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

## Statements: 95.45% (42 / 44) Branches: 70% (14 / 20) Functions: 100% (10 / 10) Lines: 100% (36 / 36) Ignored: none

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

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77

    1
    1

    3

    1

    90

    1

    1

    1

    1

    1

    1

    1

    1
    46

    1
    1
    45

    45

    1
    45

    1

    1
    1

    1
    45

    45
    45
    45

    1
    162
    162
    4
    158
    72

    1

    1'use strict';

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

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

    var _utilTryCatch2 = _interopRequireDefault(_utilTryCatch);

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

    var _utilBindCallback = require('../util/bindCallback');

    var _utilBindCallback2 = _interopRequireDefault(_utilBindCallback);

    /**
     * Similar to the well-known `Array.prototype.filter` method, this operator filters values down to a set
     * allowed by a `select` function
     *
     * @param {Function} select a function that is used to select the resulting values
     *  if it returns `true`, the value is emitted, if `false` the value is not passed to the resulting observable
     * @param {any} [thisArg] an optional argument to determine the value of `this` in the `select` function
     * @returns {Observable} an observable of values allowed by the select function
     */

    function filter(select, thisArg) {
        return this.lift(new FilterOperator(select, thisArg));
    }

    var FilterOperator = (function () {
        function FilterOperator(select, thisArg) {
            _classCallCheck(this, FilterOperator);

            this.select = _utilBindCallback2['default'](select, thisArg, 2);
        }

        FilterOperator.prototype.call = function call(subscriber) {
            return new FilterSubscriber(subscriber, this.select);
        };

        return FilterOperator;
    })();

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

        function FilterSubscriber(destination, select) {
            _classCallCheck(this, FilterSubscriber);

            _Subscriber.call(this, destination);
            this.count = 0;
            this.select = select;
        }

        FilterSubscriber.prototype._next = function _next(x) {
            var result = _utilTryCatch2['default'](this.select)(x, this.count++);
            if (result === _utilErrorObject.errorObject) {
                this.destination.error(_utilErrorObject.errorObject.e);
            } else if (Boolean(result)) {
                this.destination.next(x);
            }
        };

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

    module.exports = exports['default'];