# Code coverage report for RxJS/dist/cjs/observables/ScalarObservable.js

## Statements: 81.32% (74 / 91) Branches: 75% (39 / 52) Functions: 80% (12 / 15) Lines: 81.93% (68 / 83) Ignored: none

All files » RxJS/dist/cjs/observables/ » ScalarObservable.js

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    1'use strict';

    exports.__esModule = true;

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

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

    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; }

    var _Observable2 = require('../Observable');

    var _Observable3 = _interopRequireDefault(_Observable2);

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

    var _utilTryCatch2 = _interopRequireDefault(_utilTryCatch);

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

    var _ErrorObservable = require('./ErrorObservable');

    var _ErrorObservable2 = _interopRequireDefault(_ErrorObservable);

    var _EmptyObservable = require('./EmptyObservable');

    var _EmptyObservable2 = _interopRequireDefault(_EmptyObservable);

    var ScalarObservable = (function (_Observable) {
        _inherits(ScalarObservable, _Observable);

        function ScalarObservable(value, scheduler) {
            _classCallCheck(this, ScalarObservable);

            _Observable.call(this);
            this.value = value;
            this.scheduler = scheduler;
            this._isScalar = true;
        }

        // TypeScript is weird about class prototype member functions and instance properties touching on it's plate.

        ScalarObservable.create = function create(value, scheduler) {
            return new ScalarObservable(value, scheduler);
        };

        ScalarObservable.dispatch = function dispatch(state) {
            var done = state.done;
            var value = state.value;
            var subscriber = state.subscriber;

            if (done) {
                subscriber.complete();
                return;
            }
            subscriber.next(value);
            if (subscriber.isUnsubscribed) {
                return;
            }
            state.done = true;
            this.schedule(state);
        };

        ScalarObservable.prototype._subscribe = function _subscribe(subscriber) {
            var value = this.value;
            var scheduler = this.scheduler;
            Iif (scheduler) {
                subscriber.add(scheduler.schedule(ScalarObservable.dispatch, 0, {
                    done: false, value: value, subscriber: subscriber
                }));
            } else {
                subscriber.next(value);
                Eif (!subscriber.isUnsubscribed) {
                    subscriber.complete();
                }
            }
        };

        return ScalarObservable;
    })(_Observable3['default']);

    exports['default'] = ScalarObservable;
    var proto = ScalarObservable.prototype;
    proto.map = function (project, thisArg) {
        var result = _utilTryCatch2['default'](project).call(thisArg || this, this.value, 0);
        if (result === _utilErrorObject.errorObject) {
            return new _ErrorObservable2['default'](_utilErrorObject.errorObject.e);
        } else {
            return new ScalarObservable(project.call(thisArg || this, this.value, 0));
        }
    };
    proto.filter = function (select, thisArg) {
        var result = _utilTryCatch2['default'](select).call(thisArg || this, this.value, 0);
        if (result === _utilErrorObject.errorObject) {
            return new _ErrorObservable2['default'](_utilErrorObject.errorObject.e);
        } else if (result) {
            return this;
        } else {
            return new _EmptyObservable2['default']();
        }
    };
    proto.reduce = function (project, acc) {
        if (typeof acc === 'undefined') {
            return this;
        }
        var result = _utilTryCatch2['default'](project)(acc, this.value);
        Iif (result === _utilErrorObject.errorObject) {
            return new _ErrorObservable2['default'](_utilErrorObject.errorObject.e);
        } else {
            return new ScalarObservable(result);
        }
    };
    proto.scan = function (project, acc) {
        return this.reduce(project, acc);
    };
    proto.count = function (predicate, thisArg) {
        if (!predicate) {
            return new ScalarObservable(1);
        } else {
            var result = _utilTryCatch2['default'](predicate).call(thisArg || this, this.value, 0, this);
            if (result === _utilErrorObject.errorObject) {
                return new _ErrorObservable2['default'](_utilErrorObject.errorObject.e);
            } else {
                return new ScalarObservable(result ? 1 : 0);
            }
        }
    };
    proto.skip = function (count) {
        if (count > 0) {
            return new _EmptyObservable2['default']();
        }
        return this;
    };
    proto.take = function (count) {
        if (count > 0) {
            return this;
        }
        return new _EmptyObservable2['default']();
    };
    module.exports = exports['default'];