refactor: Disable hashing ssr-build's css (#1733)

* refactor: Disable hashing ssr-build's css

* docs: Adding changeset

* test: Fix unrelated change from altered template

Author: rschristian

.changeset/popular-zebras-yell.md

@@ -0,0 +1,5 @@
+---
+'preact-cli': patch
+---
+
+Disables hash in CSS file names for the SSR build

packages/cli/src/lib/webpack/run-webpack.js

@@ -51,12 +51,14 @@ async function devBuild(env) {
 }
 
 async function prodBuild(env) {
+	env = { ...env, isServer: false, dev: !env.production, ssr: false };
 	let config = await clientConfig(env);
 	await transformConfig(env, config);
 
 	if (env.prerender) {
-		let ssrConfig = serverConfig(env);
-		await transformConfig(env, ssrConfig, true);
+		const serverEnv = Object.assign({}, env, { isServer: true, ssr: true });
+		let ssrConfig = serverConfig(serverEnv);
+		await transformConfig(serverEnv, ssrConfig);
 		let serverCompiler = webpack(ssrConfig);
 		await runCompiler(serverCompiler);
 	}

packages/cli/src/lib/webpack/transform-config.js

@@ -90,7 +90,7 @@ function parseConfig(config) {
 	return transformers;
 }
 
-module.exports = async function (env, webpackConfig, isServer = false) {
+module.exports = async function (env, webpackConfig) {
 	const { configFile, isDefault } =
 		env.config !== 'preact.config.js'
 			? { configFile: env.config, isDefault: false }
@@ -122,16 +122,7 @@ module.exports = async function (env, webpackConfig, isServer = false) {
 	const helpers = new WebpackConfigHelpers(env.cwd);
 	for (let [transformer, options] of transformers) {
 		try {
-			await transformer(
-				webpackConfig,
-				Object.assign({}, env, {
-					isServer,
-					dev: !env.production,
-					ssr: isServer,
-				}),
-				helpers,
-				options
-			);
+			await transformer(webpackConfig, env, helpers, options);
 		} catch (err) {
 			throw new Error((`Error at ${cliConfig}: \n` + err && err.stack) || err);
 		}

packages/cli/src/lib/webpack/webpack-base-config.js

@@ -285,7 +285,8 @@ module.exports = function createBaseConfig(env) {
 			// Fix for https://github.com/webpack-contrib/mini-css-extract-plugin/issues/151
 			new RemoveEmptyScriptsPlugin(),
 			new MiniCssExtractPlugin({
-				filename: isProd ? '[name].[contenthash:5].css' : '[name].css',
+				filename:
+					isProd && !env.isServer ? '[name].[contenthash:5].css' : '[name].css',
 				chunkFilename: isProd
 					? '[name].chunk.[contenthash:5].css'
 					: '[name].chunk.css',

packages/cli/src/lib/webpack/webpack-server-config.js

@@ -14,7 +14,6 @@ function serverConfig(env) {
 			publicPath: '/',
 			filename: 'ssr-bundle.js',
 			path: resolve(env.dest, 'ssr-build'),
-			chunkFilename: '[name].chunk.[chunkhash:5].js',
 			libraryTarget: 'commonjs2',
 		},
 		externals: {

packages/cli/tests/images/build.js

@@ -9,8 +9,8 @@ exports.default = {
 	'assets/preact-logo-inverse.svg': 649,
 	'assets/favicon.ico': 15086,
 
-	'ssr-build/ssr-bundle.038a0.css': 2352,
-	'ssr-build/ssr-bundle.038a0.css.map': 3609,
+	'ssr-build/ssr-bundle.css': 2352,
+	'ssr-build/ssr-bundle.css.map': 3609,
 	'ssr-build/ssr-bundle.js': 27197,
 	'ssr-build/ssr-bundle.js.map': 61808,
 	'ssr-build/asset-manifest.json': 82,