text: const { src, dest } = require('gulp')
  const terser = require('gulp-terser')
  const cssmin = require('gulp-cssmin')
  const rename = require('gulp-rename')
  
  
  exports.minifyBundleJs = minifyBundleJs
  exports.minifyBundleCss = minifyBundleCss
  
  
  function minifyBundleJs() {
    return src([
      'packages?(-premium)/bundle/*.js',
      '!**/*.min.js' // avoid double minify
    ], { base: '.' })
      .pipe(
        terser({
          output: {
            // preserve FC's leading comment but strip Microsoft tslib's
            // comment that starts with a row of ***
            comments: /^!(?! \*)/
          }
        })
      )
      .pipe(
        rename({ extname: '.min.js' })
      )
      .pipe(dest('.'))
  }
  
  
  function minifyBundleCss() {
    return src([
      'packages?(-premium)/bundle/*.css',
      '!**/*.min.css' // avoid double minify
    ], { base: '.' })
      .pipe(
        cssmin()
      )
      .pipe(
        rename({ extname: '.min.css' })
      )
      .pipe(dest('.'))
  }
  