element-web/webpack.config.js
2021-08-18 17:12:36 +01:00

602 lines
29 KiB
JavaScript

/* eslint-disable quote-props */
const dotenv = require('dotenv');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const HtmlWebpackInjectPreload = require('@principalstudio/html-webpack-inject-preload');
const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
dotenv.config();
let ogImageUrl = process.env.RIOT_OG_IMAGE_URL;
if (!ogImageUrl) ogImageUrl = 'https://app.element.io/themes/element/img/logos/opengraph.png';
const cssThemes = {
// CSS themes
"theme-legacy": "./node_modules/matrix-react-sdk/res/themes/legacy-light/css/legacy-light.scss",
"theme-legacy-dark": "./node_modules/matrix-react-sdk/res/themes/legacy-dark/css/legacy-dark.scss",
"theme-light": "./node_modules/matrix-react-sdk/res/themes/light/css/light.scss",
"theme-dark": "./node_modules/matrix-react-sdk/res/themes/dark/css/dark.scss",
"theme-light-custom": "./node_modules/matrix-react-sdk/res/themes/light-custom/css/light-custom.scss",
"theme-dark-custom": "./node_modules/matrix-react-sdk/res/themes/dark-custom/css/dark-custom.scss",
};
function getActiveThemes() {
// Default to `light` theme when the MATRIX_THEMES environment variable is not defined.
const theme = process.env.MATRIX_THEMES ?? 'light';
const themes = theme.split(',').filter(x => x).map(x => x.trim()).filter(x => x);
return themes;
}
module.exports = (env, argv) => {
let nodeEnv = argv.mode;
if (process.env.CI_PACKAGE) {
// Don't run minification for CI builds (this is only set for runs on develop)
// We override this via environment variable to avoid duplicating the scripts
// in `package.json` just for a different mode.
argv.mode = "development";
// More and more people are using nightly build as their main client
// Libraries like React have a development build that is useful
// when working on the app but adds significant runtime overhead
// We want to use the React production build but not compile the whole
// application to productions standards
nodeEnv = "production";
}
const devMode = nodeEnv !== 'production';
const useHMR = process.env.CSS_HOT_RELOAD === '1' && devMode;
const development = {};
if (argv.mode === "production") {
development['devtool'] = 'nosources-source-map';
} else {
// This makes the sourcemaps human readable for developers. We use eval-source-map
// because the plain source-map devtool ruins the alignment.
development['devtool'] = 'eval-source-map';
}
// Resolve the directories for the react-sdk and js-sdk for later use. We resolve these early so we
// don't have to call them over and over. We also resolve to the package.json instead of the src
// directory so we don't have to rely on a index.js or similar file existing.
const reactSdkSrcDir = path.resolve(require.resolve("matrix-react-sdk/package.json"), '..', 'src');
const jsSdkSrcDir = path.resolve(require.resolve("matrix-js-sdk/package.json"), '..', 'src');
const ACTIVE_THEMES = getActiveThemes();
function getThemesImports() {
const imports = ACTIVE_THEMES.map((t, index) => {
const themeImportPath = cssThemes[`theme-${ t }`].replace('./node_modules/', '');
return themeImportPath;
});
const s = JSON.stringify(ACTIVE_THEMES);
return `
window.MX_insertedThemeStylesCounter = 0;
window.MX_DEV_ACTIVE_THEMES = (${ s });
${ imports.map(i => `import("${ i }")`).join('\n') };
`;
}
return {
...development,
node: {
// Mock out the NodeFS module: The opus decoder imports this wrongly.
fs: 'empty',
},
entry: {
"bundle": "./src/vector/index.ts",
"mobileguide": "./src/vector/mobile_guide/index.ts",
"jitsi": "./src/vector/jitsi/index.ts",
"usercontent": "./node_modules/matrix-react-sdk/src/usercontent/index.js",
...(useHMR ? {} : cssThemes),
},
optimization: {
// Put all of our CSS into one useful place - this is needed for MiniCssExtractPlugin.
