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

## Statements: 94.67% (71 / 75) Branches: 75% (24 / 32) Functions: 100% (14 / 14) Lines: 97.01% (65 / 67) Ignored: none

All files » RxJS/dist/cjs/operators/ » switchMap.js

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    1'use strict';

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

    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 _utilTryCatch = require('../util/tryCatch');

    var _utilTryCatch2 = _interopRequireDefault(_utilTryCatch);

    var _utilErrorObject = require('../util/errorObject');

    var _OuterSubscriber2 = require('../OuterSubscriber');

    var _OuterSubscriber3 = _interopRequireDefault(_OuterSubscriber2);

    var _utilSubscribeToResult = require('../util/subscribeToResult');

    var _utilSubscribeToResult2 = _interopRequireDefault(_utilSubscribeToResult);

    function switchMap(project, resultSelector) {
        return this.lift(new SwitchMapOperator(project, resultSelector));
    }

    var SwitchMapOperator = (function () {
        function SwitchMapOperator(project, resultSelector) {
            _classCallCheck(this, SwitchMapOperator);

            this.project = project;
            this.resultSelector = resultSelector;
        }

        SwitchMapOperator.prototype.call = function call(subscriber) {
            return new SwitchMapSubscriber(subscriber, this.project, this.resultSelector);
        };

        return SwitchMapOperator;
    })();

    var SwitchMapSubscriber = (function (_OuterSubscriber) {
        _inherits(SwitchMapSubscriber, _OuterSubscriber);

        function SwitchMapSubscriber(destination, project, resultSelector) {
            _classCallCheck(this, SwitchMapSubscriber);

            _OuterSubscriber.call(this, destination);
            this.project = project;
            this.resultSelector = resultSelector;
            this.hasCompleted = false;
            this.index = 0;
        }

        SwitchMapSubscriber.prototype._next = function _next(value) {
            var index = this.index++;
            var destination = this.destination;
            var result = _utilTryCatch2['default'](this.project)(value, index);
            Iif (result === _utilErrorObject.errorObject) {
                destination.error(result.e);
            } else {
                var innerSubscription = this.innerSubscription;
                if (innerSubscription) {
                    innerSubscription.unsubscribe();
                }
                this.add(this.innerSubscription = _utilSubscribeToResult2['default'](this, result, value, index));
            }
        };

        SwitchMapSubscriber.prototype._complete = function _complete() {
            var innerSubscription = this.innerSubscription;
            this.hasCompleted = true;
            if (!innerSubscription || innerSubscription.isUnsubscribed) {
                this.destination.complete();
            }
        };

        SwitchMapSubscriber.prototype.notifyComplete = function notifyComplete(innerSub) {
            this.remove(innerSub);
            var prevSubscription = this.innerSubscription;
            if (prevSubscription) {
                prevSubscription.unsubscribe();
            }
            this.innerSubscription = null;
            if (this.hasCompleted) {
                this.destination.complete();
            }
        };

        SwitchMapSubscriber.prototype.notifyError = function notifyError(err) {
            this.destination.error(err);
        };

        SwitchMapSubscriber.prototype.notifyNext = function notifyNext(outerValue, innerValue, outerIndex, innerIndex) {
            var resultSelector = this.resultSelector;
            var destination = this.destination;

            if (resultSelector) {
                var result = _utilTryCatch2['default'](resultSelector)(outerValue, innerValue, outerIndex, innerIndex);
                Iif (result === _utilErrorObject.errorObject) {
                    destination.error(_utilErrorObject.errorObject.e);
                } else {
                    destination.next(result);
                }
            } else {
                destination.next(innerValue);
            }
        };

        return SwitchMapSubscriber;
    })(_OuterSubscriber3['default']);

    module.exports = exports['default'];