AdFabConnect / abejs

export function setObjByString(obj, str, val) {

  var keys, key

  //make sure str is a string with length

  if (!str || !str.length || Object.prototype.toString.call(str) !== '[object String]') {

    return false

  }

  if (obj !== Object(obj)) {

      //if it's not an object, make it one 

    obj = {}

  }

  keys = str.split('.')

  while (keys.length > 1) {

    key = keys.shift()

    if (obj !== Object(obj)) {

          //if it's not an object, make it one 

      obj = {}

    }

    if (!(key in obj)) {

          //if obj doesn't contain the key, add it and set it to an empty object 

      obj[key] = {}

    }

    obj = obj[key]

  }

  return obj[keys[0]] = val

}