludeAssetsPlugin = require('html-webpack-exclude-assets-plugin');
+const {
+	HtmlWebpackSkipAssetsPlugin,
+} = require('html-webpack-skip-assets-plugin');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const prerender = require('./prerender');
 const createLoadManifest = require('./create-load-manifest');
@@ -16,8 +18,8 @@ function read(path) {
 	return readFileSync(resolve(__dirname, path), 'utf-8');
 }
 
-module.exports = async function (config) {
-	const { cwd, dest, isProd, src } = config;
+module.exports = async function renderHTMLPlugin(config) {
+	const { cwd, dest, src } = config;
 	const inProjectTemplatePath = resolve(src, 'template.html');
 	let template = defaultTemplate;
 	if (existsSync(inProjectTemplatePath)) {
@@ -33,14 +35,11 @@ module.exports = async function (config) {
 	}
 
 	let content = read(template);
-	if (/preact\.headEnd|preact\.bodyEnd/.test(content)) {
+	if (/preact\.(title|headEnd|bodyEnd)/.test(content)) {
 		const headEnd = read('../../resources/head-end.ejs');
 		const bodyEnd = read('../../resources/body-end.ejs');
 		content = content
-			.replace(
-				/<%[=]?\s+preact\.title\s+%>/,
-				'<%= htmlWebpackPlugin.options.title %>'
-			)
+			.replace(/<%[=]?\s+preact\.title\s+%>/, '<%= cli.title %>')
 			.replace(/<%\s+preact\.headEnd\s+%>/, headEnd)
 			.replace(/<%\s+preact\.bodyEnd\s+%>/, bodyEnd);
 
@@ -55,53 +54,70 @@ module.exports = async function (config) {
 	}
 
 	const htmlWebpackConfig = values => {
-		const { url, title, ...routeData } = values;
+		let { url, title, ...routeData } = values;
+
+		title =
+			title ||
+			config.title ||
+			config.manifest.name ||
+			config.manifest.short_name ||
+			(config.pkg.name || '').replace(/^@[a-z]\//, '') ||
+			'Preact App';
+
 		// Do not create a folder if the url is for a specific file.
 		const filename = url.endsWith('.html')
 			? resolve(dest, url.substring(1))
 			: resolve(dest, url.substring(1), 'index.html');
-		return Object.assign(values, {
+
+		return {
+			title,
 			filename,
 			template: `!!${require.resolve('ejs-loader')}?esModule=false!${template}`,
-			minify: isProd && {
-				collapseWhitespace: true,
-				removeScriptTypeAttributes: true,
-				removeRedundantAttributes: true,
-				removeStyleLinkTypeAttributes: true,
-				removeComments: true,
+			templateParameters: (compilation, assets, assetTags, options) => {
+				let entrypoints = {};
+				compilation.entrypoints.forEach((entrypoint, name) => {
+					let entryFiles = entrypoint.getFiles();
+					entrypoints[name] =
+						assets.publicPath +
+						entryFiles.find(file => /\.(m?js)(\?|$)/.test(file));
+				});
+
+				let loadManifest = compilation.assets['push-manifest.json']
+					? JSON.parse(compilation.assets['push-manifest.json'].source())
+					: createLoadManifest(
+							compilation.assets,
+							config.esm,
+							compilation.namedChunkGroups
+					  );
+
+				return {
+					cli: {
+						title,
+						url,
+						manifest: config.manifest,
+						inlineCss: config['inline-css'],
+						preload: config.preload,
+						config,
+						preRenderData: values,
+						CLI_DATA: { preRenderData: { url, ...routeData } },
+						ssr: config.prerender ? prerender({ cwd, dest, src }, values) : '',
+						loadManifest,
+						entrypoints,
+					},
+					htmlWebpackPlugin: {
+						tags: assetTags,
+						files: assets,
+						options,
+					},
+				};
 			},
+			inject: true,
+			scriptLoading: 'defer',
 			favicon: existsSync(resolve(src, 'assets/favicon.ico'))
 				? 'assets/favicon.ico'
 				: '',
-			inject: true,
-			compile: true,
-			inlineCss: config['inline-css'],
-			preload: config.preload,
-			manifest: config.manifest,
-			title:
-				title ||
-				config.title ||
-				config.manifest.name ||
-				config.manifest.short_name ||
-				(config.pkg.name || '').replace(/^@[a-z]\//, '') ||
-				'Preact App',
 			excludeAssets: [/(bundle|polyfills)(\..*)?\.js$/],
-			createLoadManifest: (assets, namedChunkGroups) => {
-				if (assets['push-manifest.json']) {
-					return JSON.parse(assets['push-manifest.json'].source());
-				}
-				return createLoadManifest(assets, config.esm, namedChunkGroups);
-			},
-			config,
-			url,
-			ssr() {
-				return config.prerender && url !== PREACT_FALLBACK_URL
-					? prerender({ cwd, dest, src }, values)
-					: '';
-			},
-			scriptLoading: 'defer',
-			CLI_DATA: { preRenderData: { url, ...routeData } },
-		});
+		};
 	};
 
