import { operate } from "../util/lift.mjs";
import { createOperatorSubscriber } from "./OperatorSubscriber.mjs";
import { innerFrom } from "../observable/innerFrom.mjs";

//#region ../../node_modules/.pnpm/rxjs@7.8.2/node_modules/rxjs/dist/esm5/internal/operators/throttle.js
function throttle(durationSelector, config) {
	return 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 || 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(durationSelector(value)).subscribe(createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling));
		};
		var send = function() {
			if (hasValue) {
				hasValue = false;
				var value = sendValue;
				sendValue = null;
				subscriber.next(value);
				!isComplete && startThrottle(value);
			}
		};
		source.subscribe(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();
		}));
	});
}

//#endregion
export { throttle };
//# sourceMappingURL=throttle.mjs.map