import fs from 'fs' import path from 'path' import zlib from 'zlib' import uglify from 'uglify-js' import { rollup } from 'rollup' import config from './config' function getSize(code) { return `${(code.length / 1024).toFixed(2)}kb` } function logError(e) { console.log(e) } function blue(str) { return `\x1b[1m\x1b[34m${str}\x1b[39m\x1b[22m` } function write(dest, code, zip) { return new Promise((resolve, reject) => { function report(extra) { console.log(`${blue(path.relative(process.cwd(), dest)) } ${getSize(code) }${extra || ''}`) resolve() } fs.writeFile(dest, code, error => { if (error) return reject(error) if (zip) { zlib.gzip(code, (err, zipped) => { if (err) return reject(err) report(` (gzipped: ${getSize(zipped)})`) }) } else { report() } }) }) } function buildEntry({ input, output }) { const isProd = /min\.js$/.test(output.file) return rollup(input) .then(bundle => bundle.generate(output)) .then(({ code }) => { if (isProd) { const minified = uglify.minify(code, { output: { preamble: output.banner, ascii_only: true, }, }).code return write(output.file, minified, true) } return write(output.file, code) }) } function build(builds) { let built = 0 const total = builds.length const next = () => { const distPath = path.dirname(builds[built].output.file) if (!fs.existsSync(distPath)) { fs.mkdirSync(distPath) } buildEntry(builds[built]).then(() => { built++ if (built < total) { next() } }).catch(logError) } next() } build(config)