554 lines
21 KiB
JavaScript
554 lines
21 KiB
JavaScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import cheerio from "cheerio";
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import fsRoot from "fs";
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const fs = fsRoot.promises;
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import path from "path";
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import xxhash from 'xxhashjs';
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import { rollup } from 'rollup';
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import postcss from "postcss";
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import postcssImport from "postcss-import";
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import { fileURLToPath } from 'url';
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import { dirname } from 'path';
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import commander from "commander";
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// needed for legacy bundle
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import babel from '@rollup/plugin-babel';
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// needed to find the polyfill modules in the main-legacy.js bundle
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import { nodeResolve } from '@rollup/plugin-node-resolve';
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// needed because some of the polyfills are written as commonjs modules
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import commonjs from '@rollup/plugin-commonjs';
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// multi-entry plugin so we can add polyfill file to main
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import multi from '@rollup/plugin-multi-entry';
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import removeJsComments from 'rollup-plugin-cleanup';
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// replace urls of asset names with content hashed version
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import postcssUrl from "postcss-url";
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import cssvariables from "postcss-css-variables";
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import autoprefixer from "autoprefixer";
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import flexbugsFixes from "postcss-flexbugs-fixes";
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = dirname(__filename);
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const projectDir = path.join(__dirname, "../");
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const cssSrcDir = path.join(projectDir, "src/platform/web/ui/css/");
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const parameters = new commander.Command();
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parameters
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.option("--modern-only", "don't make a legacy build")
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.option("--override-imports <json file>", "pass in a file to override import paths, see doc/SKINNING.md")
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.option("--override-css <main css file>", "pass in an alternative main css file")
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parameters.parse(process.argv);
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async function build({modernOnly, overrideImports, overrideCss}) {
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// get version number
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const version = JSON.parse(await fs.readFile(path.join(projectDir, "package.json"), "utf8")).version;
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let importOverridesMap;
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if (overrideImports) {
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importOverridesMap = await readImportOverrides(overrideImports);
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}
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const devHtml = await fs.readFile(path.join(projectDir, "index.html"), "utf8");
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const doc = cheerio.load(devHtml);
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const themes = [];
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findThemes(doc, themeName => {
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themes.push(themeName);
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});
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// clear target dir
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const targetDir = path.join(projectDir, "target/");
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await removeDirIfExists(targetDir);
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await createDirs(targetDir, themes);
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const assets = new AssetMap(targetDir);
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// copy olm assets
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const olmAssets = await copyFolder(path.join(projectDir, "lib/olm/"), assets.directory);
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assets.addSubMap(olmAssets);
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await assets.write(`hydrogen.js`, await buildJs("src/main.js", ["src/platform/web/Platform.js"], importOverridesMap));
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if (!modernOnly) {
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await assets.write(`hydrogen-legacy.js`, await buildJsLegacy("src/main.js", [
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'src/platform/web/legacy-polyfill.js',
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'src/platform/web/LegacyPlatform.js'
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], importOverridesMap));
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await assets.write(`worker.js`, await buildJsLegacy("src/platform/web/worker/main.js", ['src/platform/web/worker/polyfill.js']));
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}
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// copy over non-theme assets
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const baseConfig = JSON.parse(await fs.readFile(path.join(projectDir, "assets/config.json"), {encoding: "utf8"}));
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const downloadSandbox = "download-sandbox.html";
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let downloadSandboxHtml = await fs.readFile(path.join(projectDir, `assets/${downloadSandbox}`));
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await assets.write(downloadSandbox, downloadSandboxHtml);
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// creates the directories where the theme css bundles are placed in,
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// and writes to assets, so the build bundles can translate them, so do it first
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await copyThemeAssets(themes, assets);
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await buildCssBundles(buildCssLegacy, themes, assets, overrideCss);
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await buildManifest(assets);
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// all assets have been added, create a hash from all assets name to cache unhashed files like index.html
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assets.addToHashForAll("index.html", devHtml);
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let swSource = await fs.readFile(path.join(projectDir, "src/platform/web/service-worker.js"), "utf8");
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assets.addToHashForAll("sw.js", swSource);
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const globalHash = assets.hashForAll();
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await buildServiceWorker(swSource, version, globalHash, assets);
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await buildHtml(doc, version, baseConfig, globalHash, modernOnly, assets);
