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chore: Updating html-webpack-plugin to v4 (#1608)
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* chore: Updating webpack-dev-server (#1646)

* test: Misc changes to test suite

* refactor: Updating prerender-provider

* fix: Temp(?) workaround for Critters not deduping styles

* test: Updating tests

* docs: Adding changeset

* fix: Bumping critters

* junk: Debugging CI

* chore: Bumping critters-webpack

* ci: Fixing PnP test action

* chore: Bumping critters

* test: Updating custom-template tests

* test: Updating sourcemap file size comparision

* test: Custom assertion as key matching was difficult to debug
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rschristian committed Jan 31, 2022
1 parent e98994a commit c6e57ca
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6 changes: 6 additions & 0 deletions .changeset/rude-walls-dress.md
@@ -0,0 +1,6 @@
---
'preact-cli': minor
'@preact/prerender-data-provider': patch
---

Updates to use html-webpack-plugin v4
111 changes: 63 additions & 48 deletions 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');
Expand All @@ -17,8 +19,8 @@ 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)) {
Expand All @@ -34,14 +36,11 @@ 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);

Expand All @@ -56,53 +55,70 @@ 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: '/' }];
Expand Down Expand Up @@ -158,7 +174,7 @@ 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([
Expand All @@ -170,10 +186,9 @@ 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 => {
Expand Down
2 changes: 1 addition & 1 deletion packages/cli/lib/lib/webpack/webpack-client-config.js
Expand Up @@ -252,7 +252,7 @@ function isProd(config) {
preload: 'media',
pruneSource: false,
logLevel: 'silent',
additionalStylesheets: ['*.css'],
additionalStylesheets: ['route-*.css'],
})
);
}
Expand Down
18 changes: 9 additions & 9 deletions 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>
<% } %>
11 changes: 5 additions & 6 deletions 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"':'' %>>
<% } %>
Expand Down
6 changes: 3 additions & 3 deletions packages/cli/package.json
Expand Up @@ -92,7 +92,7 @@
"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",
Expand All @@ -103,8 +103,8 @@
"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",
Expand Down
48 changes: 16 additions & 32 deletions packages/cli/tests/build.test.js
Expand Up @@ -3,11 +3,12 @@ const { existsSync } = require('fs');
const { readFile } = require('fs').promises;
const looksLike = require('html-looks-like');
const { create, build } = require('./lib/cli');
const { snapshot, hasKey, isWithin } = require('./lib/utils');
const { snapshot } = require('./lib/utils');
const { subject } = require('./lib/output');
const images = require('./images/build');
const { promisify } = require('util');
const glob = promisify(require('glob').glob);
const minimatch = require('minimatch');

const prerenderUrlFiles = [
'prerender-urls.json',
Expand Down Expand Up @@ -35,13 +36,15 @@ function getRegExpFromMarkup(markup) {
return new RegExp(minifiedMarkup);
}

function testMatch(src, tar) {
let k, tmp;
let keys = Object.keys(tar);
expect(Object.keys(src)).toHaveLength(keys.length);
for (k in src) {
expect(hasKey(k, keys)).toBeTruthy();
if (!isWithin(src[k], tar[tmp])) return false;
function testMatch(received, expected) {
let receivedKeys = Object.keys(received);
let expectedKeys = Object.keys(expected);
expect(receivedKeys).toHaveLength(expectedKeys.length);
for (let key in expected) {
const receivedKey = receivedKeys.find(k => minimatch(k, key));
expect(key).toFindMatchingKey(receivedKey);

expect(receivedKey).toBeCloseInSize(received[receivedKey], expected[key]);
}
}

Expand Down Expand Up @@ -184,15 +187,16 @@ describe('preact build', () => {
expect(existsSync(file)).toBe(true);
});

it('should use template from the code folder', async () => {
// app with custom template set via preact.config.js
it('should use custom `template.html`', async () => {
let dir = await subject('custom-template');
await build(dir);

let file = join(dir, 'build/index.html');
let html = await readFile(file, 'utf-8');

looksLike(html, images.template);
expect(html).toEqual(
expect.stringMatching(getRegExpFromMarkup(images.template))
);
});

it('should patch global location object', async () => {
Expand All @@ -217,28 +221,8 @@ describe('preact build', () => {
expect(existsSync(file)).toBe(true);
});

it('should inject preact.* variables into template', async () => {
let dir = await subject('custom-template-2');
await build(dir);

let file = join(dir, 'build/index.html');
let html = await readFile(file, 'utf-8');

looksLike(html, images.templateReplaced);
});

it('should replace title with <%= preact.title %>', async () => {
let dir = await subject('custom-template-3');
await build(dir);

let file = join(dir, 'build/index.html');
let html = await readFile(file, 'utf-8');

looksLike(html, images.templateReplaced);
});

it('should error out for invalid argument', async () => {
let dir = await subject('custom-template-3');
let dir = await subject('custom-template');
const mockExit = jest.spyOn(process, 'exit').mockImplementation(() => {});
expect(build(dir, { 'service-worker': false })).rejects.toEqual(
new Error('Invalid argument found.')
Expand Down

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