@witty-services/ngx-common
v9.0.0
Published
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NgxCommon
Informations
:warning: Since version 2.0.3,
ngx-common
andrxjs-common
have been published under@paddls
namespace. We continue to maintain@witty-services
namespace, but now,ngx-common
depends on@paddls/rxjs-common
| Angular
| NgxCommon
|
|--------------------|-------------------|
| 18.0.0
and above | 9.0.0
and above |
| 17.0.0
and above | 8.0.0
and above |
| 16.0.0
and above | 7.0.0
and above |
| 15.0.0
and above | 6.0.0
and above |
| 14.0.0
and above | 5.0.0
and above |
| 13.0.0
and above | 4.0.0
and above |
| 12.0.0
and above | 3.0.0
and above |
| 6.0.0
and above | 1.0.0
and above |
Summary
How to install
npm install --save @paddls/ngx-common
Get Started
@OnAttributeChange
Decorator @OnAttributeChange
allow you to observe a class attribute with an observable.
Usage:
import { takeUntilDestroy, OnAttributeChange } from '@paddls/ngx-common';
import { Observable } from 'rxjs';
class MyComponent {
public attribute: string;
@OnAttributeChange('attribute')
public myAttribute$: Observable<string>; // emit value on each modification of the referent attribute
public constructor() {
this.myAttribute$.pipe(
takeUntilDestroy(this),
).subscribe(() => {
// do some stuff
});
}
}
takeUntilDestroy
takeUntilDestroy
will automatically unsubscribe any RxJS
subscription on component or directive destruction.
Usage:
import { takeUntilDestroy, OnDestroyListener } from '@paddls/ngx-common';
import { interval } from 'rxjs';
@OnDestroyListener()
class MyComponent {
public constructor() {
interval(100).pipe(
takeUntilDestroy(this), // this observable will be unsubscribed automatically on component destruction
).subscribe();
}
}
Error handling
NgxErrorHandlerModule
provides a robust error handling mechanism to handle error through your Angular app.
First, import NgxErrorHandlerModule
in your root module :
import { NgxErrorHandlerModule } from '@paddls/ngx-common';
@NgModule({
imports: [
NgxErrorHandlerModule.forRoot([
MyErrorHandler
]),
]
})
export class AppModule {
}
You can register a list of error handlers in the forRoot
method of the module.
Here is an example of an error handler :
@Injectable()
export class DefaultHttpErrorHandler implements ErrorHandler {
public handle(err: any): Observable<any> {
// DO SOMETHING
return throwError(err);
}
public canHandle(err: any): boolean {
return true; // Filter errors
}
}
You can specify as many handlers as you want. handle()
methods will be called in order each time canHandle()
method
returns true
.
To handle any RxJS
error, simply add the handleError()
operator to your Observable
:
source$.pipe(
handleError()
).subscribe()
Configuration provider
NgxConfigModule
provides a wrapper to inject any app config retrieved by HTTP
into your app. To start, simply import
NgxConfigModule
in your root module :
import { NgxConfigModule } from '@paddls/ngx-common';
@NgModule({
imports: [
NgxConfigModule.forRoot('https://my-config-url.com'),
]
})
export class AppModule {
}
Then, each time you need your app config through your app, inject NgxConfigService
:
import { NgxConfigService } from '@paddls/ngx-common';
@Injectable()
export class MyService {
public constructor(configService: NgxConfigService) {
configService.getConfig('key').subscribe(console.log);
console.log(configService.getConfigSnapshot('key'));
}
}
Local storage service
NgxLocalStorageModule
provides a wrapper to localStorage
API that injects values into RxJS
hot observables each time
a value is updated into the storage.
To start, simply import NgxLocalStorageModule
in your root module :
import { NgxLocalStorageModule } from '@paddls/ngx-common';
@NgModule({
imports: [
NgxLocalStorageModule.forRoot(),
]
})
export class AppModule {
}
Then, use it like this :
import { NgxLocalStorageService } from '@paddls/ngx-common';
@Injectable()
export class MyService {
public constructor(localStorageService: NgxLocalStorageService) {
localStorageService.get('key').subscribe(console.log); // 'value'
localStorageService.set('key', 'value').subscribe(console.log); // 'value'
localStorageService.remove('key');
localStorageService.clear();
}
}
@Log
Decorator @Log
allows you to debug method without modifying internal code.
Usage:
import { Log } from '@paddls/ngx-common';
import { environment } from '../../environment.ts';
class MyClass {
@Log()
public myMethod(): any {
}
@Log(!environment.production) // the log should be disabled on production
public myMethod(): any {
}
@Log(true, 'red') // override default log color
public myMethod(): any {
}
}
new MyClass().myMethod();
// => should log duration, class, method, args and returned value