javascript - Lodash 在 Webpack 中安装指南页面

Question

当我看this时他们使用 npm install --save lodash 来安装 lodash。但当我看 this页面，package.json 如下所示:

{
  "name": "webpack-demo",
  "version": "1.0.0",
  "description": "",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  ===> "devDependencies": { <===
    "webpack": "^4.0.1",
    "webpack-cli": "^2.0.9",
    "lodash": "^4.17.5" <- ???
  }
}

我错过了什么吗？

Answer 1

No need to get confused. It's pretty simple.

use below command if you need to lodash in the production

npm install lodash --save

use below command if you don't need to lodash in the production

npm install lodash --save-dev

Once you are done. lodash's functions will be available globally. If you get any error like _ is not defined. Then you can import lodash like this

import _ from 'lodash'; OR let _ = require('lodash')