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console.log(`built hydrogen ${version} (${globalHash}) successfully with ${assets.size} files`);
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}
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async function findThemes(doc, callback) {
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doc("link[rel~=stylesheet][title]").each((i, el) => {
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const theme = doc(el);
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const href = theme.attr("href");
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const themesPrefix = "/themes/";
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const prefixIdx = href.indexOf(themesPrefix);
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if (prefixIdx !== -1) {
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const themeNameStart = prefixIdx + themesPrefix.length;
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const themeNameEnd = href.indexOf("/", themeNameStart);
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const themeName = href.substr(themeNameStart, themeNameEnd - themeNameStart);
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callback(themeName, theme);
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}
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});
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}
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async function createDirs(targetDir, themes) {
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await fs.mkdir(targetDir);
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const themeDir = path.join(targetDir, "themes");
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await fs.mkdir(themeDir);
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for (const theme of themes) {
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await fs.mkdir(path.join(themeDir, theme));
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}
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}
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async function copyThemeAssets(themes, assets) {
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for (const theme of themes) {
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const themeDstFolder = path.join(assets.directory, `themes/${theme}`);
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const themeSrcFolder = path.join(cssSrcDir, `themes/${theme}`);
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const themeAssets = await copyFolder(themeSrcFolder, themeDstFolder, file => {
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return !file.endsWith(".css");
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});
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assets.addSubMap(themeAssets);
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}
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return assets;
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}
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async function buildHtml(doc, version, baseConfig, globalHash, modernOnly, assets) {
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// transform html file
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// change path to main.css to css bundle
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doc("link[rel=stylesheet]:not([title])").attr("href", assets.resolve(`hydrogen.css`));
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// adjust file name of icon on iOS
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doc("link[rel=apple-touch-icon]").attr("href", assets.resolve(`icon-maskable.png`));
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// change paths to all theme stylesheets
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findThemes(doc, (themeName, theme) => {
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theme.attr("href", assets.resolve(`themes/${themeName}/bundle.css`));
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});
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const configJSON = JSON.stringify(Object.assign({}, baseConfig, {
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worker: assets.has("worker.js") ? assets.resolve(`worker.js`) : null,
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downloadSandbox: assets.resolve("download-sandbox.html"),
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serviceWorker: "sw.js",
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olm: {
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wasm: assets.resolve("olm.wasm"),
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legacyBundle: assets.resolve("olm_legacy.js"),
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wasmBundle: assets.resolve("olm.js"),
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}
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}));
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const modernScript = `import {main, Platform} from "./${assets.resolve(`hydrogen.js`)}"; main(new Platform(document.body, ${configJSON}));`;
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const mainScripts = [
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`<script type="module">${wrapWithLicenseComments(modernScript)}</script>`
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];
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if (!modernOnly) {
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const legacyScript = `hydrogen.main(new hydrogen.Platform(document.body, ${configJSON}));`;
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mainScripts.push(
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`<script type="text/javascript" nomodule src="${assets.resolve(`hydrogen-legacy.js`)}"></script>`,
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`<script type="text/javascript" nomodule>${wrapWithLicenseComments(legacyScript)}</script>`
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);
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}
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doc("script#main").replaceWith(mainScripts.join(""));
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const versionScript = doc("script#version");
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versionScript.attr("type", "text/javascript");
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let vSource = versionScript.contents().text();
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vSource = vSource.replace(`"%%VERSION%%"`, `"${version}"`);
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vSource = vSource.replace(`"%%GLOBAL_HASH%%"`, `"${globalHash}"`);
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versionScript.text(wrapWithLicenseComments(vSource));
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doc("head").append(`<link rel="manifest" href="${assets.resolve("manifest.json")}">`);
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await assets.writeUnhashed("index.html", doc.html());
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}
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async function buildJs(mainFile, extraFiles, importOverrides) {
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// create js bundle
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const plugins = [multi(), removeJsComments({comments: "none"})];
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if (importOverrides) {
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plugins.push(overridesAsRollupPlugin(importOverrides));
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}
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const bundle = await rollup({
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input: extraFiles.concat(mainFile),
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plugins
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});
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const {output} = await bundle.generate({
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format: 'es',
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// TODO: can remove this?
