/**
 * Enhanced safeRun utility specifically designed for testing DDD/CQRS patterns.
 * Provides type-safe error/success pattern for async operations in tests.
 *
 * Migrated from @vytches/ddd-utils and enhanced with testing-specific features.
 */
export type SafeRunResult<T, E extends Error = Error> = readonly [E | undefined, T | undefined];
export declare function safeRun<T, E extends Error = Error>(fn: () => T): SafeRunResult<T, E>;
export declare function safeRun<T, E extends Error = Error>(fn: () => Promise<T>): Promise<SafeRunResult<T, E>>;
export declare function safeRunTest<T, E extends Error = Error>(fn: () => T | Promise<T>, context?: string): SafeRunResult<T, E> | Promise<SafeRunResult<T, E>>;
export declare function expectError<E extends Error>(errorType: new (...args: any[]) => E): (result: SafeRunResult<any, E>) => E;
export declare function expectSuccess<T>(result: SafeRunResult<T>): T;
export declare function safeRunWithTimeout<T, E extends Error = Error>(fn: () => Promise<T>, timeoutMs: number, context?: string): Promise<SafeRunResult<T, E | Error>>;