quasar

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const
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  fs = require('fs'),
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  path = require('path'),
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  zlib = require('zlib'),
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  { green, blue, red, cyan } = require('chalk')
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function getSize (code) {
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  return (code.length / 1024).toFixed(2) + 'kb'
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}
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module.exports.createFolder = function (folder) {
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  const dir = path.join(__dirname, '..', folder)
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  if (!fs.existsSync(dir)) {
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    fs.mkdirSync(dir)
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  }
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}
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module.exports.writeFile = function (dest, code, zip) {
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  const banner = dest.indexOf('.json') > -1
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    ? red('[json]')
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    : dest.indexOf('.js') > -1
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      ? green('[js]  ')
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      : dest.indexOf('.ts') > -1
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        ? cyan('[ts]  ')
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        : blue('[css] ')
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  return new Promise((resolve, reject) => {
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    function report (extra) {
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      console.log(`${banner} ${path.relative(process.cwd(), dest).padEnd(41)} ${getSize(code).padStart(8)}${extra || ''}`)
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      resolve(code)
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    }
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    fs.writeFile(dest, code, err => {
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      if (err) return reject(err)
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      if (zip) {
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        zlib.gzip(code, (err, zipped) => {
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          if (err) return reject(err)
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          report(` (gzipped: ${getSize(zipped).padStart(8)})`)
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        })
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      }
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      else {
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        report()
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      }
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    })
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  })
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}
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module.exports.readFile = function (file) {
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  return fs.readFileSync(file, 'utf-8')
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}
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module.exports.logError = function (err) {
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  console.error('\n' + red('[Error]'), err)
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  console.log()
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}
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