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Angular CLI

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Angular CLI

i Angular CLI makes it easy to start with any Angular project. Angular CLI comes with commands that help us create and start on our project very fast. It has commands to create a project, a component and services, change the port, etc. This tutorial is designed for software programmers who want to learn the basics of Angular CLI and its concepts in a simple and easy manner. This tutorial will give you enough understanding on the various functionalities of Angular CLI with suitable examples. Before proceeding with this tutorial, you should have a basic understanding of HTML, CSS, JavaScript, Typescript, and Document Object Model (DOM).

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Angular CLI

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About the Tutorial ............................................................................................................................................ i

Audience ........................................................................................................................................................... i

Prerequisites ..................................................................................................................................................... i

Copyright & Disclaimer ..................................................................................................................................... i

Table of Contents ............................................................................................................................................ ii

1. Angular CLI - Overview ............................................................................................................................. 1

Commands for Angular 4 ................................................................................................................................. 1

Download Node.js archive ............................................................................................................................... 3

Installation on UNIX/Linux/Mac OS X, and SunOS........................................................................................... 3

Installation on Windows .................................................................................................................................. 4

Angular CLI

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Angular CLI

1 Angular command-line interface (CLI) makes it easy to start with any Angular project. It comes with commands that help us create and start on our project very fast. Let us now go through the commands available to create a project, a component and services, change the port, etc. To work with Angular CLI, we need to have it installed on our system. Let us use the following command for the same: npm install -g @angular/cli To create a new project, we can run the following command in the command line and the project will be created. ng new PROJECT-NAME cd PROJECT-NAME ng serve // ng serve // will compile and you can see the output of your project in the browser: http://localhost:4200/

4200 is the default port used when a new project is created. You can change the port with

the following command: ng serve --host 0.0.0.0 --port 4201 The following table lists down a few important commands which are required while working with the Angular 4 projects.

Sr.No Commands & Description

1 Component

ng g component new-component

2 Directive

ng g directive new-directive

3 Pipe

1. Angular CLI - Overview

Angular CLI

2 ng g pipe new-pipe

4 Service

ng g service new-service

5 Module

ng g module my-module Whenever a new module, a component, or a service is created, the reference of the same is updated in the parent module app.module.ts.

Angular CLI

3 To work with Angular CLI, we need to have Node installed on our system. Let us understand about the environment setup required for Angular CLI in detail. Download latest version of Node.js installable archive file from Node.js Downloads, which is available at https://nodejs.org/download/. At the time of writing this tutorial, the versions available on different OS are listed below:

OS Archive name

Windows node-v6.3.1-x64.msi

Linux node-v6.3.1-linux-x86.tar.gz

Mac node-v6.3.1-darwin-x86.tar.gz

SunOS node-v6.3.1-sunos-x86.tar.gz

Based on your OS architecture, download and extract the archive node-v6.3.1- osname.tar.gz into /tmp, and then, finally move extracted files into /usr/local/nodejs directory.

For example:

$ cd /tmp $ wget http://nodejs.org/dist/v6.3.1/node-v6.3.1-linux-x64.tar.gz $ tar xvfz node-v6.3.1-linux-x64.tar.gz $ mkdir -p /usr/local/nodejs $ mv node-v6.3.1-linux-x64/* /usr/local/nodejs Add /usr/local/nodejs/bin to the PATH environment variable.

OS Output

Linux export PATH=$PATH:/usr/local/nodejs/bin

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Mac export PATH=$PATH:/usr/local/nodejs/bin

FreeBSD export PATH=$PATH:/usr/local/nodejs/bin

Use the MSI file and follow the prompts to install the Node.js. By default, the installer uses the Node.js distribution in C:\Program Files\nodejs. The installer should set the C:\Program Files\nodejs\bin directory in windows PATH environment variable. Restart any open command prompts for the change to take effect.

Verify installation: Executing a File

Create a js file named main.js on your machine (Windows or Linux) having the following code: /* Hello, World! program in node.js */ console.log("Hello, World!") The link for live demo is https://www.tutorialspoint.com/execute_nodejs_online.php. Now, execute main.js file using Node.js interpreter to see the result: $ node main.js If everything is fine with your installation, this should produce the following result:

Hello, World!

