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node_modules/rxjs/_esm5/internal/operators/exhaustMap.js

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+/** PURE_IMPORTS_START tslib,_OuterSubscriber,_InnerSubscriber,_util_subscribeToResult,_map,_observable_from PURE_IMPORTS_END */
+import * as tslib_1 from "tslib";
+import { OuterSubscriber } from '../OuterSubscriber';
+import { InnerSubscriber } from '../InnerSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+import { map } from './map';
+import { from } from '../observable/from';
+export function exhaustMap(project, resultSelector) {
+    if (resultSelector) {
+        return function (source) { return source.pipe(exhaustMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
+    }
+    return function (source) {
+        return source.lift(new ExhaustMapOperator(project));
+    };
+}
+var ExhaustMapOperator = /*@__PURE__*/ (function () {
+    function ExhaustMapOperator(project) {
+        this.project = project;
+    }
+    ExhaustMapOperator.prototype.call = function (subscriber, source) {
+        return source.subscribe(new ExhaustMapSubscriber(subscriber, this.project));
+    };
+    return ExhaustMapOperator;
+}());
+var ExhaustMapSubscriber = /*@__PURE__*/ (function (_super) {
+    tslib_1.__extends(ExhaustMapSubscriber, _super);
+    function ExhaustMapSubscriber(destination, project) {
+        var _this = _super.call(this, destination) || this;
+        _this.project = project;
+        _this.hasSubscription = false;
+        _this.hasCompleted = false;
+        _this.index = 0;
+        return _this;
+    }
+    ExhaustMapSubscriber.prototype._next = function (value) {
+        if (!this.hasSubscription) {
+            this.tryNext(value);
+        }
+    };
+    ExhaustMapSubscriber.prototype.tryNext = function (value) {
+        var result;
+        var index = this.index++;
+        try {
+            result = this.project(value, index);
+        }
+        catch (err) {
+            this.destination.error(err);
+            return;
+        }
+        this.hasSubscription = true;
+        this._innerSub(result, value, index);
+    };
+    ExhaustMapSubscriber.prototype._innerSub = function (result, value, index) {
+        var innerSubscriber = new InnerSubscriber(this, value, index);
+        var destination = this.destination;
+        destination.add(innerSubscriber);
+        var innerSubscription = subscribeToResult(this, result, undefined, undefined, innerSubscriber);
+        if (innerSubscription !== innerSubscriber) {
+            destination.add(innerSubscription);
+        }
+    };
+    ExhaustMapSubscriber.prototype._complete = function () {
+        this.hasCompleted = true;
+        if (!this.hasSubscription) {
+            this.destination.complete();
+        }
+        this.unsubscribe();
+    };
+    ExhaustMapSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
+        this.destination.next(innerValue);
+    };
+    ExhaustMapSubscriber.prototype.notifyError = function (err) {
+        this.destination.error(err);
+    };
+    ExhaustMapSubscriber.prototype.notifyComplete = function (innerSub) {
+        var destination = this.destination;
+        destination.remove(innerSub);
+        this.hasSubscription = false;
+        if (this.hasCompleted) {
+            this.destination.complete();
+        }
+    };
+    return ExhaustMapSubscriber;
+}(OuterSubscriber));
+//# sourceMappingURL=exhaustMap.js.map