.

node_modules/rxjs/dist/cjs/internal/operators/throttle.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.throttle = void 0;
+var lift_1 = require("../util/lift");
+var OperatorSubscriber_1 = require("./OperatorSubscriber");
+var innerFrom_1 = require("../observable/innerFrom");
+function throttle(durationSelector, config) {
+    return lift_1.operate(function (source, subscriber) {
+        var _a = config !== null && config !== void 0 ? config : {}, _b = _a.leading, leading = _b === void 0 ? true : _b, _c = _a.trailing, trailing = _c === void 0 ? false : _c;
+        var hasValue = false;
+        var sendValue = null;
+        var throttled = null;
+        var isComplete = false;
+        var endThrottling = function () {
+            throttled === null || throttled === void 0 ? void 0 : throttled.unsubscribe();
+            throttled = null;
+            if (trailing) {
+                send();
+                isComplete && subscriber.complete();
+            }
+        };
+        var cleanupThrottling = function () {
+            throttled = null;
+            isComplete && subscriber.complete();
+        };
+        var startThrottle = function (value) {
+            return (throttled = innerFrom_1.innerFrom(durationSelector(value)).subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling)));
+        };
+        var send = function () {
+            if (hasValue) {
+                hasValue = false;
+                var value = sendValue;
+                sendValue = null;
+                subscriber.next(value);
+                !isComplete && startThrottle(value);
+            }
+        };
+        source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
+            hasValue = true;
+            sendValue = value;
+            !(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));
+        }, function () {
+            isComplete = true;
+            !(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();
+        }));
+    });
+}
+exports.throttle = throttle;
+//# sourceMappingURL=throttle.js.map