Now, the Node is installed. You can run the following command to install Angular CLI. npm install -g @angular/cli

Verify the installation

Now, run the following command to see the result:

$ ng --version If everything is fine with your installation, this should produce the following result: _ _ ____ _ ___ / \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _| / ? \ | '_ \ / _` | | | | |/ _` | '__| | | | | | | / ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | | /_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___| |___/

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Angular CLI: 9.1.0

Node: 12.16.1

OS: win32 x64

Angular:

Ivy Workspace:

Package Version

@angular-devkit/architect 0.901.0 @angular-devkit/core 9.1.0 @angular-devkit/schematics 9.1.0 @schematics/angular 9.1.0 @schematics/update 0.901.0 rxjs 6.5.4 On Windows, in case of ng being not recognised as internal or external command, update the system path variable to include the following path.

C:\Users\\AppData\Roaming\npm

Angular CLI

6 This chapter explains the syntax, options of ng version command along with an example.

Syntax

The syntax for ng version command is as follows:

ng version [options] ng v [options] ng version command shows the Angular CLI version installed.

Options

Options are optional parameters.

Sr.No. Option & Syntax Description

1 --help=

true|false|json|JSON Shows a help message for this command in the console.

Default: false

Example

An example for ng version command is given below:

\>Node ng version _ _ ____ _ ___ / \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _| / ? \ | '_ \ / _` | | | | |/ _` | '__| | | | | | | / ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | | /_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___| |___/

Angular CLI: 9.1.0

Node: 12.16.1

Angular CLI

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OS: win32 x64

Angular:

Ivy Workspace:

Package Version

@angular-devkit/architect 0.901.0 @angular-devkit/core 9.1.0 @angular-devkit/schematics 9.1.0 @schematics/angular 9.1.0 @schematics/update 0.901.0 rxjs 6.5.4

Angular CLI

8 This chapter explains the syntax, argument and options of ng new command along with an example.

Syntax

The syntax for ng new command is as follows:

ng new [options] ng n [options] ng new command creates a workspace of given name with a default Angular Application. It provides interactive prompts to set optional configurations. All prompts have default values to choose.

Argument

The argument for ng new command is as follows:

Sr.No. Argument & Syntax Description

1 The name of the new workspace and initial project.

Options

Options are optional parameters.

Sr.No. Option & Syntax Description

1 --collection=collection A collection of schematics

to use in generating the initial app.

Aliases: -c.

2 --commit=true|false Initial git repository

commit information.

Default: true.

3 --createApplication=true|false When true (the default),

creates a new initial app project in the src folder of the new workspace. When false, creates an empty

Angular CLI

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Default: true.

4 --defaults=true|false When true, disables

interactive input prompts for options with a default.

5 --directory=directory The directory name to

create the workspace in.

6 --dryRun=true|false When true, runs through

and reports activity without writing out results.

Default: false.

Aliases: -d.

7 --force=true|false When true, forces

overwriting of existing files.

Default: false.

Aliases: -f.

8 --help=true|false|json|JSON Shows a help message for

this command in the console.

Default: false.

9 --inlineStyle=true|false When true, includes styles

inline in the component

TS file. By default, an

external styles file is created and referenced in the component TS file.

Default: false.

10 --inlineStyle=true|false When true, includes styles

inline in the component

Angular CLI

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TS file. By default, an

external styles file is created and referenced in the component TS file.

Default: false.

Aliases: -t.

11 --interactive=true|false When false, disables

interactive input prompts.

12 --minimal=true|false When true, creates a

project without any testing frameworks. (Use for learning purposes only.)

Default: false.

13 --newProjectRoot=newProjectRoot The path where new

projects will be created, relative to the new workspace root.

Default: projects.

14 --packageManager=npm|yarn|pnpm|cnpm The package manager

used to install dependencies.

15 --prefix=prefix The prefix to apply to

generated selectors for the initial project.

Default: app.

Aliases: -p.

16 --routing=true|false When true, generates a

routing module for the initial project.

17 --skipGit=true|false When true, does not

initialize a git repository.

Default: false.

Aliases: -g.

Angular CLI

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18 --skipInstall=true|false When true, does not

install dependency packages.

Default: false.

19 --skipTests=true|false When true, does not

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