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name: `hydrogen`
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});
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const code = output[0].code;
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return wrapWithLicenseComments(code);
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}
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async function buildJsLegacy(mainFile, extraFiles, importOverrides) {
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// compile down to whatever IE 11 needs
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const babelPlugin = babel.babel({
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babelHelpers: 'bundled',
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exclude: 'node_modules/**',
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presets: [
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[
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"@babel/preset-env",
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{
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useBuiltIns: "entry",
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corejs: "3",
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targets: "IE 11",
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// we provide our own promise polyfill (es6-promise)
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// with support for synchronous flushing of
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// the queue for idb where needed
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exclude: ["es.promise", "es.promise.all-settled", "es.promise.finally"]
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}
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]
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]
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});
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const plugins = [multi(), commonjs()];
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if (importOverrides) {
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plugins.push(overridesAsRollupPlugin(importOverrides));
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}
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plugins.push(nodeResolve(), babelPlugin);
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// create js bundle
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const rollupConfig = {
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// important the extraFiles come first,
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// so polyfills are available in the global scope
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// if needed for the mainfile
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input: extraFiles.concat(mainFile),
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plugins
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};
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const bundle = await rollup(rollupConfig);
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const {output} = await bundle.generate({
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format: 'iife',
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name: `hydrogen`
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});
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const code = output[0].code;
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return wrapWithLicenseComments(code);
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}
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function wrapWithLicenseComments(code) {
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// Add proper license comments to make GNU LibreJS accept the file
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const start = '// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0';
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const end = '// @license-end';
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return `${start}\n${code}\n${end}`;
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}
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const NON_PRECACHED_JS = [
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"hydrogen-legacy.js",
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"olm_legacy.js",
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"worker.js"
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];
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function isPreCached(asset) {
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return asset.endsWith(".svg") ||
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asset.endsWith(".png") ||
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asset.endsWith(".css") ||
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asset.endsWith(".wasm") ||
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asset.endsWith(".html") ||
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// most environments don't need the worker
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asset.endsWith(".js") && !NON_PRECACHED_JS.includes(asset);
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}
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async function buildManifest(assets) {
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const webManifest = JSON.parse(await fs.readFile(path.join(projectDir, "assets/manifest.json"), "utf8"));
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// copy manifest icons
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for (const icon of webManifest.icons) {
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let iconData = await fs.readFile(path.join(projectDir, icon.src));
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const iconTargetPath = path.basename(icon.src);
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icon.src = await assets.write(iconTargetPath, iconData);
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}
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await assets.write("manifest.json", JSON.stringify(webManifest));
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}
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async function buildServiceWorker(swSource, version, globalHash, assets) {
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const unhashedPreCachedAssets = ["index.html"];
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const hashedPreCachedAssets = [];
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const hashedCachedOnRequestAssets = [];
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for (const [unresolved, resolved] of assets) {
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if (unresolved === resolved) {
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unhashedPreCachedAssets.push(resolved);
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} else if (isPreCached(unresolved)) {
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hashedPreCachedAssets.push(resolved);
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} else {
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hashedCachedOnRequestAssets.push(resolved);
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}
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}
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const replaceArrayInSource = (name, value) => {
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const newSource = swSource.replace(`${name} = []`, `${name} = ${JSON.stringify(value)}`);
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if (newSource === swSource) {