// Previously we used a different extraction plugin that did this magic for us, but
// now we need to consider that the CSS needs to be bundled up together.
splitChunks: {
cacheGroups: {
styles: {
name: 'styles',
test: /\.css$/,
enforce: true,
// Do not add `chunks: 'all'` here because you'll break the app entry point.
},
default: {
reuseExistingChunk: true,
},
},
},
// This fixes duplicate files showing up in chrome with sourcemaps enabled.
// See https://github.com/webpack/webpack/issues/7128 for more info.
namedModules: false,
// Minification is normally enabled by default for webpack in production mode, but
// we use a CSS optimizer too and need to manage it ourselves.
minimize: argv.mode === 'production',
minimizer: argv.mode === 'production' ? [new TerserPlugin({}), new OptimizeCSSAssetsPlugin({})] : [],
// Set the value of `process.env.NODE_ENV` for libraries like React
// See also https://v4.webpack.js.org/configuration/optimization/#optimizationnodeenv
nodeEnv,
},
resolve: {
// We define an alternative import path so we can safely use src/ across the react-sdk
// and js-sdk. We already import from src/ where possible to ensure our source maps are
// extremely accurate (and because we're capable of compiling the layers manually rather
// than relying on partially-mangled output from babel), though we do need to fix the
// package level import (stuff like `import {Thing} from "matrix-js-sdk"` for example).
// We can't use the aliasing down below to point at src/ because that'll fail to resolve
// the package.json for the dependency. Instead, we rely on the package.json of each
// layer to have our custom alternate fields to load things in the right order. These are
// the defaults of webpack prepended with `matrix_src_`.
mainFields: ['matrix_src_browser', 'matrix_src_main', 'browser', 'main'],
aliasFields: ['matrix_src_browser', 'browser'],
// We need to specify that TS can be resolved without an extension
extensions: ['.js', '.json', '.ts', '.tsx'],
alias: {
// alias any requires to the react module to the one in our path,
// otherwise we tend to get the react source included twice when
// using `npm link` / `yarn link`.
"react": path.resolve(__dirname, 'node_modules/react'),
"react-dom": path.resolve(__dirname, 'node_modules/react-dom'),
// same goes for js-sdk - we don't need two copies.
"matrix-js-sdk": path.resolve(__dirname, 'node_modules/matrix-js-sdk'),
// and prop-types and sanitize-html
"prop-types": path.resolve(__dirname, 'node_modules/prop-types'),
"sanitize-html": path.resolve(__dirname, 'node_modules/sanitize-html'),
// Define a variable so the i18n stuff can load
"$webapp": path.resolve(__dirname, 'webapp'),
},
},
module: {
noParse: [
// for cross platform compatibility use [\\\/] as the path separator
// this ensures that the regex trips on both Windows and *nix
// don't parse the languages within highlight.js. They cause stack
// overflows (https://github.com/webpack/webpack/issues/1721), and
// there is no need for webpack to parse them - they can just be
// included as-is.
/highlight\.js[\\/]lib[\\/]languages/,
// olm takes ages for webpack to process, and it's already heavily
// optimised, so there is little to gain by us uglifying it.
/olm[\\/](javascript[\\/])?olm\.js$/,
],
rules: [
useHMR && {
test: /devcss\.ts$/,
loader: 'string-replace-loader',
options: {
search: '"use theming";',
replace: getThemesImports(),
},
},
{
test: /\.worker\.ts$/,
loader: "worker-loader",
},
{
test: /\.(ts|js)x?$/,
include: (f) => {
// our own source needs babel-ing
if (f.startsWith(path.resolve(__dirname, 'src'))) return true;
// we use the original source files of react-sdk and js-sdk, so we need to
// run them through babel. Because the path tested is the resolved, absolute
// path, these could be anywhere thanks to yarn link. We must also not
// include node modules inside these modules, so we add 'src'.
