biobulkbende.org/node_modules/rxjs/_esm2015/operators/finalize.js
2020-09-16 14:23:28 +02:00

33 lines
1.1 KiB
JavaScript

import { Subscriber } from '../Subscriber';
import { Subscription } from '../Subscription';
/**
* 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(callback) {
return (source) => source.lift(new FinallyOperator(callback));
}
class FinallyOperator {
constructor(callback) {
this.callback = callback;
}
call(subscriber, source) {
return source.subscribe(new FinallySubscriber(subscriber, this.callback));
}
}
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
class FinallySubscriber extends Subscriber {
constructor(destination, callback) {
super(destination);
this.add(new Subscription(callback));
}
}
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