Category: Angular2,4,5

Angular 2,4,5 is a TypeScript-based open-source front-end language and used for developing single page web applications.
Now a days Angular js also widely used in developing Hybrid Mobile applications.

Cannot find module 'underscore' || install underscore module in angular 2

You need to install that libraries typings definitions in previous versions, if you want to use an JS library in TypeScript.

In newer version of TypeScript uses @types system. So now you don't need to install typings manually, you can just write this. For first install

And then

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Setup angular2 local development environment

1) Install node js
2) sudo npm install npm -g // install NPM
3) sudo npm install -g typescript // install typescript
4) git clone https://github.com/angular/quickstart.git quickstart // cloning angular2 setup
5) cd quickstart
6) sudo npm install
7) sudo npm start

Via CLI

1) Install node js
2) sudo npm install npm -g // install NPM
3) sudo npm install -g typescript // install typescript
4) npm install -g @angular/cli
5) ng new my-app
6) sudo npm start

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