/**
 * A class that manages timeouts and abort signals, allowing for both a lifespan timeout and a resettable timeout.
 *
 * The class uses an `AbortController` to signal cancellation and provides methods to manage and clear timeouts.
 */
export declare class TimeoutAbort {
    private readonly abortController;
    private timeoutHandle;
    private lifespanTimeoutHandle;
    private _isAborted;
    /**
     * Constructs a `TimeoutAbort` instance with an optional lifespan timeout.
     *
     * @param {number | null} [lifespan = undefined] The lifespan in milliseconds after which the instance will be automatically aborted.
     */
    constructor(lifespan?: number | null);
    /**
     * Gets the `AbortSignal` associated with this instance.
     *
     * @returns {AbortSignal} The `AbortSignal` that allows for cancellation of operations.
     */
    get signal(): AbortSignal;
    /**
     * Checks if the instance has been aborted.
     *
     * @returns {boolean} `true` if the instance is aborted, otherwise `false`.
     */
    get isAborted(): boolean;
    /**
     * Resets the timeout to a new value, aborting if necessary.
     *
     * @param {number} newTimeout The new timeout duration in milliseconds.
     *
     * @returns {boolean} `true` if the timeout was successfully reset, `false` if the instance is already aborted.
     */
    resetTimeout(newTimeout: number): boolean;
    /**
     * Clears the currently set timeout, if any.
     */
    clearTimeout(): void;
    /**
     * Aborts the instance immediately, clearing any active timeouts and signaling cancellation.
     */
    abort(): void;
}