4. What is Lodash?

Lodash is a JavaScript library that provides many useful functions for manipulating arrays, objects, and other data types. For example, the _.chunk(array, size) function splits an array into smaller arrays of a specified size:

const _ = require('lodash');
const result = _.chunk(['a', 'b', 'c', 'd'], 2);
console.log(result); // [['a', 'b'], ['c', 'd']]