Unleashing Schematics v7+

Unleashing Schematics v7+

Gerard Sans

@gerardsans

Gerard Sans

@gerardsans

 

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Introduction

Schematics

  • Created by Angular CLI Team
  • Part of Angular Developer Kit

  • Scaffolding Tool

  • Code Generation

  • Independent from Angular

Angular CLI

Features within Angular CLI

  • Configurable prompts

    • ng new myProject

    • ng add @angular/material

  • Angular updates

    • ng update @angular/cli @angular/core​

Usage

ngrx Commands

> ng generate $type $options

> $type: store st, feature f, effect ef, container co
         reducer r, action a, entity en 

> $options: --flat (default) --group --spec

Generate Options

> $name: counter

// same folder no specs
> ng generate action $name
create src/app/counter.actions.ts

// separate actions folder + specs
> ng generate action $name --group --spec
create src/app/actions/counter.actions.ts
create src/app/actions/counter.actions.spec.ts 

// same folder + specs
> ng generate action $name --spec
create src/app/counter.actions.ts
create src/app/counter.actions.spec.ts

ngrx/schematics 

  • Scaffolding templates for ngrx
  • Provides commands for
    • Setting initial Store and Effects
    • Actions, Reducers, Entities, Features
    • Containers (injected Store)
  • Automates creation and registration

Demo

Creating a ngrx App

Transforms

Definitions

  • Collection: Set of schematics (Rules)

    • ​@ngrx/schematics

  • Schematic (Rule): set of actions

    • ​​ng new, ng update

  • Action: transform of the file tree

Add Files

Source

Output

Action

Remove Files

Source

Output

Action

Move File

Source

Output

Action

File Changes and Renames

Source

Output

Action

a

b

c 

c'

Transforms Properties

  • Atomic: All or nothing
  • File Transforms are isolated
  • Code Transforms via AST
  • Composable
    • ​A extends B extends C​

Getting Started

npm install -g @angular-devkit/schematics 
  @angular-devkit/schematics-cli

schematics blank --name=basic

CREATE /basic/README.md 
CREATE /basic/package.json 
CREATE /basic/tsconfig.json 
CREATE /basic/src/collection.json 
CREATE /basic/src/basic/index.ts
CREATE /basic/src/basic/index_spec.ts
app/my.component.ts

Creating an Empty Collection

Demo

schematics schematic --name=sample

CREATE /sample/src/collection.json 
CREATE /sample/src/my-full-schematic/index.ts 
CREATE /sample/src/my-full-schematic/schema.json
CREATE /sample/src/my-full-schematic/files/test2
CREATE /sample/src/my-full-schematic/files/test__INDEX__ 
CREATE /sample/src/my-other-schematic/index.ts
CREATE /sample/src/my-schematic/index.ts

app/my.component.ts

Creating a Sample Collection

Demo

Your First 

Schematics

schematics blank --name=basic
cd basic
npm run build
npm run test

npm link
> usr/local/lib/node_modules/basic -> <path>/basic

schematics --help
schematics .:basic --dry-run=false
app/my.component.ts

Building your Collection: basic

ng new test-basic
cd test-basic
npm link basic
> /test-basic/node_modules/basic 
  -> usr/local/lib/node_modules/basic 
  -> /basic

ng config cli.defaultCollection basic
ng g basic

schematics basic:basic

app/my.component.ts

Testing your Collection: basic

schematics schematic --name=sample
cd sample
npm i
npm run build
npm run test

npm link
> usr/local/lib/node_modules/sample -> <path>/sample

app/my.component.ts

Building your Collection: sample

ng new test-sample
cd test-sample
npm link sample
> /test-sample/node_modules/sample 
  -> usr/local/lib/node_modules/sample 
  -> /sample

ng config cli.defaultCollection sample
ng g my-schematic

schematics sample:my-schematic

app/my.component.ts

Testing your Collection: sample

Wrap-up

Why use Schematics?

  • Better Developer Experience
    • Adopt Best Practices
    • Less boilerplate
    • No manual Setup
  • Consistency within Teams/Projects
    • Follow conventions
  • Reusability

More

github.com/rangle/schematics-angular

@hanslatwork

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@Brocco

Filipe Silva

Hans Larsen

Mike Brocchi

@jakeherringbone

Alex Eagle

Unleashing Angular Schematics (v7+)

By Gerard Sans

Unleashing Angular Schematics (v7+)

In this talk we are going to explore one of the latest additions to the Angular ecosystem. This is angular schematics! We will explore the technology behind the Angular CLI that allows us to scaffold, build, generate and automate repetitive tasks with a simple command. We will explore the different applications of angular schematics with small examples showing its full power.

  • 3,491

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