removeJunk.js

const split = require('split2')
const filter = require('through2-filter')
const map = require('through2-map')
const pumpify = require('pumpify')

process.env.FORCE_COLOR = '1'

module.exports = () => {
  const filterStream = filter({ wantStrings: true }, chunk => {
    // Example: 2018-08-10 22:48:42.866 Electron[90311:4883863] *** WARNING: Textured window <AtomNSWindow: 0x7fb75f68a770>
    if (
      /\d+-\d+-\d+ \d+:\d+:\d+\.\d+ Electron(?: Helper)?\[\d+:\d+] /.test(chunk)
    ) {
      return false
    }

    // Example: [90789:0810/225804.894349:ERROR:CONSOLE(105)] "Uncaught (in promise) Error: Could not instantiate: ProductRegistryImpl.Registry", source: chrome-devtools://devtools/bundled/inspector.js (105)
    if (/\[\d+:\d+\/|\d+\.\d+:ERROR:CONSOLE\(\d+\)\]/.test(chunk)) {
      return false
    }

    return true
  })

  return pumpify(split(), filterStream, map(chunk => `${chunk}\n`))
}