/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
export type TaskExecutable<T = void> = (abortSignal: AbortSignal) => Promise<T>;
/**
 * Represents a runtime task wrapping a promise, allowing status check and cancellation.
 */
export declare class Task<T = void> {
    executable: TaskExecutable<T>;
    private isDone;
    private abortController;
    promise: Promise<T>;
    constructor(executable: TaskExecutable<T>);
    /**
     * Cancels the task execution.
     */
    cancel(): void;
    /**
     * Returns true if the task has completed (either resolved or rejected).
     */
    done(): boolean;
}