catchError.js 2.38 KB
"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    }
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var innerSubscribe_1 = require("../innerSubscribe");
function catchError(selector) {
    return function catchErrorOperatorFunction(source) {
        var operator = new CatchOperator(selector);
        var caught = source.lift(operator);
        return (operator.caught = caught);
    };
}
exports.catchError = catchError;
var CatchOperator = (function () {
    function CatchOperator(selector) {
        this.selector = selector;
    }
    CatchOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new CatchSubscriber(subscriber, this.selector, this.caught));
    };
    return CatchOperator;
}());
var CatchSubscriber = (function (_super) {
    __extends(CatchSubscriber, _super);
    function CatchSubscriber(destination, selector, caught) {
        var _this = _super.call(this, destination) || this;
        _this.selector = selector;
        _this.caught = caught;
        return _this;
    }
    CatchSubscriber.prototype.error = function (err) {
        if (!this.isStopped) {
            var result = void 0;
            try {
                result = this.selector(err, this.caught);
            }
            catch (err2) {
                _super.prototype.error.call(this, err2);
                return;
            }
            this._unsubscribeAndRecycle();
            var innerSubscriber = new innerSubscribe_1.SimpleInnerSubscriber(this);
            this.add(innerSubscriber);
            var innerSubscription = innerSubscribe_1.innerSubscribe(result, innerSubscriber);
            if (innerSubscription !== innerSubscriber) {
                this.add(innerSubscription);
            }
        }
    };
    return CatchSubscriber;
}(innerSubscribe_1.SimpleOuterSubscriber));
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