123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293
const fs = require('fs')const path = require('path')const zlib = require('zlib')const terser = require('terser')const rollup = require('rollup')const configs = require('./configs')
if (!fs.existsSync('dist')) {  fs.mkdirSync('dist')}
build(Object.keys(configs).map((key) => configs[key]))
async function build(builds) {  for (const entry of builds) {    try {      await buildEntry(entry)    } catch (err) {      logError(err)    }  }}
async function buildEntry(config) {  const output = config.output  const { file, banner } = output  const isProd = /(min|prod)\.js$/.test(file)
  try {    let bundle = await rollup.rollup(config)    let {      output: [{ code }]    } = await bundle.generate(output)
    if (isProd) {      const minified =        (banner || '') +        terser.minify(code, {          toplevel: true,          output: {            ascii_only: true          },          compress: {            pure_funcs: ['makeMap']          }        }).code      return write(file, minified, true)    } else {      return write(file, code)    }  } catch (err) {    throw new Error(err)  }}
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, (err) => {      if (err) return reject(err)      if (zip) {        zlib.gzip(code, (err, zipped) => {          if (err) return reject(err)          report(` (gzipped: ${getSize(zipped)})`)        })      } else {        report()      }    })  })}
function getSize(code) {  return (code.length / 1024).toFixed(2) + 'kb'}
function logError(e) {  console.error(e)}
function blue(str) {  return `\x1b[1m\x1b[34m${str}\x1b[39m\x1b[22m`}