Redux state management normalizr.js

// fetch api 
{
  posts: [
    {
      id: 88,
      content: 'North Korea News',
      author: {
        id: 41,
        name: 'Kim Jong-un',
      },
    },
    {
      id: 89,
      content: 'USA News',
      author: {
        id: 42,
        name: 'Donald Trump',
      },
    },
  ],
  comments: [
    {
      id: 352,
      post_id: 88,
      body: 'Are you ready for world war 3?',
      author: {
        id: 42,
        name: 'Donald Trump',
      },
    },
  ],
}
// Normalized
{
  posts: {
    postIds: [ 88, 89 ],
    postsById: {
      88: {
        content: 'North Korea News',
        author: 41,
      },
      89: {
        content: 'USA News',
        author: 42,
      },
    },
  },
  comments: {
    commentIds: [ 352 ],
    commentsById: {
      352: {
        post_id: 88,
        body: 'Are you ready for world war 3?',
        author: 42,
      },
    },
  },
  authors: {
    authorsById: {
      41: {
        name: 'Kim Jong-un',
      },
      42: {
        name: 'Donald Trump',
      },
    },
  },
}