 	let pages = [{ url: '/' }];
@@ -157,7 +173,7 @@ module.exports = async function (config) {
 	const resultPages = pages
 		.map(htmlWebpackConfig)
 		.map(conf => new HtmlWebpackPlugin(conf))
-		.concat([new HtmlWebpackExcludeAssetsPlugin()]);
+		.concat([new HtmlWebpackSkipAssetsPlugin()]);
 
 	return config.prerender
 		? resultPages.concat([
@@ -169,10 +185,9 @@ module.exports = async function (config) {
 // Adds a preact_prerender_data in every folder so that the data could be fetched separately.
 class PrerenderDataExtractPlugin {
 	constructor(page) {
-		const cliData = page.CLI_DATA || {};
-		const { url } = cliData.preRenderData || {};
+		const url = page.url;
 		this.location_ = url.endsWith('/') ? url : url + '/';
-		this.data_ = JSON.stringify(cliData.preRenderData || {});
+		this.data_ = JSON.stringify(page || {});
 	}
 	apply(compiler) {
 		compiler.hooks.emit.tap('PrerenderDataExtractPlugin', compilation => {

packages/cli/lib/lib/webpack/webpack-client-config.js

@@ -258,7 +258,7 @@ function isProd(config) {
 				preload: 'media',
 				pruneSource: false,
 				logLevel: 'silent',
-				additionalStylesheets: ['*.css'],
+				additionalStylesheets: ['route-*.css'],
 			})
 		);
 	}

packages/cli/lib/resources/body-end.ejs

@@ -1,18 +1,18 @@
-<%= htmlWebpackPlugin.options.ssr() %>
-<% if (htmlWebpackPlugin.options.config.prerender === true) { %>
+<%= cli.ssr %>
+<% if (cli.config.prerender === true) { %>
 	<script type="__PREACT_CLI_DATA__">
-		<%= encodeURI(JSON.stringify(htmlWebpackPlugin.options.CLI_DATA)) %>
+		<%= encodeURI(JSON.stringify(cli.CLI_DATA)) %>
 	</script>
 <% } %>
-<% if (webpack.assets.filter(entry => entry.name.match(/bundle(\.\w{5})?.esm.js$/)).length > 0) { %>
-	<script crossorigin="anonymous" src="<%= htmlWebpackPlugin.files.publicPath %><%= webpack.assets.filter(entry => entry.name.match(/bundle(\.\w{5})?.esm.js$/))[0].name %>" type="module"></script>
+<% if (htmlWebpackPlugin.files.js.filter(entry => entry.match(/bundle(\.\w{5})?.esm.js$/)).length > 0) { %>
+	<script crossorigin="anonymous" src="<%= htmlWebpackPlugin.files.js.filter(entry => entry.match(/bundle(\.\w{5})?.esm.js$/))[0] %>" type="module"></script>
 	<%
 		/*Fetch and Promise polyfills are not needed for browsers that support type=module
 		Please re-evaluate below line if adding more polyfills.*/
 	%>
-	<script nomodule src="<%= htmlWebpackPlugin.files.chunks["polyfills"].entry %>"></script>
-	<script nomodule defer src="<%= htmlWebpackPlugin.files.chunks['bundle'].entry %>"></script>
+	<script nomodule src="<%= cli.entrypoints['polyfills'] %>"></script>
+	<script nomodule defer src="<%= cli.entrypoints['bundle'] %>"></script>
 <% } else { %>
-	<script <%= htmlWebpackPlugin.options.scriptLoading %>  src="<%= htmlWebpackPlugin.files.chunks['bundle'].entry %>"></script>
-	<script nomodule src="<%= htmlWebpackPlugin.files.chunks["polyfills"].entry %>"></script>
+	<script <%= htmlWebpackPlugin.options.scriptLoading %>  src="<%= cli.entrypoints['bundle'] %>"></script>
+	<script nomodule src="<%= cli.entrypoints['polyfills'] %>"></script>
 <% } %>