if (f.startsWith(reactSdkSrcDir)) return true;
if (f.startsWith(jsSdkSrcDir)) return true;
// but we can't run all of our dependencies through babel (many of them still
// use module.exports which breaks if babel injects an 'include' for its
// polyfills: probably fixable but babeling all our dependencies is probably
// not necessary anyway). So, for anything else, don't babel.
return false;
},
loader: 'babel-loader',
options: {
cacheDirectory: true,
plugins: [
useHMR && require.resolve('react-refresh/babel'),
].filter(Boolean),
},
},
{
test: /\.css$/,
use: [
MiniCssExtractPlugin.loader,
{
loader: 'css-loader',
options: {
importLoaders: 1,
sourceMap: true,
},
},
{
loader: 'postcss-loader',
ident: 'postcss',
options: {
sourceMap: true,
plugins: () => [
// Note that we use significantly fewer plugins on the plain
// CSS parser. If we start to parse plain CSS, we end with all
// kinds of nasty problems (like stylesheets not loading).
//
// You might have noticed that we're also sending regular CSS
// through PostCSS. This looks weird, and in fact is probably
// not what you'd expect, however in order for our CSS build
// to work nicely we have to do this. Because down the line
// our SCSS stylesheets reference plain CSS we have to load
// the plain CSS through PostCSS so it can find it safely. This
// also acts like a babel-for-css by transpiling our (S)CSS
// down/up to the right browser support (prefixes, etc).
// Further, if we don't do this then PostCSS assumes that our
// plain CSS is SCSS and it really doesn't like that, even
// though plain CSS should be compatible. The chunking options
// at the top of this webpack config help group the SCSS and
// plain CSS together for the bundler.
require("postcss-simple-vars")(),
require("postcss-strip-inline-comments")(),
require("postcss-hexrgba")(),
// It's important that this plugin is last otherwise we end
// up with broken CSS.
require('postcss-preset-env')({ stage: 3, browsers: 'last 2 versions' }),
],
parser: "postcss-scss",
"local-plugins": true,
},
},
],
},
{
test: /\.scss$/,
use: [
/**
* This code is hopeful that no .scss outside of our themes will be directly imported in any
* of the JS/TS files.
* Should be MUCH better with webpack 5, but we're stuck to this solution for now.
*/
useHMR ? {
loader: 'style-loader',
/**
* If we refactor the `theme.js` in `matrix-react-sdk` a little bit,
* we could try using `lazyStyleTag` here to add and remove styles on demand,
* that would nicely resolve issues of race conditions for themes,
* at least for development purposes.
*/
options: {
insert: function insertBeforeAt(element) {
const parent = document.querySelector('head');
// We're in iframe
if (!window.MX_DEV_ACTIVE_THEMES) {
parent.appendChild(element);
return;
}
// Properly disable all other instances of themes
element.disabled = true;
element.onload = () => {
element.disabled = true;
};
const theme = window.MX_DEV_ACTIVE_THEMES[window.MX_insertedThemeStylesCounter];
element.setAttribute('data-mx-theme', theme);
window.MX_insertedThemeStylesCounter++;
parent.appendChild(element);
},
},
} : MiniCssExtractPlugin.loader,
{
loader: 'css-loader',
options: {
importLoaders: 1,
sourceMap: true,
},
},
{
loader: 'postcss-loader',
ident: 'postcss',
options: {
sourceMap: true,
plugins: () => [
// Note that we use slightly different plugins for SCSS.
require('postcss-import')(),
require("postcss-mixins")(),
require("postcss-simple-vars")(),
require("postcss-extend")(),
require("postcss-nested")(),
require("postcss-easings")(),
require("postcss-strip-inline-comments")(),
require("postcss-hexrgba")(),
// It's important that this plugin is last otherwise we end
// up with broken CSS.
require('postcss-preset-env')({ stage: 3, browsers: 'last 2 versions' }),
],
parser: "postcss-scss",
"local-plugins": true,
},
},
],
},
{
test: /\.wasm$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
options: {
name: '[name].[hash:7].[ext]',
outputPath: '.',
},
},
{
// Fix up the name of the opus-recorder worker (react-sdk dependency).
