Brotli compression with Angular CLI

compress.js

const brotli = require('brotli')
const fs = require('fs')

const brotliSettings = {
  extension: 'br',
  skipLarger: true,
  mode: 1, // 0 = generic, 1 = text, 2 = font (WOFF2)
  quality: 10, // 0 - 11,
  lgwin: 12 // default
}

fs.readdirSync('dist/').forEach(file => {
  if (file.endsWith('.js') || file.endsWith('.css') || file.endsWith('.html')) {
    const result = brotli.compress(fs.readFileSync('dist/' + file), brotliSettings)
    fs.writeFileSync('dist/' + file + '.br', result)
  }
})

package.json (extract)

{
  "name": "my-ng-cli-app",
  "scripts": {
    "build-prod": "ng build --prod && node compress.js"
  },
}