What utility libraries (like Lodash) have you used?

In my experience as a frontend developer, I have used several utility libraries that help simplify working with data and code:

• Lodash — the most popular library for working with arrays, objects, and functions. Very useful for deep cloning, debouncing, throttling, and working with collections.

import _ from 'lodash';

const arr = [1, 2, 3, 4];
const doubled = _.map(arr, n => n * 2);

• date-fns — for convenient date handling, formatting, and calculations.

• Ramda — a functional library if you need to write more declarative and clean code.

• Axios — although not a utility library in the traditional sense, it is often used for convenient HTTP requests.

Using such libraries allows writing cleaner, more readable, and maintainable code, avoiding reinventing standard functions.