webpack-externalize-lodash

1.0.1 verified Sat Apr 25 auth: no javascript

A utility function for webpack that externalizes lodash from your bundle, handling all common import patterns (lodash, lodash-es, lodash-specific submodules like lodash/get, lodash-es/get, lodash.get). Version 1.0.1, stable. Unlike simple externals config like { lodash: '_' }, this package uses webpack's externals function to cover edge cases where lodash is imported in multiple ways by different dependencies, preventing duplicate inclusion. Lightweight, no dependencies.

Common errors

error Cannot find module 'webpack-externalize-lodash' ↓

cause Package not installed or located in node_modules.

fix

Run 'npm install webpack-externalize-lodash' and ensure your webpack config file is in the project root.

error TypeError: externals[i] is not a function ↓

cause The externals array contains a string instead of the required function.

fix

Replace 'webpack-externalize-lodash' with require('webpack-externalize-lodash') in externals.

Warnings

gotcha The package only externalizes lodash; it does not include lodash in your bundle. You must ensure lodash is available as a global (e.g., via CDN or script tag) or included separately. ↓

fix Add a script tag for lodash in your HTML or use a different externals configuration.

gotcha Does not handle lodash/fp imports (e.g., import get from 'lodash/fp/get'). These will still be bundled unless handled separately. ↓

fix Extend externals function manually to cover lodash/fp paths or use a more comprehensive externalization library.

Install

npm install webpack-externalize-lodash

yarn add webpack-externalize-lodash

pnpm add webpack-externalize-lodash

Imports

default
wrong
```
import externalizeLodash from 'webpack-externalize-lodash';
```
correct
```
const externalizeLodash = require('webpack-externalize-lodash');
```
This package provides a CommonJS export, so use require(). ESM import may work in some bundlers but not guaranteed.
default as function in externals array
wrong
```
externals: [ 'webpack-externalize-lodash' ]
```
correct
```
externals: [ require('webpack-externalize-lodash') ]
```
The package returns a function, not a string or object. Do not use string reference.

Quickstart

Shows how to add the externalize utility to webpack externals array to prevent lodash double inclusion.

// webpack.config.js
const externalizeLodash = require('webpack-externalize-lodash');

module.exports = {
  // ... other config
  externals: [
    // your other externals
    externalizeLodash
  ]
};