// We more or less just want it to be clear it's for opus and not something else.
test: /encoderWorker\.min\.js$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
options: {
// We deliberately override the name so it makes sense in debugging
name: 'opus-encoderWorker.min.[hash:7].[ext]',
outputPath: '.',
},
},
{
// Special case the recorder worklet as it can't end up HMR'd, but the worker-loader
// isn't good enough for us. Note that the worklet-loader is listed as "do not use",
// however it seems to work fine for our purposes.
test: /RecorderWorklet\.ts$/,
type: "javascript/auto",
use: [ // executed last -> first, for some reason.
{
loader: "worklet-loader",
options: {
// Override name so we know what it is in the output.
name: 'recorder-worklet.[hash:7].js',
},
},
{
// TS -> JS because the worklet-loader won't do this for us.
loader: "babel-loader",
},
],
},
{
// This is from the same place as the encoderWorker above, but only needed
// for Safari support.
test: /decoderWorker\.min\.js$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
options: {
// We deliberately override the name so it makes sense in debugging
name: 'opus-decoderWorker.min.[hash:7].[ext]',
outputPath: '.',
},
},
{
// This is from the same place as the encoderWorker above, but only needed
// for Safari support.
test: /decoderWorker\.min\.wasm$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
options: {
// We deliberately don't change the name because the decoderWorker has this
// hardcoded. This is here to avoid the default wasm rule from adding a hash.
name: 'decoderWorker.min.wasm',
outputPath: '.',
},
},
{
// This is from the same place as the encoderWorker above, but only needed
// for Safari support.
test: /waveWorker\.min\.js$/,
loader: "file-loader",
type: "javascript/auto", // https://github.com/webpack/webpack/issues/6725
options: {
// We deliberately override the name so it makes sense in debugging
name: 'wave-encoderWorker.min.[hash:7].[ext]',
outputPath: '.',
},
},
{
// cache-bust languages.json file placed in
// element-web/webapp/i18n during build by copy-res.js
test: /\.*languages.json$/,
type: "javascript/auto",
loader: 'file-loader',
options: {
name: 'i18n/[name].[hash:7].[ext]',
},
},
{
test: /\.(gif|png|svg|ttf|woff|woff2|xml|ico)$/,
// Use a content-based hash in the name so that we can set a long cache
// lifetime for assets while still delivering changes quickly.
oneOf: [
{
// Assets referenced in CSS files
issuer: /\.(scss|css)$/,
loader: 'file-loader',
options: {
esModule: false,
name: '[name].[hash:7].[ext]',
outputPath: getAssetOutputPath,
publicPath: function(url, resourcePath) {
// CSS image usages end up in the `bundles/[hash]` output
// directory, so we adjust the final path to navigate up
// twice.
const outputPath = getAssetOutputPath(url, resourcePath);
return toPublicPath(path.join("../..", outputPath));
},
},
},
{
// Assets referenced in HTML and JS files
loader: 'file-loader',
options: {
esModule: false,
name: '[name].[hash:7].[ext]',
outputPath: getAssetOutputPath,
publicPath: function(url, resourcePath) {
const outputPath = getAssetOutputPath(url, resourcePath);
return toPublicPath(outputPath);
},
},
},
],
},
].filter(Boolean),
},
plugins: [
new webpack.EnvironmentPlugin({
NODE_ENV: 'development', // use 'development' unless process.env.NODE_ENV is defined
DEBUG: false,
}),
// This exports our CSS using the splitChunks and loaders above.
new MiniCssExtractPlugin({
filename: useHMR ? "bundles/[name].css" : "bundles/[hash]/[name].css",
chunkFilename: useHMR ? "bundles/[name].css" : "bundles/[hash]/[name].css",
ignoreOrder: false, // Enable to remove warnings about conflicting order
}),
// This is the app's main entry point.
