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Better Angular Architectures With Angular Libraries

Better Angular Architectures With Angular Libraries

Angular offers many possibilities when it comes to the separation and architecture of your application. There is often code that you not only want to reuse within your application, but also make available to other applications in your organization or over the web via package managers like npm. This is where Angular's libraries come into play. In this talk, Fabian Gosebrink will highlight how Angular libraries are created, what the Angular Package Format is good for, and how we can move code from an existing application into an Angular library to reuse the code across multiple applications. This makes maintainability and architecture of Angular applications a breeze.

Fabian Gosebrink

October 13, 2022
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  37. @NgModule({
    declarations: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  38. import { XyzModule } from ‘folder’;
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  39. MyComponent
    import { XyzModule } from ‘folder’;
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  40. MyComponent
    import { XyzModule } from ‘folder’;
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  41. MyComponent
    import { XyzModule } from ‘folder’;
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  42. @NgModule({
    imports: [
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  43. import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent

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  44. import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent
    public-api.ts
    export * from ‘./xyz.module’

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  45. import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent
    public-api.ts
    MyComponent
    export * from ‘./xyz.module’

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  46. import { XyzModule, MyComponent } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent
    public-api.ts
    MyComponent
    export * from ‘./xyz.module’

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  47. import { XyzModule, MyComponent } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent
    public-api.ts
    MyComponent
    export * from ‘./xyz.module’

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  48. import { XyzModule, MyComponent } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    @NgModule({
    declarations: [MyComponent],
    exports: [MyComponent]
    })
    export class XyzModule
    MyComponent
    public-api.ts
    MyComponent
    export * from ‘./xyz.module’
    export * from ‘./my.component’

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  49. @NgModule({
    providers: [MyService]
    })
    export class XyzModule
    MyService

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  50. @NgModule({
    providers: [MyService]
    })
    export class XyzModule
    MyService
    public-api.ts
    export * from ‘./xyz.module’

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  51. @NgModule({
    providers: [MyService]
    })
    export class XyzModule
    MyService
    public-api.ts
    import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    export * from ‘./xyz.module’

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  52. @NgModule({
    providers: [MyService]
    })
    export class XyzModule
    MyService
    public-api.ts
    import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    import { MyService } from ‘lib’;
    constructor(private srv: MyService) {}
    export * from ‘./xyz.module’

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  53. @NgModule({
    providers: [MyService]
    })
    export class XyzModule
    MyService
    public-api.ts
    import { XyzModule } from ‘lib’
    @NgModule({
    imports: [
    XyzModule
    ]})
    export class AppModule {}
    import { MyService } from ‘lib’;
    constructor(private srv: MyService) {}
    export * from ‘./xyz.module’
    export * from ‘./my.service’

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  54. @NgModule({
    providers: []
    })
    export class XyzModule
    @Injectable({ providedIn: ‘root’ })
    MyService
    public-api.ts
    @NgModule({
    imports: [
    ]})
    export class AppModule {}
    export * from ‘./xyz.module’

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  55. @NgModule({
    providers: []
    })
    export class XyzModule
    @Injectable({ providedIn: ‘root’ })
    MyService
    public-api.ts
    @NgModule({
    imports: [
    ]})
    export class AppModule {}
    import { MyService } from ‘lib’;
    constructor(private srv: MyService) {}
    export * from ‘./xyz.module’

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  56. @NgModule({
    providers: []
    })
    export class XyzModule
    @Injectable({ providedIn: ‘root’ })
    MyService
    public-api.ts
    @NgModule({
    imports: [
    ]})
    export class AppModule {}
    import { MyService } from ‘lib’;
    constructor(private srv: MyService) {}
    export * from ‘./xyz.module’
    export * from ‘./my.service’

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  57. View Slide

  58. $ ng new demorepo –-createApplication=false
    $ cd demorepo
    $ ng generate app my-real-app
    $ ng generate library my-lib

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  61. $ ng build my-lib

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  62. $ ng build my-lib --watch

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  64. $ ng lint my-lib

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  65. $ ng test my-lib

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  66. $ ng test my-lib –-watch=false

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  75. $ npm install my-lib/dist

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  76. $ npm link my-lib/dist

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  77. $ cd my-lib/dist
    $ npm pack
    $ npm install my-lib/dist/package.tgz

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  81. {
    "name": "angular-rating",
    "version": "0.0.1",
    "peerDependencies": {
    "@angular/common": "^12.2.0",
    "@angular/core": "^12.2.0"
    },
    "dependencies": {
    "tslib": "^2.3.0"
    }
    }

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  82. {
    "name": "angular-rating",
    "version": "0.0.1",
    "peerDependencies": {
    "@angular/common": "^10.1.6",
    "@angular/core": "^10.1.6"
    },
    "dependencies": {
    "tslib": "^2.0.0"
    }
    }

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  83. ..
    https://semver.org/

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  84. {
    "name": "@fabiangosebrink/angular-rating",
    "version": "0.0.1",
    "peerDependencies": {
    "@angular/common": "^10.1.6",
    "@angular/core": "^10.1.6"
    },
    "dependencies": {
    "tslib": "^2.0.0"
    }
    }

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  88. $ npx create-nx-workspace@latest

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  89. $ npx create-nx-workspace@latest
    $ nx generate @nrwl/angular:app my-first-app
    $ nx generate @nrwl/angular:library

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