import type { CircuitBreakerOptions, CircuitBreakerHandle } from '../types.js';
/**
 * Creates a circuit breaker policy that prevents calls to a failing service.
 *
 * Returns an object with `execute` (the policy function) and `handle`
 * (an interface to inspect / reset the breaker state).
 *
 * @example
 * ```ts
 * const cb = circuitBreaker({ failureThreshold: 3, resetTimeout: 10_000 });
  * const result = await cb.execute(() => callApi());
 * console.log(cb.handle.state); // 'closed'
 * ```
 */
export declare function circuitBreaker(options?: CircuitBreakerOptions): {
    execute: <T>(fn: () => Promise<T>) => Promise<T>;
    handle: CircuitBreakerHandle;
};
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