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

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+/** PURE_IMPORTS_START tslib,_scheduler_async,_util_isDate,_Subscriber,_Notification PURE_IMPORTS_END */
+import * as tslib_1 from "tslib";
+import { async } from '../scheduler/async';
+import { isDate } from '../util/isDate';
+import { Subscriber } from '../Subscriber';
+import { Notification } from '../Notification';
+export function delay(delay, scheduler) {
+    if (scheduler === void 0) {
+        scheduler = async;
+    }
+    var absoluteDelay = isDate(delay);
+    var delayFor = absoluteDelay ? (+delay - scheduler.now()) : Math.abs(delay);
+    return function (source) { return source.lift(new DelayOperator(delayFor, scheduler)); };
+}
+var DelayOperator = /*@__PURE__*/ (function () {
+    function DelayOperator(delay, scheduler) {
+        this.delay = delay;
+        this.scheduler = scheduler;
+    }
+    DelayOperator.prototype.call = function (subscriber, source) {
+        return source.subscribe(new DelaySubscriber(subscriber, this.delay, this.scheduler));
+    };
+    return DelayOperator;
+}());
+var DelaySubscriber = /*@__PURE__*/ (function (_super) {
+    tslib_1.__extends(DelaySubscriber, _super);
+    function DelaySubscriber(destination, delay, scheduler) {
+        var _this = _super.call(this, destination) || this;
+        _this.delay = delay;
+        _this.scheduler = scheduler;
+        _this.queue = [];
+        _this.active = false;
+        _this.errored = false;
+        return _this;
+    }
+    DelaySubscriber.dispatch = function (state) {
+        var source = state.source;
+        var queue = source.queue;
+        var scheduler = state.scheduler;
+        var destination = state.destination;
+        while (queue.length > 0 && (queue[0].time - scheduler.now()) <= 0) {
+            queue.shift().notification.observe(destination);
+        }
+        if (queue.length > 0) {
+            var delay_1 = Math.max(0, queue[0].time - scheduler.now());
+            this.schedule(state, delay_1);
+        }
+        else {
+            this.unsubscribe();
+            source.active = false;
+        }
+    };
+    DelaySubscriber.prototype._schedule = function (scheduler) {
+        this.active = true;
+        var destination = this.destination;
+        destination.add(scheduler.schedule(DelaySubscriber.dispatch, this.delay, {
+            source: this, destination: this.destination, scheduler: scheduler
+        }));
+    };
+    DelaySubscriber.prototype.scheduleNotification = function (notification) {
+        if (this.errored === true) {
+            return;
+        }
+        var scheduler = this.scheduler;
+        var message = new DelayMessage(scheduler.now() + this.delay, notification);
+        this.queue.push(message);
+        if (this.active === false) {
+            this._schedule(scheduler);
+        }
+    };
+    DelaySubscriber.prototype._next = function (value) {
+        this.scheduleNotification(Notification.createNext(value));
+    };
+    DelaySubscriber.prototype._error = function (err) {
+        this.errored = true;
+        this.queue = [];
+        this.destination.error(err);
+        this.unsubscribe();
+    };
+    DelaySubscriber.prototype._complete = function () {
+        this.scheduleNotification(Notification.createComplete());
+        this.unsubscribe();
+    };
+    return DelaySubscriber;
+}(Subscriber));
+var DelayMessage = /*@__PURE__*/ (function () {
+    function DelayMessage(time, notification) {
+        this.time = time;
+        this.notification = notification;
+    }
+    return DelayMessage;
+}());
+//# sourceMappingURL=delay.js.map