export declare class TestingError extends Error {
    code: string;
    constructor(message: string, code: string);
}
export declare class TimeoutError extends TestingError {
    constructor(operation: string, timeout: number);
}
export declare class NotFoundError extends TestingError {
    constructor(entity: string, identifier?: string);
}
export declare class RetryError extends TestingError {
    attempts: number;
    lastError?: Error | undefined;
    constructor(message: string, attempts: number, lastError?: Error | undefined);
}