Redact phone and email from large json file

readact-json-file.js

const fs = require('fs')

const emailRegex = /@[A-z0-9\.-]{3,50}/g
const phoneRegex = /\+[\d\s-]{4}/g
const liveRegex = /live/g

const file = '/path/to/big/json/file.json'
const outputFile = '/path/to/output/redacted.json'
const inputStream = fs.createReadStream(file, {encoding: 'utf8'})
const outputStream = fs.createWriteStream(outputFile, {encoding: 'utf8'})


inputStream.on('data', (data) => {
  outputStream.write(
    data.replace(emailRegex, '@example.com')
        .replace(phoneRegex, '+1555')
        .replace(liveRegex, 'staging')
  )
})

inputStream.on('end', () => process.exit(0))

fs.watchFile(outputFile, () => {
    fs.stat(outputFile, (err, stats) => {
        console.log((stats.size/1000000000) + 'GB')
    })
})