Immutable Struct.js

import { Struct } from 'immuter'

const struct = Struct({
  title: {
    zh: '哈利·波特与魔法石',
    en: 'Harry Potter and the Philosopher\'s Stone',
  },
  author: 'J. k. rowling',
  tags: ['novel', 'magic'],
})

const struct1 = Struct.clone(struct) // Copy struct, but only modified part will change
struct1.author = 'New Author'
struct1.title.en = 'New Title'
struct1 === struct // false
struct1.author === struct.author // false
struct1.title === struct.title // false
struct1.tags === struct.tags // true
Struct.isStruct(struct) // true