modules/frontend/app/errors/CancellationError.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

export class CancellationError extends Error {
    constructor(message = 'Cancelled by user') {
        super(message);

        // Workaround for Babel issue with extend: https://github.com/babel/babel/issues/3083#issuecomment-315569824
        this.constructor = CancellationError;

        // eslint-disable-next-line no-proto
        this.__proto__ = CancellationError.prototype;
    }
}