new HtmlWebpackPlugin({
template: './src/vector/index.html',
// we inject the links ourselves via the template, because
// HtmlWebpackPlugin will screw up our formatting like the names
// of the themes and which chunks we actually care about.
inject: false,
excludeChunks: ['mobileguide', 'usercontent', 'jitsi'],
minify: false,
templateParameters: {
og_image_url: ogImageUrl,
},
}),
// This is the jitsi widget wrapper (embedded, so isolated stack)
new HtmlWebpackPlugin({
template: './src/vector/jitsi/index.html',
filename: 'jitsi.html',
minify: false,
chunks: ['jitsi'],
}),
// This is the mobile guide's entry point (separate for faster mobile loading)
new HtmlWebpackPlugin({
template: './src/vector/mobile_guide/index.html',
filename: 'mobile_guide/index.html',
minify: false,
chunks: ['mobileguide'],
}),
// These are the static error pages for when the javascript env is *really unsupported*
new HtmlWebpackPlugin({
template: './src/vector/static/unable-to-load.html',
filename: 'static/unable-to-load.html',
minify: false,
chunks: [],
}),
new HtmlWebpackPlugin({
template: './src/vector/static/incompatible-browser.html',
filename: 'static/incompatible-browser.html',
minify: false,
chunks: [],
}),
// This is the usercontent sandbox's entry point (separate for iframing)
new HtmlWebpackPlugin({
template: './node_modules/matrix-react-sdk/src/usercontent/index.html',
filename: 'usercontent/index.html',
minify: false,
chunks: ['usercontent'],
}),
new HtmlWebpackInjectPreload({
files: [{ match: /.*Inter.*\.woff2$/ }],
}),
useHMR && new ReactRefreshWebpackPlugin(),
].filter(Boolean),
output: {
path: path.join(__dirname, "webapp"),
// The generated JS (and CSS, from the extraction plugin) are put in a
// unique subdirectory for the build. There will only be one such
// 'bundle' directory in the generated tarball; however, hosting
// servers can collect 'bundles' from multiple versions into one
// directory and symlink it into place - this allows users who loaded
// an older version of the application to continue to access webpack
// chunks even after the app is redeployed.
filename: "bundles/[hash]/[name].js",
chunkFilename: "bundles/[hash]/[name].js",
},
// configuration for the webpack-dev-server
devServer: {
// serve unwebpacked assets from webapp.
contentBase: [
'./webapp',
],
// Only output errors, warnings, or new compilations.
// This hides the massive list of modules.
stats: 'minimal',
// hot: false,
// injectHot: false,
hotOnly: true,
inline: true,
},
};
};
/**
* Merge assets found via CSS and imports into a single tree, while also preserving
* directories under e.g. `res` or similar.
*
* @param {string} url The adjusted name of the file, such as `warning.1234567.svg`.
* @param {string} resourcePath The absolute path to the source file with unmodified name.
* @return {string} The returned paths will look like `img/warning.1234567.svg`.
*/
function getAssetOutputPath(url, resourcePath) {
// `res` is the parent dir for our own assets in various layers
// `dist` is the parent dir for KaTeX assets
const prefix = /^.*[/\\](dist|res)[/\\]/;
if (!resourcePath.match(prefix)) {
throw new Error(`Unexpected asset path: ${resourcePath}`);
}
let outputDir = path.dirname(resourcePath).replace(prefix, "");
if (resourcePath.includes("KaTeX")) {
// Add a clearly named directory segment, rather than leaving the KaTeX
// assets loose in each asset type directory.
outputDir = path.join(outputDir, "KaTeX");
}
return path.join(outputDir, path.basename(url));
}
/**
* Convert path to public path format, which always uses forward slashes, since it will
* be placed directly into things like CSS files.
*
* @param {string} path Some path to a file.
* @returns {string} converted path
*/
function toPublicPath(path) {
return path.replace(/\\/g, '/');
}