update

node_modules/rxjs/operators/mapTo.js

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+"use strict";
+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 __());
+};
+var Subscriber_1 = require('../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
+ */
+function mapTo(value) {
+    return function (source) { return source.lift(new MapToOperator(value)); };
+}
+exports.mapTo = mapTo;
+var MapToOperator = (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 = (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_1.Subscriber));
+//# sourceMappingURL=mapTo.js.map