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throw new Error(`${name} was not found in the service worker source`);
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}
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return newSource;
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};
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const replaceStringInSource = (name, value) => {
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const newSource = swSource.replace(new RegExp(`${name}\\s=\\s"[^"]*"`), `${name} = ${JSON.stringify(value)}`);
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if (newSource === swSource) {
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throw new Error(`${name} was not found in the service worker source`);
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}
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return newSource;
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};
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// write service worker
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swSource = swSource.replace(`"%%VERSION%%"`, `"${version}"`);
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swSource = swSource.replace(`"%%GLOBAL_HASH%%"`, `"${globalHash}"`);
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swSource = replaceArrayInSource("UNHASHED_PRECACHED_ASSETS", unhashedPreCachedAssets);
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swSource = replaceArrayInSource("HASHED_PRECACHED_ASSETS", hashedPreCachedAssets);
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swSource = replaceArrayInSource("HASHED_CACHED_ON_REQUEST_ASSETS", hashedCachedOnRequestAssets);
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swSource = replaceStringInSource("NOTIFICATION_BADGE_ICON", assets.resolve("icon.png"));
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// service worker should not have a hashed name as it is polled by the browser for updates
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await assets.writeUnhashed("sw.js", swSource);
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}
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async function buildCssBundles(buildFn, themes, assets, mainCssFile = null) {
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if (!mainCssFile) {
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mainCssFile = path.join(cssSrcDir, "main.css");
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}
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const bundleCss = await buildFn(mainCssFile);
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await assets.write(`hydrogen.css`, bundleCss);
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for (const theme of themes) {
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const themeRelPath = `themes/${theme}/`;
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const themeRoot = path.join(cssSrcDir, themeRelPath);
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const assetUrlMapper = ({absolutePath}) => {
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if (!absolutePath.startsWith(themeRoot)) {
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throw new Error("resource is out of theme directory: " + absolutePath);
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}
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const relPath = absolutePath.substr(themeRoot.length);
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const hashedDstPath = assets.resolve(path.join(themeRelPath, relPath));
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if (hashedDstPath) {
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return hashedDstPath.substr(themeRelPath.length);
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}
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};
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const themeCss = await buildFn(path.join(themeRoot, `theme.css`), assetUrlMapper);
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await assets.write(path.join(themeRelPath, `bundle.css`), themeCss);
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}
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}
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// async function buildCss(entryPath, urlMapper = null) {
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// const preCss = await fs.readFile(entryPath, "utf8");
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// const options = [postcssImport];
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// if (urlMapper) {
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// options.push(postcssUrl({url: urlMapper}));
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// }
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// const cssBundler = postcss(options);
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// const result = await cssBundler.process(preCss, {from: entryPath});
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// return result.css;
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// }
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async function buildCssLegacy(entryPath, urlMapper = null) {
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const preCss = await fs.readFile(entryPath, "utf8");
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const options = [
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postcssImport,
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cssvariables({
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preserve: (declaration) => {
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return declaration.value.indexOf("var(--ios-") == 0;
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}
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}),
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autoprefixer({overrideBrowserslist: ["IE 11"], grid: "no-autoplace"}),
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flexbugsFixes()
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];
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if (urlMapper) {
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options.push(postcssUrl({url: urlMapper}));
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}
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const cssBundler = postcss(options);
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const result = await cssBundler.process(preCss, {from: entryPath});
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return result.css;
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}
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async function removeDirIfExists(targetDir) {
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try {
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await fs.rmdir(targetDir, {recursive: true});
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} catch (err) {
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if (err.code !== "ENOENT") {
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throw err;
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}
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}
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}
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async function copyFolder(srcRoot, dstRoot, filter, assets = null) {
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assets = assets || new AssetMap(dstRoot);
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const dirEnts = await fs.readdir(srcRoot, {withFileTypes: true});
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for (const dirEnt of dirEnts) {
