How to Import Lodash Libraries in JavaScript ?

Lodash is a popular JavaScript utility library that provides a wide range of functions for simplifying common programming tasks such as manipulating arrays, objects, strings, and more.

Below are the various methods to import Lodash Libraries in JavaScript:

Importing individual methods directly from Lodash

This approach involves importing specific methods directly from the lodash library using destructuring syntax. It allows developers to only import the methods they need, reducing the overall bundle size.

import { methodName } from 'lodash';

Example:

import { map, filter } from ‘lodash’;

Importing the entire lodash library

Developers can import the entire lodash library, giving access to all lodash methods. While convenient, this approach may increase bundle size unnecessarily if only a few methods are needed.

import _ from 'lodash';

Example:

import _ from ‘lodash’;

Importing lodash methods using the lodash-es package

The lodash-es package provides ES module versions of lodash methods, allowing for tree-shaking when using modern bundlers like webpack or Rollup. This can help optimize bundle size by excluding unused methods.

import { methodName } from 'lodash-es';

Example:

import { map, filter } from ‘lodash-es’;

Importing lodash methods as per method packages

Lodash offers per-method packages for finer control over imports. Developers can cherry-pick specific methods by installing and importing them individually. This approach can be beneficial for optimizing bundle size in projects with strict size constraints.

import methodName from 'lodash/methodName';

Example:

import map from ‘lodash/map’;

import filter from ‘lodash/filter’;

Using complementary tools like futil-js alongside lodash

futil-js is a set of functional utilities designed to complement lodash. Developers can use futil-js alongside lodash to enhance functional programming capabilities and streamline development.

import { methodName } from 'futil-js';
import _ from 'lodash';

Example:

import { map, filter } from ‘futil-js’;

import _ from ‘lodash’;