Calculate rough size of an object in javascript (bytes)

object_byte_size

  roughSizeOfObject: (object) ->
    objectList = []
    stack = [object]
    bytes = 0
    while stack.length
      value = stack.pop()
      if typeof value is "boolean"
        bytes += 4
      else if typeof value is "string"
        bytes += value.length * 2
      else if typeof value is "number"
        bytes += 8
      else if typeof value is "object" and objectList.indexOf(value) is -1
        objectList.push value
        for i of value
          stack.push value[i]
    bytes