/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import { IDisposable } from './lifecycle.mjs';
export interface CancellationToken {
	/**
	 * A flag signalling is cancellation has been requested.
	 */
	readonly isCancellationRequested: boolean;
	/**
	 * An event which fires when cancellation is requested. This event
	 * only ever fires `once` as cancellation can only happen once. Listeners
	 * that are registered after cancellation will be called (next event loop run),
	 * but also only once.
	 *
	 * @event
	 */
	readonly onCancellationRequested: (
		listener: (e: any) => any,
		thisArgs?: any,
		disposables?: IDisposable[],
	) => IDisposable;
}
export declare namespace CancellationToken {
	function isCancellationToken(thing: unknown): thing is CancellationToken;
	const None: Readonly<CancellationToken>;
	const Cancelled: Readonly<CancellationToken>;
}
export declare class CancellationTokenSource {
	private _token?;
	private _parentListener?;
	constructor(parent?: CancellationToken);
	get token(): CancellationToken;
	cancel(): void;
	dispose(cancel?: boolean): void;
}