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Setup for Angular 7 application

Before you start an angular project, we need to set up an environment for angular development.

We need to have NodeJs and NPM (node package manager)  in our system. It is not necessary for Angular development but it makes the development easy. NPM is used to download the libraries and packages we need for the development.

You can check the version of node and npm avaible in your system through command prompt or terminal. Here is the command.

for node version:   node -v 
for npm version:    npm -v

GC02PH6MAG3QDE:my_book himanshusharma$ node -vv10.14.0GC02PH6MAG3QDE:my_book himanshusharma$ npm -v6.7.0

In my system, current version of node is 10.14.0 and npm is 6.7.0 when I am writing this article, yours can be different.

Now we need to install angular/cli using npm. Angular/cli makes it easy to create a angular application that already works, out of the box.

npm install -g @angular/cli 

-g is a flag which installs angular/cli globally in our system, so that we can create new angular application from any path in our system.Once the command executed successfully we can confirm the angular version.

ng v     _                      _                 ____ _     ___    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | | /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|                |___/
Angular CLI: 7.2.0Node: 10.14.0OS: darwin x64Angular:...Package                      Version------------------------------------------------------@angular-devkit/architect    0.12.0@angular-devkit/core         7.2.0@angular-devkit/schematics   7.2.0@schematics/angular          7.2.0@schematics/update           0.12.0rxjs                         6.3.3typescript                   3.2.2

Here we can see, our angular/cli version is 7.2.0

Now we can browse to path where we want to create new angular application through command prompt.And then create new application using command 'ng new <project-name>.
Here I have given my-awesome-app as project name.
It will then prompt if we want routing in our application, I choose yes simply by giving y
Then it asks us to choose stylesheet format which we can choose using up/down arrow key
(I chose SCSS) and hit Enter.
Here is the screen

GC02PH6MAG3QDE:~ himanshusharma$ cd documents/my_book/GC02PH6MAG3QDE:my_book himanshusharma$ ng new my-awesome-app? Would you like to add Angular routing? Yes? Which stylesheet format would you like to use?  CSS❯ SCSS   [   ]  SASS   [   ]  LESS   [     ]  Stylus [ ]REATE my-awesome-app/ (1029 bytes)CREATE my-awesome-app/angular.json (3931 bytes)CREATE my-awesome-app/package.json (1313 bytes)..npm WARN deprecated circular-json@0.5.9: CircularJSON is in maintenance only, flatted is its successor.⸨ ░░░░░░░░░░░░░░░░░⸩ ⠴ fetchMetadata: sill pacote range manifest for asn1@~0.2.3 fetched in 52ms

Then it will start creating folder structure and file which will take a while. Once its done we will get something like this in the end

added 1190 packages from 1186 contributors and audited 41236 packages in 27.237s

Note: Added package number can be different in your system

Now we can browse to application folder(here my-awesome-app) and do 'ng serve' to run the application.

himanshusharma$ cd my-awesome-app/
GC02PH6MAG3QDE:my-awesome-app himanshusharma$ ng serve
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **

Date: 2019-04-22T12:56:13.745Z
Hash: 842f49450cb42ab021df
Time: 6245ms
chunk {main} main.js, (main) 11.5 kB [initial] [rendered]
chunk {polyfills} polyfills.js, (polyfills) 237 kB [initial] [rendered]
chunk {runtime} runtime.js, (runtime) 6.08 kB [entry] [rendered]
chunk {styles} styles.js, (styles) 16.7 kB [initial] [rendered]
chunk {vendor} vendor.js, (vendor) 3.76 MB [initial] [rendered]
ℹ 「wdm」: Compiled successfully.

As it says "Angular Live Development server is listening on localhost:4200, we can browse to http://localhost:4200 and we should see some thing like below:

Hurray !! Our angular project is up,we can start the development.

Thank you


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