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prebuild-minify.js
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prebuild-minify.js
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const fs = require("fs");
const path = require("path");
const stdout = process.stdout;
const UglifyJS = require("terser");
const CleanCSS = require("clean-css");
JSON.minify = require("node-json-minify");
function writeMinified(path, data) {
return new Promise((res, rej) => {
fs.writeFile(path, data, (err) => {
if (err) {
stdout.write(" - ❌\n\n\n", () => {
rej(err);
});
}
stdout.write(" - ✓\n", () => {
res();
});
});
});
}
async function recursiveMinify(dirPath) {
try { var files = fs.readdirSync(dirPath); }
catch(e) { return; }
if (files.length > 0) {
for (let i = 0; i < files.length; i++) {
let filePath = dirPath + '/' + files[i];
if (fs.statSync(filePath).isFile()) {
// Do not process grid.json because it's heavy and pre-minified, and themes and keyboard files to leave them in a human-readable state
if (filePath.endsWith(".json") && !filePath.endsWith("icons.json")) return;
// See #446
if (filePath.endsWith("file-icons-match.js")) return;
await stdout.write(filePath.slice(filePath.indexOf('prebuild-src/')+13)+'...');
switch (filePath.split(".").pop()) {
case "js":
let minified = await UglifyJS.minify(fs.readFileSync(filePath, {encoding: "utf-8"}), {
compress: {
dead_code: false,
unused: false,
warnings: true
},
output: {
beautify: false,
ecma: 6
}
});
if (!minified.error) {
await writeMinified(filePath, minified.code).catch(e => {
throw e;
});
} else {
stdout.write(" - ❌\n\n\n");
throw minified.error;
}
break;
case "css":
let output = new CleanCSS({level:2}).minify(fs.readFileSync(filePath, {encoding:"utf-8"}));
if (output.errors.length >= 1) {
stdout.write(" - ❌\n\n\n");
throw output.errors;
} else {
await writeMinified(filePath, output.styles).catch(e => {
throw e;
});
}
break;
case "json":
let out;
try {
out = JSON.minify(fs.readFileSync(filePath, {encoding:"utf-8"}));
} catch(err) {
stdout.write(" - ❌\n\n\n");
throw err;
}
await writeMinified(filePath, out).catch(e => {
throw e;
});
break;
default:
stdout.write("\n");
}
} else {
await recursiveMinify(filePath);
}
}
}
}
recursiveMinify(path.join(__dirname, "prebuild-src"));