# Code coverage report for RxJS/dist/cjs/operators/expand-support.js

## Statements: 91.43% (64 / 70) Branches: 70.45% (31 / 44) Functions: 100% (12 / 12) Lines: 93.55% (58 / 62) Ignored: none

All files » RxJS/dist/cjs/operators/ » expand-support.js

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    1'use strict';

    exports.__esModule = true;

    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);

    var ExpandOperator = (function () {
        function ExpandOperator(project) {
            var concurrent = arguments.length <= 1 || arguments[1] === undefined ? Number.POSITIVE_INFINITY : arguments[1];

            _classCallCheck(this, ExpandOperator);

            this.project = project;
            this.concurrent = concurrent;
        }

        ExpandOperator.prototype.call = function call(subscriber) {
            return new ExpandSubscriber(subscriber, this.project, this.concurrent);
        };

        return ExpandOperator;
    })();

    exports.ExpandOperator = ExpandOperator;

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

        function ExpandSubscriber(destination, project) {
            var concurrent = arguments.length <= 2 || arguments[2] === undefined ? Number.POSITIVE_INFINITY : arguments[2];

            _classCallCheck(this, ExpandSubscriber);

            _OuterSubscriber.call(this, destination);
            this.project = project;
            this.concurrent = concurrent;
            this.index = 0;
            this.active = 0;
            this.hasCompleted = false;
            Iif (concurrent < Number.POSITIVE_INFINITY) {
                this.buffer = [];
            }
        }

        ExpandSubscriber.prototype._next = function _next(value) {
            var index = this.index++;
            this.destination.next(value);
            Eif (this.active < this.concurrent) {
                var result = _utilTryCatch2['default'](this.project)(value, index);
                Iif (result === _utilErrorObject.errorObject) {
                    this.destination.error(result.e);
                } else {
                    if (result._isScalar) {
                        this._next(result.value);
                    } else {
                        this.active++;
                        this.add(_utilSubscribeToResult2['default'](this, result, value, index));
                    }
                }
            } else {
                this.buffer.push(value);
            }
        };

        ExpandSubscriber.prototype._complete = function _complete() {
            this.hasCompleted = true;
            if (this.hasCompleted && this.active === 0) {
                this.destination.complete();
            }
        };

        ExpandSubscriber.prototype.notifyComplete = function notifyComplete(innerSub) {
            var buffer = this.buffer;
            this.remove(innerSub);
            this.active--;
            Iif (buffer && buffer.length > 0) {
                this._next(buffer.shift());
            }
            if (this.hasCompleted && this.active === 0) {
                this.destination.complete();
            }
        };

        ExpandSubscriber.prototype.notifyNext = function notifyNext(outerValue, innerValue, outerIndex, innerIndex) {
            this._next(innerValue);
        };

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

    exports.ExpandSubscriber = ExpandSubscriber;