Javascript array to Object with Key

array-to-oject-with-key.js

const peopleArray = [
  { id: 123, name: "dave", age: 23 },
  { id: 456, name: "chris", age: 23 },
  { id: 789, name: "bob", age: 23 },
  { id: 101, name: "tom", age: 23 },
  { id: 102, name: "tim", age: 23 }
];

const arrayToObject = (array, keyField) =>
   array.reduce((obj, item) => {
     obj[item[keyField]] = item
     return obj
   }, {});

const peopleObject = arrayToObject(peopleArray, "id");
console.log(peopleObject[789]);