say I have two arrays:

authors = [
  {
    name: 'Robert Martin',
    id: "afa51ab0-344d-11e9-a414-719c6709cf3e",
    born: 1952,
  },
  {
    name: 'Martin Fowler',
    id: "afa5b6f0-344d-11e9-a414-719c6709cf3e",
    born: 1963
  }
]

let books = [
  {
    title: 'Clean Code',
    published: 2008,
    author: 'Robert Martin',
    id: "afa5b6f4-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring']
  },
  {
    title: 'Agile software development',
    published: 2002,
    author: 'Robert Martin',
    id: "afa5b6f5-344d-11e9-a414-719c6709cf3e",
    genres: ['agile', 'patterns', 'design']
  },
  {
    title: 'Refactoring, edition 2',
    published: 2018,
    author: 'Martin Fowler',
    id: "afa5de00-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring']
  }
]

const Book = require('./controllers/book')

const Author = require('./controllers/author')

using mongoose object schema, book object's author property wants to be populated with complete author object if book.author === author.name.

like this:

{
    title: 'Clean Code',
    published: 2008,
    author: {
               name: 'Robert Martin',
               id: "afa51ab0-344d-11e9-a414-719c6709cf3e",
               born: 1952,
               },
    id: "afa5b6f4-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring']
  },

I have tried this:

books.forEach(book => {
const bookAuthor = authors.find(author => book.author === author.name).name
Book.findOne({author: bookAuthor}).populate('author') }

no success, somehow js is hard to manipulate data structure on the fly than Python I feel. Could you help?