It should return an array of all the transactions from the book's `borrows` key. However, each transaction should include the related account information and the `returned` key.

s.js

function getBorrowersForBook(book, accounts) {
  let result = [];
  let borrowArray = book.borrows;  
  borrowArray.forEach(borrow=>{
    let account = accounts.find(acc => acc.id === borrow.id);
    let obj = account;
    obj['returned'] =  borrow.returned;
    result.push(obj);
  })
  console.log(result);
  return result.slice(0,10);
}