| /** PURE_IMPORTS_START .._Subscriber 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 { Subscriber } from '../Subscriber'; |
| /** |
| * Emits the given constant value on the output Observable every time the source |
| * Observable emits a value. |
| * |
| * <span class="informal">Like {@link map}, but it maps every source value to |
| * the same output value every time.</span> |
| * |
| * <img src="./img/mapTo.png" width="100%"> |
| * |
| * Takes a constant `value` as argument, and emits that whenever the source |
| * Observable emits a value. In other words, ignores the actual source value, |
| * and simply uses the emission moment to know when to emit the given `value`. |
| * |
| * @example <caption>Map every click to the string 'Hi'</caption> |
| * var clicks = Rx.Observable.fromEvent(document, 'click'); |
| * var greetings = clicks.mapTo('Hi'); |
| * greetings.subscribe(x => console.log(x)); |
| * |
| * @see {@link map} |
| * |
| * @param {any} value The value to map each source value to. |
| * @return {Observable} An Observable that emits the given `value` every time |
| * the source Observable emits something. |
| * @method mapTo |
| * @owner Observable |
| */ |
| export function mapTo(value) { |
| return function (source) { return source.lift(new MapToOperator(value)); }; |
| } |
| var MapToOperator = /*@__PURE__*/ (/*@__PURE__*/ function () { |
| function MapToOperator(value) { |
| this.value = value; |
| } |
| MapToOperator.prototype.call = function (subscriber, source) { |
| return source.subscribe(new MapToSubscriber(subscriber, this.value)); |
| }; |
| return MapToOperator; |
| }()); |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @ignore |
| * @extends {Ignored} |
| */ |
| var MapToSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) { |
| __extends(MapToSubscriber, _super); |
| function MapToSubscriber(destination, value) { |
| _super.call(this, destination); |
| this.value = value; |
| } |
| MapToSubscriber.prototype._next = function (x) { |
| this.destination.next(this.value); |
| }; |
| return MapToSubscriber; |
| }(Subscriber)); |
| //# sourceMappingURL=mapTo.js.map |