/**
 * Copyright 2017-2020 Plexus Interop Deutsche Bank AG
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed 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.
 */
import { ReadOnlyCancellationToken } from './ReadOnlyCancellationToken';
export declare type CancelListener = (reason: any) => void;
export declare class CancellationToken implements ReadOnlyCancellationToken {
    private readonly baseToken?;
    private cancelled;
    private reason;
    private listeners;
    constructor(baseToken?: CancellationToken | undefined);
    throwIfCanceled(): void;
    onCancel(callback: CancelListener): void;
    isCancelled(): boolean;
    cancel(reason?: string): void;
    getReason(): string;
}