update

node_modules/rxjs/operator/concatMapTo.js

@@ -0,0 +1,64 @@
+"use strict";
+var concatMapTo_1 = require('../operators/concatMapTo');
+/* tslint:enable:max-line-length */
+/**
+ * Projects each source value to the same Observable which is merged multiple
+ * times in a serialized fashion on the output Observable.
+ *
+ * <span class="informal">It's like {@link concatMap}, but maps each value
+ * always to the same inner Observable.</span>
+ *
+ * <img src="./img/concatMapTo.png" width="100%">
+ *
+ * Maps each source value to the given Observable `innerObservable` regardless
+ * of the source value, and then flattens those resulting Observables into one
+ * single Observable, which is the output Observable. Each new `innerObservable`
+ * instance emitted on the output Observable is concatenated with the previous
+ * `innerObservable` instance.
+ *
+ * __Warning:__ if source values arrive endlessly and faster than their
+ * corresponding inner Observables can complete, it will result in memory issues
+ * as inner Observables amass in an unbounded buffer waiting for their turn to
+ * be subscribed to.
+ *
+ * Note: `concatMapTo` is equivalent to `mergeMapTo` with concurrency parameter
+ * set to `1`.
+ *
+ * @example <caption>For each click event, tick every second from 0 to 3, with no concurrency</caption>
+ * var clicks = Rx.Observable.fromEvent(document, 'click');
+ * var result = clicks.concatMapTo(Rx.Observable.interval(1000).take(4));
+ * result.subscribe(x => console.log(x));
+ *
+ * // Results in the following:
+ * // (results are not concurrent)
+ * // For every click on the "document" it will emit values 0 to 3 spaced
+ * // on a 1000ms interval
+ * // one click = 1000ms-> 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3
+ *
+ * @see {@link concat}
+ * @see {@link concatAll}
+ * @see {@link concatMap}
+ * @see {@link mergeMapTo}
+ * @see {@link switchMapTo}
+ *
+ * @param {ObservableInput} innerObservable An Observable to replace each value from
+ * the source Observable.
+ * @param {function(outerValue: T, innerValue: I, outerIndex: number, innerIndex: number): any} [resultSelector]
+ * A function to produce the value on the output Observable based on the values
+ * and the indices of the source (outer) emission and the inner Observable
+ * emission. The arguments passed to this function are:
+ * - `outerValue`: the value that came from the source
+ * - `innerValue`: the value that came from the projected Observable
+ * - `outerIndex`: the "index" of the value that came from the source
+ * - `innerIndex`: the "index" of the value from the projected Observable
+ * @return {Observable} An observable of values merged together by joining the
+ * passed observable with itself, one after the other, for each value emitted
+ * from the source.
+ * @method concatMapTo
+ * @owner Observable
+ */
+function concatMapTo(innerObservable, resultSelector) {
+    return concatMapTo_1.concatMapTo(innerObservable, resultSelector)(this);
+}
+exports.concatMapTo = concatMapTo;
+//# sourceMappingURL=concatMapTo.js.map