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Contents
import { Operator } from '../Operator';
import { Subscriber } from '../Subscriber';
import { Subscription, TeardownLogic } from '../Subscription';
import { Observable } from '../Observable';
import { MonoTypeOperatorFunction } from '../interfaces';
/**
* Returns an Observable that mirrors the source Observable, but will call a specified function when
* the source terminates on complete or error.
* @param {function} callback Function to be called when source terminates.
* @return {Observable} An Observable that mirrors the source, but will call the specified function on termination.
* @method finally
* @owner Observable
*/
export function finalize<T>(callback: () => void): MonoTypeOperatorFunction<T> {
return (source: Observable<T>) => source.lift(new FinallyOperator(callback));
}
class FinallyOperator<T> implements Operator<T, T> {
constructor(private callback: () => void) {
}
call(subscriber: Subscriber<T>, source: any): TeardownLogic {
return source.subscribe(new FinallySubscriber(subscriber, this.callback));
}
}
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
class FinallySubscriber<T> extends Subscriber<T> {
constructor(destination: Subscriber<T>, callback: () => void) {
super(destination);
this.add(new Subscription(callback));
}
}
Version data entries
49 entries across 49 versions & 4 rubygems