docs: function(module, exports, __webpack_require__) {
  
  	"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 = __webpack_require__(8);
  	var ArgumentOutOfRangeError_1 = __webpack_require__(456);
  	/**
  	 * Emits the single value at the specified `index` in a sequence of emissions
  	 * from the source Observable.
  	 *
  	 * <span class="informal">Emits only the i-th value, then completes.</span>
  	 *
  	 * <img src="./img/elementAt.png" width="100%">
  	 *
  	 * `elementAt` returns an Observable that emits the item at the specified
  	 * `index` in the source Observable, or a default value if that `index` is out
  	 * of range and the `default` argument is provided. If the `default` argument is
  	 * not given and the `index` is out of range, the output Observable will emit an
  	 * `ArgumentOutOfRangeError` error.
  	 *
  	 * @example <caption>Emit only the third click event</caption>
  	 * var clicks = Rx.Observable.fromEvent(document, 'click');
  	 * var result = clicks.elementAt(2);
  	 * result.subscribe(x => console.log(x));
  	 *
  	 * @see {@link first}
  	 * @see {@link last}
  	 * @see {@link skip}
  	 * @see {@link single}
  	 * @see {@link take}
  	 *
  	 * @throws {ArgumentOutOfRangeError} When using `elementAt(i)`, it delivers an
  	 * ArgumentOutOrRangeError to the Observer's `error` callback if `i < 0` or the
  	 * Observable has completed before emitting the i-th `next` notification.
  	 *
  	 * @param {number} index Is the number `i` for the i-th source emission that has
  	 * happened since the subscription, starting from the number `0`.
  	 * @param {T} [defaultValue] The default value returned for missing indices.
  	 * @return {Observable} An Observable that emits a single item, if it is found.
  	 * Otherwise, will emit the default value if given. If not, then emits an error.
  	 * @method elementAt
  	 * @owner Observable
  	 */
  	function elementAt(index, defaultValue) {
  	    return this.lift(new ElementAtOperator(index, defaultValue));
  	}
  	exports.elementAt = elementAt;
  	var ElementAtOperator = (function () {
  	    function ElementAtOperator(index, defaultValue) {
  	        this.index = index;
  	        this.defaultValue = defaultValue;
  	        if (index < 0) {
  	            throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError;
  	        }
  	    }
  	    ElementAtOperator.prototype.call = function (subscriber, source) {
  	        return source._subscribe(new ElementAtSubscriber(subscriber, this.index, this.defaultValue));
  	    };
  	    return ElementAtOperator;
  	}());
  	/**
  	 * We need this JSDoc comment for affecting ESDoc.
  	 * @ignore
  	 * @extends {Ignored}
  	 */
  	var ElementAtSubscriber = (function (_super) {
  	    __extends(ElementAtSubscriber, _super);
  	    function ElementAtSubscriber(destination, index, defaultValue) {
  	        _super.call(this, destination);
  	        this.index = index;
  	        this.defaultValue = defaultValue;
  	    }
  	    ElementAtSubscriber.prototype._next = function (x) {
  	        if (this.index-- === 0) {
  	            this.destination.next(x);
  	            this.destination.complete();
  	        }
  	    };
  	    ElementAtSubscriber.prototype._complete = function () {
  	        var destination = this.destination;
  	        if (this.index >= 0) {
  	            if (typeof this.defaultValue !== 'undefined') {
  	                destination.next(this.defaultValue);
  	            }
  	            else {
  	                destination.error(new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError);
  	            }
  	        }
  	        destination.complete();
  	    };
  	    return ElementAtSubscriber;
  	}(Subscriber_1.Subscriber));
  	//# sourceMappingURL=elementAt.js.map
  
  /***/ }