ahtcx

// ⚠ IMPORTANT: this is old and doesn't work for many different edge cases but I'll keep it as-is for any of you want it
// ⚠ IMPORTANT: you can find more robust versions in the comments or use a library implementation such as lodash's `merge`

// Merge a `source` object to a `target` recursively
const merge = (target, source) => {
  // Iterate through `source` properties and if an `Object` set property to merge of `target` and `source` properties
  for (const key of Object.keys(source)) {
    if (source[key] instanceof Object) Object.assign(source[key], merge(target[key], source[key]))
  }

hboylan

const stream = require('stream')
const readline = require('readline')
const AWS = require('aws-sdk')
const S3 = new AWS.S3()

// read S3 file by line
function createReadline(Bucket, Key) {

    // s3 read stream
    const input = S3