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"use strict"; var exhaustMap_1 = require('../operators/exhaustMap'); /* tslint:enable:max-line-length */ /** * Projects each source value to an Observable which is merged in the output * Observable only if the previous projected Observable has completed. * * <span class="informal">Maps each value to an Observable, then flattens all of * these inner Observables using {@link exhaust}.</span> * * <img src="./img/exhaustMap.png" width="100%"> * * Returns an Observable that emits items based on applying a function that you * supply to each item emitted by the source Observable, where that function * returns an (so-called "inner") Observable. When it projects a source value to * an Observable, the output Observable begins emitting the items emitted by * that projected Observable. However, `exhaustMap` ignores every new projected * Observable if the previous projected Observable has not yet completed. Once * that one completes, it will accept and flatten the next projected Observable * and repeat this process. * * @example <caption>Run a finite timer for each click, only if there is no currently active timer</caption> * var clicks = Rx.Observable.fromEvent(document, 'click'); * var result = clicks.exhaustMap((ev) => Rx.Observable.interval(1000).take(5)); * result.subscribe(x => console.log(x)); * * @see {@link concatMap} * @see {@link exhaust} * @see {@link mergeMap} * @see {@link switchMap} * * @param {function(value: T, ?index: number): ObservableInput} project A function * that, when applied to an item emitted by the source Observable, returns an * 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 containing projected Observables * of each item of the source, ignoring projected Observables that start before * their preceding Observable has completed. * @method exhaustMap * @owner Observable */ function exhaustMap(project, resultSelector) { return exhaustMap_1.exhaustMap(project, resultSelector)(this); } exports.exhaustMap = exhaustMap; //# sourceMappingURL=exhaustMap.js.map