How to Import a Single Lodash Function?

Question

Using webpack, I\'m trying to import isEqual since lodash seems to be importing everything. I\'ve tried doing the following with no success:

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Answer 1

Lodash lists a couple of options in their README:

• babel-plugin-lodash

  • Install lodash and the babel plugin:

  $ npm i --save lodash
  $ npm i --save-dev babel-plugin-lodash @babel/cli @babel/preset-env
  

  • Add this to your .babelrc

  {
    "plugins": ["lodash"],
    "presets": [["@babel/env", { "targets": { "node": 6 } }]]
  }
  

  • Transforms this

  import _ from 'lodash'
  import { add } from 'lodash/fp'
  
  const addOne = add(1)
  _.map([1, 2, 3], addOne)
  

  Roughly to this:

  import _add from 'lodash/fp/add'
  import _map from 'lodash/map'
  
  const addOne = _add(1)
  _map([1, 2, 3], addOne)
  

• lodash-webpack-plugin

  • Install lodash and webpack plugin:

  $ npm i --save lodash
  $ npm i --save-dev lodash-webpack-plugin babel-core babel-loader babel-plugin-lodash babel-preset-env webpack
  

  • Configure your webpack.config.js:

  var LodashModuleReplacementPlugin = require('lodash-webpack-plugin');
  var webpack = require('webpack');
  
  module.exports = {
    'module': {
      'rules': [{
        'use': 'babel-loader',
        'test': /\.js$/,
        'exclude': /node_modules/,
        'options': {
          'plugins': ['lodash'],
          'presets': [['env', { 'modules': false, 'targets': { 'node': 4 } }]]
        }
      }]
    },
    'plugins': [
      new LodashModuleReplacementPlugin,
      new webpack.optimize.UglifyJsPlugin
    ]
  };
  

• lodash-es using the lodash cli

  • $ lodash modularize exports=es -o ./