/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { Subscriber } from '../Subscriber';
export function filter(predicate, thisArg) {
    return function filterOperatorFunction(source) {
        return source.lift(new FilterOperator(predicate, thisArg));
    };
}
var FilterOperator = /*@__PURE__*/ (function () {
    function FilterOperator(predicate, thisArg) {
        this.predicate = predicate;
        this.thisArg = thisArg;
    }
    FilterOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new FilterSubscriber(subscriber, this.predicate, this.thisArg));
    };
    return FilterOperator;
}());
var FilterSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(FilterSubscriber, _super);
    function FilterSubscriber(destination, predicate, thisArg) {
        var _this = _super.call(this, destination) || this;
        _this.predicate = predicate;
        _this.thisArg = thisArg;
        _this.count = 0;
        return _this;
    }
    FilterSubscriber.prototype._next = function (value) {
        var result;
        try {
            result = this.predicate.call(this.thisArg, value, this.count++);
        }
        catch (err) {
            this.destination.error(err);
            return;
        }
        if (result) {
            this.destination.next(value);
        }
    };
    return FilterSubscriber;
}(Subscriber));
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