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Angular2: Import Lodash into Angular2 application using Typescript

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[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二03 | 时间 2016 | 作者 红领巾 ] 0人收藏点击收藏

Follow below steps to add lodash into your Angular2 app using Typescript 2.0.

Please note I am using Typescript 2.0 and Angular 2.0

Step 1:

Include lodash as the dependencies in package.json file by CMD

> npm install --save lodash Step 2:

Include lodash typings as the dev dependencies in package.json file by CMD for Typescript otherwise you will get error in Visual Studio/Visual Code that “ Cannot find module ‘lodash’ ”

> npm install --save-dev @types/lodash

After above commands your package.json will be updated as below:


Angular2: Import Lodash into Angular2 application using Typescript
Step 3:

As I am using systemJS to load module, so Update the systemjs.config.js file to map lodash. This file provides information to a module loader about where to find application modules, and registers all the necessary packages.

map: {
'lodash': 'npm:lodash'
},
packages: {lodash: { main: 'index.js', defaultExtension: 'js'}
}
Angular2: Import Lodash into Angular2 application using Typescript
Step 4:

Import lodash in your angular component.

import * as _ from "lodash";

Please note that If you use import _ from “lodash”, you will receive following error that “ Module ‘lodash’ has no default expor t”:


Angular2: Import Lodash into Angular2 application using Typescript
Step 5:

Use lodash in your code as per need just like below as I am using _.isEqual(a,b) and IntelliSense is working fine:


Angular2: Import Lodash into Angular2 application using Typescript
Cheers. Happy Coding.

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