/**
 * Error types for the concurrency module.
 *
 * @module bquery/concurrency
 */
import type { TaskWorkerErrorCode } from './types';
/** Base error for concurrency task failures. */
export declare class TaskWorkerError extends Error {
    /** Stable error code for programmatic handling. */
    code: TaskWorkerErrorCode;
    constructor(message: string, code: TaskWorkerErrorCode, cause?: unknown);
}
/** Thrown when the environment cannot create inline Web Workers. */
export declare class TaskWorkerUnsupportedError extends TaskWorkerError {
    constructor(message?: string, cause?: unknown);
}
/** Thrown when the task handler or payload cannot be serialized safely. */
export declare class TaskWorkerSerializationError extends TaskWorkerError {
    constructor(message: string, cause?: unknown);
}
/** Thrown when a task exceeds its configured timeout. */
export declare class TaskWorkerTimeoutError extends TaskWorkerError {
    constructor(message: string, cause?: unknown);
}
/** Thrown when a task is aborted via `AbortSignal`. */
export declare class TaskWorkerAbortError extends TaskWorkerError {
    constructor(message?: string, cause?: unknown);
}
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