"use strict";
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subscriber_1 = require('../Subscriber');
var async_1 = require('../scheduler/async');
/**
 * @param scheduler
 * @return {Observable<Timestamp<any>>|WebSocketSubject<T>|Observable<T>}
 * @method timestamp
 * @owner Observable
 */
function timestamp(scheduler) {
    if (scheduler === void 0) { scheduler = async_1.async; }
    return this.lift(new TimestampOperator(scheduler));
}
exports.timestamp = timestamp;
var Timestamp = (function () {
    function Timestamp(value, timestamp) {
        this.value = value;
        this.timestamp = timestamp;
    }
    return Timestamp;
}());
exports.Timestamp = Timestamp;
;
var TimestampOperator = (function () {
    function TimestampOperator(scheduler) {
        this.scheduler = scheduler;
    }
    TimestampOperator.prototype.call = function (observer) {
        return new TimestampSubscriber(observer, this.scheduler);
    };
    return TimestampOperator;
}());
var TimestampSubscriber = (function (_super) {
    __extends(TimestampSubscriber, _super);
    function TimestampSubscriber(destination, scheduler) {
        _super.call(this, destination);
        this.scheduler = scheduler;
    }
    TimestampSubscriber.prototype._next = function (value) {
        var now = this.scheduler.now();
        this.destination.next(new Timestamp(value, now));
    };
    return TimestampSubscriber;
}(Subscriber_1.Subscriber));
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