Angular News Tuesday, June 5
- How to build a library for Angular apps? – Tomek Sułkowski – Medium
- Building Custom Elements/Web Components with Angular 6
- NgRx — Best Practices for Enterprise Angular Applications
- Lets follow a typical scenario: we are going to create a library that provides a service, a component and some interfaces.
- As with a typical Angular project, you dont have to create a component by handits what the CLI is for: – ng generate component poster –project=tvmazeWe just needed to tell the CLI to create the poster inside our tvmaze library.
- Use thelibraryTo try our library out, we need to do what we always would with 3rd party extensiondefine as a dependency in the imports section of the apps NgModule: – The thing to note here is that we dont import the class by a relative path to the tvmaze directory,…
- When weve generated the library (ng generate library tvmaze ) Angular CLI modified the tsconfig.json in the root of our project by adding tvmaze to the paths entry.
- Publish thelibraryTo make the library available on npm all you need to do is create a production build, and run npm publish command from the projects dist directory: – ng build tvmaze –prod – cd dist/tvmaze – npm publishIf you havent published anything before, you will need to create an…
- Install Angular CLI 6 and initialize theproject – npm i -g @angular/cli – ng new elements-demo –prefix customWere not doing anything special yet, so all the normal ng new parameters apply, you could add sass or anything to the mix, but here well stop at setting a custom prefix to,…
- Create a component – Lets create one with Input and Output to see how they translate to custom elements that are understood by browsers: – ng g component button –inline-style –inline-template -v NativeWe use ViewEncapsulation.Native so that the styles are bundled with the template and the components class into one…
- After adding some style template our button.component.ts looks like this: – You can copy this code from: Registering component inNgModule – This is the vital part: we use the Angulars createCustomElement function to create a class that can be used with browsers native customElements.define functionality.
- Takes the component factorys inputs and outputs to convert them to the proper custom element API and add hooks to input changes.The configurations injector is the initial injector set on the class, and used by default for each created instance.This behavior can be overridden with the static property to affect…
- In summary weve: – added elements-relared libraries with ng add command – registered the Angular component as custom element in a module – combined build artifacts into one file and gzipped them – – Not that difficult, right?
@AngularJS_News: Building Custom Elements/Web Components with Angular 6 🔗 https://t.co/qcR6wuXQKv
- Feature store modules will be imported into the Root Store Module allowing for a single root store module to be imported into your applications main App Module.
- Generate RootState interface to represent the entire state of your application using the Angular CLI: – – PLEASE NOTE: You will come back later on and add to this interface each feature module as a property.
- Create feature store modules as proper Angular NgModules that bundle together feature slices of your store, including state, actions, reducer, selectors, and effects.
- EffectsCreate an effects.ts file in the directory with the following: – – Now that we have created our feature module, either Entity or Standard typed above, we need to import the parts (state, actions, reducer, effects, selectors) into the Angular NgModule for the feature.
- ts barrel export for your store with the following: – – Now that we have built our Root Store Module, composed of Feature Store Modules, lets add it to the main app.module.ts and show just how neat and clean the wiring up process is.
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