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const dstPath = path.join(dstRoot, dirEnt.name);
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const srcPath = path.join(srcRoot, dirEnt.name);
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if (dirEnt.isDirectory()) {
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await fs.mkdir(dstPath);
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await copyFolder(srcPath, dstPath, filter, assets);
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} else if ((dirEnt.isFile() || dirEnt.isSymbolicLink()) && (!filter || filter(srcPath))) {
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const content = await fs.readFile(srcPath);
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await assets.write(dstPath, content);
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}
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}
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return assets;
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}
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function contentHash(str) {
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var hasher = new xxhash.h32(0);
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hasher.update(str);
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return hasher.digest();
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}
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class AssetMap {
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constructor(targetDir) {
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// remove last / if any, so substr in create works well
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this._targetDir = path.resolve(targetDir);
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this._assets = new Map();
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// hashes for unhashed resources so changes in these resources also contribute to the hashForAll
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this._unhashedHashes = [];
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}
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_toRelPath(resourcePath) {
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let relPath = resourcePath;
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if (path.isAbsolute(resourcePath)) {
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if (!resourcePath.startsWith(this._targetDir)) {
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throw new Error(`absolute path ${resourcePath} that is not within target dir ${this._targetDir}`);
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}
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relPath = resourcePath.substr(this._targetDir.length + 1); // + 1 for the /
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}
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return relPath;
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}
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_create(resourcePath, content) {
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const relPath = this._toRelPath(resourcePath);
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const hash = contentHash(Buffer.from(content));
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const dir = path.dirname(relPath);
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const extname = path.extname(relPath);
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const basename = path.basename(relPath, extname);
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const dstRelPath = path.join(dir, `${basename}-${hash}${extname}`);
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this._assets.set(relPath, dstRelPath);
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return dstRelPath;
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}
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async write(resourcePath, content) {
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const relPath = this._create(resourcePath, content);
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const fullPath = path.join(this.directory, relPath);
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if (typeof content === "string") {
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await fs.writeFile(fullPath, content, "utf8");
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} else {
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await fs.writeFile(fullPath, content);
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}
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return relPath;
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}
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async writeUnhashed(resourcePath, content) {
|
|
const relPath = this._toRelPath(resourcePath);
|
|
this._assets.set(relPath, relPath);
|
|
const fullPath = path.join(this.directory, relPath);
|
|
if (typeof content === "string") {
|
|
await fs.writeFile(fullPath, content, "utf8");
|
|
} else {
|
|
await fs.writeFile(fullPath, content);
|
|
}
|
|
return relPath;
|
|
}
|
|
|
|
get directory() {
|
|
return this._targetDir;
|
|
}
|
|
|
|
resolve(resourcePath) {
|
|
const relPath = this._toRelPath(resourcePath);
|
|
const result = this._assets.get(relPath);
|
|
if (!result) {
|
|
throw new Error(`unknown path: ${relPath}, only know ${Array.from(this._assets.keys()).join(", ")}`);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
addSubMap(assetMap) {
|
|
if (!assetMap.directory.startsWith(this.directory)) {
|
|
throw new Error(`map directory doesn't start with this directory: ${assetMap.directory} ${this.directory}`);
|
|
}
|
|
const relSubRoot = assetMap.directory.substr(this.directory.length + 1);
|
|
for (const [key, value] of assetMap._assets.entries()) {
|
|
this._assets.set(path.join(relSubRoot, key), path.join(relSubRoot, value));
|
|
}
|
|
}
|
|
|
|
[Symbol.iterator]() {
|
|
return this._assets.entries();
|
|
}
|
|
|
|
isUnhashed(relPath) {
|
|
const resolvedPath = this._assets.get(relPath);
|
|
if (!resolvedPath) {
|
|
throw new Error("Unknown asset: " + relPath);
|
|
}
|
|
return relPath === resolvedPath;
|
|
}
|
|
|
|
get size() {
|
|
return this._assets.size;
|
|
}
|
|
|
|
has(relPath) {
|
|
return this._assets.has(relPath);
|
|
}
|
|
|
|
hashForAll() {
|
|
const globalHashAssets = Array.from(this).map(([, resolved]) => resolved);
|
|
globalHashAssets.push(...this._unhashedHashes);
|
|
globalHashAssets.sort();
|
|
return contentHash(globalHashAssets.join(","));
|
|
}
|
|
|
|
addToHashForAll(resourcePath, content) {
|
|
this._unhashedHashes.push(`${resourcePath}-${contentHash(Buffer.from(content))}`);
|
|
}
|
|
}
|
|
|
|
async function readImportOverrides(filename) {
|
|
const json = await fs.readFile(filename, "utf8");
|
|
const mapping = new Map(Object.entries(JSON.parse(json)));
|
|
return {
|
|
basedir: path.dirname(path.resolve(filename))+path.sep,
|
|
mapping
|
|
};
|
|
}
|
|
|
|
function overridesAsRollupPlugin(importOverrides) {
|
|
const {mapping, basedir} = importOverrides;
|
|
return {
|
|
name: "rewrite-imports",
|
|
resolveId (source, importer) {
|
|
let file;
|
|
if (source.startsWith(path.sep)) {
|
|
file = source;
|
|
} else {
|
|
file = path.join(path.dirname(importer), source);
|
|
}
|
|
if (file.startsWith(basedir)) {
|
|
const searchPath = file.substr(basedir.length);
|
|
const replacingPath = mapping.get(searchPath);
|
|
if (replacingPath) {
|
|
console.info(`replacing ${searchPath} with ${replacingPath}`);
|
|
return path.join(basedir, replacingPath);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
};
|
|
}
|
|
|
|
build(parameters).catch(err => console.error(err));
|