/**
 * @module CircuitBreaker
 */
import { type IKey } from "../../namespace/contracts/_module.js";
import { type InferInstance } from "../../utilities/_module.js";
/**
 * The error is thrown when circuit breaker is in open state and will not allow any attempts.
 *
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Errors
 */
export declare class OpenCircuitBreakerError extends Error {
    static create(key: IKey, cause?: unknown): OpenCircuitBreakerError;
    /**
     * Note: Do not instantiate `OpenCircuitBreakerError` directly via the constructor. Use the static `create()` factory method instead.
     * The constructor remains public only to maintain compatibility with errorPolicy types and prevent type errors.
     * @internal
     */
    constructor(message: string, cause?: unknown);
}
export declare class IsolatedCircuitBreakerError extends Error {
    static create(key: IKey, cause?: unknown): IsolatedCircuitBreakerError;
    /**
     * Note: Do not instantiate `IsolatedCircuitBreakerError` directly via the constructor. Use the static `create()` factory method instead.
     * The constructor remains public only to maintain compatibility with errorPolicy types and prevent type errors.
     * @internal
     */
    constructor(message: string, cause?: unknown);
}
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Errors
 */
export declare const CIRCUIT_BREAKER_ERRORS: {
    readonly Open: typeof OpenCircuitBreakerError;
    readonly Isolated: typeof IsolatedCircuitBreakerError;
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Errors
 */
export type AllCircuitBreakerErrors = InferInstance<(typeof CIRCUIT_BREAKER_ERRORS)[keyof typeof CIRCUIT_BREAKER_ERRORS]>;
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Errors
 */
export declare function isCircuitBreakerError(value: unknown): value is AllCircuitBreakerErrors;