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build.ts
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203 lines (187 loc) · 5.61 KB
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/* eslint-disable no-await-in-loop, no-console */
import { basename } from "node:path"; // eslint-disable-line unicorn/import-style
import { xcss } from "bun-plugin-ekscss";
import * as csso from "csso";
import * as lightningcss from "lightningcss";
import { PurgeCSS, type RawContent } from "purgecss";
import * as terser from "terser";
import { createManifest } from "./manifest.config.ts";
import xcssConfig from "./xcss.config.js";
const env = Bun.env.NODE_ENV;
const dev = env === "development";
function makeHTML(release: string) {
// nosemgrep: generic-api-key
const bugboxApiKey = "AZczqkPBcACag7DE9p762A";
return `
<!doctype html>
<meta charset=utf-8>
<meta name=google content=notranslate>
<link href=literata.ttf rel=preload as=font type=font/ttf crossorigin>
<link href=reader.css rel=stylesheet>
<script src=health.js crossorigin data-key=${bugboxApiKey} data-release=${release}${
env === "production" ? "" : ` data-env=${String(env)}`
}></script>
<script src=reader.js defer></script>
`
.trim()
.replaceAll(/\n\s+/g, "\n"); // remove leading whitespace
}
async function minifyCSS(artifacts: Bun.BuildArtifact[]) {
const content: RawContent[] = [];
const purgecss = new PurgeCSS();
const encoder = new TextEncoder();
for (const artifact of artifacts) {
if (artifact.path.endsWith(".js") || artifact.path.endsWith(".mjs")) {
content.push({ extension: ".js", raw: await artifact.text() });
}
}
for (const artifact of artifacts) {
if (artifact.path.endsWith(".css")) {
const filename = basename(artifact.path);
const source = await artifact.text();
const purged = await purgecss.purge({
content,
css: [{ raw: source }],
safelist: ["html", "body"],
blocklist: [
// XXX: Remember to remove if actually using the element tag
"article",
"aside",
"blockquote",
"break",
"canvas",
"dd",
// "disabled",
"dt",
"embed",
"figcaption",
"figure",
// "footer",
"h1",
"h2",
"h3",
"h4",
"h5",
"h6",
"header",
"hgroup",
"hr",
"iframe",
"img",
"input",
"link",
"main",
"nav",
"ol",
"pre",
"section",
"select",
"source",
"svg",
"table",
"textarea",
"ul",
],
});
const minified = lightningcss.transform({
filename,
code: encoder.encode(purged[0].css),
minify: true,
// eslint-disable-next-line no-bitwise
targets: { chrome: 134 << 16 }, // matches manifest minimum_chrome_version
});
if (minified.warnings.length > 0) console.error(minified.warnings);
const minified2 = csso.minify(minified.code.toString(), {
filename,
forceMediaMerge: true, // somewhat unsafe
usage: {
blacklist: {
classes: [
"button", // #apply mapped to "button"
"disabled", // not actually used (as class)
],
},
},
// debug: true,
});
await Bun.write(artifact.path, minified2.css);
}
}
}
async function minifyJS(artifacts: Bun.BuildArtifact[]): Promise<void> {
for (const artifact of artifacts) {
if (artifact.path.endsWith(".js") || artifact.path.endsWith(".mjs")) {
const source = await artifact.text();
const result = await terser.minify(source, {
ecma: 2020,
compress: {
reduce_funcs: false, // prevent single-use function inlining
hoist_funs: true,
passes: 2,
// NOTE: Comment out to keep performance markers for debugging.
pure_funcs: ["performance.mark", "performance.measure"],
},
format: {
semicolons: false, // better debugging with near-zero overhead
},
});
await Bun.write(artifact.path, result.code!);
}
}
}
console.time("prebuild");
await Bun.$`rm -rf dist`;
await Bun.$`cp -r static dist`;
console.timeEnd("prebuild");
// Extension manifest
console.time("manifest");
const manifest = createManifest();
const release = manifest.version_name ?? manifest.version;
await Bun.write("dist/manifest.json", JSON.stringify(manifest));
console.timeEnd("manifest");
// Reader app HTML
console.time("html");
await Bun.write("dist/reader.html", makeHTML(release));
console.timeEnd("html");
// Health insights (exception monitoring)
console.time("build:health");
const out1 = await Bun.build({
entrypoints: ["src/health.ts"],
outdir: "dist",
target: "browser",
define: {
"process.env.APP_RELEASE": JSON.stringify(release),
"process.env.NODE_ENV": JSON.stringify(env),
},
banner: '"use strict";',
minify: !dev,
sourcemap: dev ? "linked" : "none",
});
console.timeEnd("build:health");
// Reader app JS
console.time("build:reader");
const out2 = await Bun.build({
entrypoints: ["src/reader.ts"],
outdir: "dist",
target: "browser",
external: ["*.ttf"],
define: {
"process.env.APP_RELEASE": JSON.stringify(release),
"process.env.NODE_ENV": JSON.stringify(env),
},
plugins: [xcss(xcssConfig)],
banner: '"use strict";',
emitDCEAnnotations: true,
minify: !dev,
sourcemap: dev ? "linked" : "none",
});
console.timeEnd("build:reader");
if (!dev) {
console.time("minify:css");
await minifyCSS(out2.outputs);
console.timeEnd("minify:css");
console.time("minify:js");
await minifyJS(out1.outputs);
await minifyJS(out2.outputs);
console.timeEnd("minify:js");
}