packages/cli/lib/resources/head-end.ejs

@@ -1,11 +1,10 @@
 <link rel="manifest" href="<%= htmlWebpackPlugin.files.publicPath %>manifest.json">
-<% if (htmlWebpackPlugin.options.manifest.theme_color) { %>
-	<meta name="theme-color" content="<%= htmlWebpackPlugin.options.manifest.theme_color %>">
+<% if (cli.manifest.theme_color) { %>
+	<meta name="theme-color" content="<%= cli.manifest.theme_color %>">
 <% } %>
-<% const loadManifest = htmlWebpackPlugin.options.createLoadManifest(compilation.assets, webpack.namedChunkGroups);%>
-<% const filesRegexp = htmlWebpackPlugin.options.inlineCss ? /\.(chunk\.\w{5}\.css|js)$/ : /\.(css|js)$/;%>
-<% for (const file in loadManifest[htmlWebpackPlugin.options.url]) { %>
-	<% if (htmlWebpackPlugin.options.preload && file && file.match(filesRegexp)) { %>
+<% const filesRegexp = cli.inlineCss ? /\.(chunk\.\w{5}\.css|js)$/ : /\.(css|js)$/;%>
+<% for (const file in cli.loadManifest[cli.url]) { %>
+	<% if (cli.preload && file && file.match(filesRegexp)) { %>
 		<% /* crossorigin for main bundle as that is loaded from `<script type=module` tag, other lazy loaded bundles are from webpack so its not needed */ %>
 		<link rel="preload" href="<%= htmlWebpackPlugin.files.publicPath + file %>" as="<%= file.match(/\.css$/)?'style':'script' %>" <%= file.match(/bundle\.\w{5}\.esm\.js$/)?'crossorigin="anonymous"':'' %>>
 	<% } %>

packages/cli/package.json

@@ -94,7 +94,7 @@
     "compression-webpack-plugin": "^6.0.4",
     "console-clear": "^1.0.0",
     "copy-webpack-plugin": "^6.2.1",
-    "critters-webpack-plugin": "^2.5.0",
+    "critters-webpack-plugin": "^3.0.2",
     "cross-spawn-promise": "^0.10.1",
     "css-loader": "^5.2.4",
     "ejs-loader": "^0.5.0",
@@ -105,8 +105,8 @@
     "get-port": "^5.0.0",
     "gittar": "^0.1.0",
     "glob": "^7.1.4",
-    "html-webpack-exclude-assets-plugin": "0.0.7",
-    "html-webpack-plugin": "^3.2.0",
+    "html-webpack-plugin": "^4.5.2",
+    "html-webpack-skip-assets-plugin": "1.0.3",
     "ip": "^1.1.5",
     "isomorphic-unfetch": "^3.1.0",
     "kleur": "^4.1.4",

packages/prerender-data-provider/src/hook.js

@@ -38,8 +38,8 @@ function usePrerenderData(props, doAutomaticFetch = true) {
 		}
 	}
 
-	if (contextValue.CLI_DATA && contextValue.CLI_DATA.preRenderData) {
-		value = contextValue.CLI_DATA.preRenderData;
+	if (contextValue) {
+		value = contextValue;
 	}
 
 	const data = getPrerenderdata(state.value || value, props);

packages/prerender-data-provider/src/render-prop.js

@@ -49,8 +49,8 @@ class PreRenderDataSource extends Component {
 				{contextValue => {
 					let obtainedContextValue;
 					// If the data is in script tag, it will be accesible from the following chaining
-					if (contextValue.CLI_DATA && contextValue.CLI_DATA.preRenderData) {
-						obtainedContextValue = contextValue.CLI_DATA.preRenderData;
+					if (contextValue) {
+						obtainedContextValue = contextValue;
 					}
 					const preRenderDataToBePassed = getPrerenderdata(
 						value || obtainedContextValue,