Iterate through a nested object and replace reserved JSON characters.

iterate.js

const iterate = (obj) => {
  Object.keys(obj).forEach(key => {
    if (typeof obj[key] === 'object') {
      iterate(obj[key])
    } else if (typeof obj[key] === 'string' || obj[key] instanceof String) {
      obj[key] = obj[key].replace(/\n/g,'\\u000a').replace(/"/g,'\\u0022').replace(/'/g,'\\u0027');
    }
  })
}