# Code coverage report for RxJS/dist/cjs/operators/extended/elementAt.js

## Statements: 95.92% (47 / 49) Branches: 70.83% (17 / 24) Functions: 100% (11 / 11) Lines: 100% (41 / 41) Ignored: none

All files » RxJS/dist/cjs/operators/extended/ » elementAt.js

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    1'use strict';

    exports.__esModule = true;
    exports['default'] = elementAt;

    function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

    function _inherits(subClass, superClass) { Iif (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); Eif (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

    function _classCallCheck(instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

    var _Subscriber2 = require('../../Subscriber');

    var _Subscriber3 = _interopRequireDefault(_Subscriber2);

    var _utilArgumentOutOfRangeError = require('../../util/ArgumentOutOfRangeError');

    var _utilArgumentOutOfRangeError2 = _interopRequireDefault(_utilArgumentOutOfRangeError);

    function elementAt(index, defaultValue) {
        return this.lift(new ElementAtOperator(index, defaultValue));
    }

    var ElementAtOperator = (function () {
        function ElementAtOperator(index, defaultValue) {
            _classCallCheck(this, ElementAtOperator);

            this.index = index;
            this.defaultValue = defaultValue;
            if (index < 0) {
                throw new _utilArgumentOutOfRangeError2['default']();
            }
        }

        ElementAtOperator.prototype.call = function call(subscriber) {
            return new ElementAtSubscriber(subscriber, this.index, this.defaultValue);
        };

        return ElementAtOperator;
    })();

    var ElementAtSubscriber = (function (_Subscriber) {
        _inherits(ElementAtSubscriber, _Subscriber);

        function ElementAtSubscriber(destination, index, defaultValue) {
            _classCallCheck(this, ElementAtSubscriber);

            _Subscriber.call(this, destination);
            this.index = index;
            this.defaultValue = defaultValue;
        }

        ElementAtSubscriber.prototype._next = function _next(x) {
            if (this.index-- === 0) {
                this.destination.next(x);
                this.destination.complete();
            }
        };

        ElementAtSubscriber.prototype._complete = function _complete() {
            var destination = this.destination;
            Eif (this.index >= 0) {
                if (typeof this.defaultValue !== 'undefined') {
                    destination.next(this.defaultValue);
                } else {
                    destination.error(new _utilArgumentOutOfRangeError2['default']());
                }
            }
            destination.complete();
        };

        return ElementAtSubscriber;
    })(_Subscriber3['default']);

    module.exports = exports['default'];