84 lines
2.9 KiB
JavaScript
84 lines
2.9 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var Subscriber_1 = require('../Subscriber');
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var noop_1 = require('../util/noop');
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/**
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* Returns a mirrored Observable of the source Observable, but modified so that the provided Observer is called
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* for every item emitted by the source.
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* This operator is useful for debugging your observables for the correct values or performing other side effects.
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* @param {Observer|function} [nextOrObserver] a normal observer callback or callback for onNext.
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* @param {function} [error] callback for errors in the source.
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* @param {function} [complete] callback for the completion of the source.
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* @reurns {Observable} a mirrored Observable with the specified Observer or callback attached for each item.
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*/
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function _do(nextOrObserver, error, complete) {
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var next;
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if (nextOrObserver && typeof nextOrObserver === 'object') {
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next = nextOrObserver.next;
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error = nextOrObserver.error;
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complete = nextOrObserver.complete;
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}
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else {
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next = nextOrObserver;
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}
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return this.lift(new DoOperator(next || noop_1.noop, error || noop_1.noop, complete || noop_1.noop));
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}
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exports._do = _do;
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var DoOperator = (function () {
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function DoOperator(next, error, complete) {
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this.next = next;
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this.error = error;
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this.complete = complete;
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}
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DoOperator.prototype.call = function (subscriber) {
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return new DoSubscriber(subscriber, this.next, this.error, this.complete);
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};
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return DoOperator;
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}());
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var DoSubscriber = (function (_super) {
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__extends(DoSubscriber, _super);
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function DoSubscriber(destination, next, error, complete) {
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_super.call(this, destination);
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this.__next = next;
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this.__error = error;
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this.__complete = complete;
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}
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// NOTE: important, all try catch blocks below are there for performance
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// reasons. tryCatcher approach does not benefit this operator.
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DoSubscriber.prototype._next = function (value) {
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try {
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this.__next(value);
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}
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catch (err) {
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this.destination.error(err);
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return;
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}
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this.destination.next(value);
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};
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DoSubscriber.prototype._error = function (err) {
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try {
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this.__error(err);
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}
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catch (err) {
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this.destination.error(err);
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return;
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}
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this.destination.error(err);
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};
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DoSubscriber.prototype._complete = function () {
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try {
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this.__complete();
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}
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catch (err) {
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this.destination.error(err);
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return;
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}
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this.destination.complete();
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};
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return DoSubscriber;
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}(Subscriber_1.Subscriber));
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//# sourceMappingURL=do.js.map
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