| /** PURE_IMPORTS_START .._Observable,.._util_noop PURE_IMPORTS_END */ |
| var __extends = (this && this.__extends) || function (d, b) { |
| for (var p in b) |
| if (b.hasOwnProperty(p)) |
| d[p] = b[p]; |
| function __() { this.constructor = d; } |
| d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); |
| }; |
| import { Observable } from '../Observable'; |
| import { noop } from '../util/noop'; |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @extends {Ignored} |
| * @hide true |
| */ |
| export var NeverObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) { |
| __extends(NeverObservable, _super); |
| function NeverObservable() { |
| _super.call(this); |
| } |
| /** |
| * Creates an Observable that emits no items to the Observer. |
| * |
| * <span class="informal">An Observable that never emits anything.</span> |
| * |
| * <img src="./img/never.png" width="100%"> |
| * |
| * This static operator is useful for creating a simple Observable that emits |
| * neither values nor errors nor the completion notification. It can be used |
| * for testing purposes or for composing with other Observables. Please note |
| * that by never emitting a complete notification, this Observable keeps the |
| * subscription from being disposed automatically. Subscriptions need to be |
| * manually disposed. |
| * |
| * @example <caption>Emit the number 7, then never emit anything else (not even complete).</caption> |
| * function info() { |
| * console.log('Will not be called'); |
| * } |
| * var result = Rx.Observable.never().startWith(7); |
| * result.subscribe(x => console.log(x), info, info); |
| * |
| * @see {@link create} |
| * @see {@link empty} |
| * @see {@link of} |
| * @see {@link throw} |
| * |
| * @return {Observable} A "never" Observable: never emits anything. |
| * @static true |
| * @name never |
| * @owner Observable |
| */ |
| NeverObservable.create = function () { |
| return new NeverObservable(); |
| }; |
| NeverObservable.prototype._subscribe = function (subscriber) { |
| noop(); |
| }; |
| return NeverObservable; |
| }(Observable)); |
| //# sourceMappingURL=NeverObservable.js.map |