message: fix(ionic4): fix fs
diff: @@ -5,7 +5,7 @@ fs.readFile(f, 'utf8', function(err, data) {
  if (err) {
  return console.log(err)
  }
  - var result = data.replace(/node: false/g, 'node: {crypto: true, stream: true}')
  + var result = data.replace(/node: false/g, `node: {crypto: true, stream: true, fs: 'empty'}`)
  fs.writeFile(f, result, 'utf8', function(err) {
  if (err) return console.log(err)
  