/**
 * @module CircuitBreaker
 */
import { type ICircuitBreaker } from "../../circuit-breaker/contracts/circuit-breaker.contract.js";
import { type CircuitBreakerEventMap } from "../../circuit-breaker/contracts/circuit-breaker.events.js";
import { type IEventListenable } from "../../event-bus/contracts/_module.js";
import { type ITimeSpan } from "../../time-span/contracts/time-span.contract.js";
import { type ErrorPolicySettings } from "../../utilities/_module.js";
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export declare const CIRCUIT_BREAKER_TRIGGER: {
    readonly ONLY_ERROR: "ONLY_ERROR";
    readonly ONLY_SLOW_CALL: "ONLY_SLOW_CALL";
    readonly BOTH: "BOTH";
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export type CircuitBreakerTrigger = (typeof CIRCUIT_BREAKER_TRIGGER)[keyof typeof CIRCUIT_BREAKER_TRIGGER];
/**
 * Configuration settings for creating a circuit breaker instance through the factory.
 *
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export type CircuitBreakerFactoryCreateSettings = ErrorPolicySettings & {
    /**
     * Specifies what conditions are tracked as failures and trigger state transitions.
     * - `ONLY_ERROR`: Only failed invocations count as failures
     * - `ONLY_SLOW_CALL`: Only slow invocations count as failures
     * - `BOTH`: Both errors and slow calls count as failures
     */
    trigger?: CircuitBreakerTrigger;
    /**
     * Threshold for determining if an invocation is considered "slow".
     * Any invocation exceeding this duration will be marked as a slow call if tracking is enabled via the `trigger` setting.
     * Only relevant when `trigger` is `ONLY_SLOW_CALL` or `BOTH`.
     */
    slowCallTime?: ITimeSpan;
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export type ICircuitBreakerFactoryBase = {
    /**
     * The `create` method is used to create an instance of {@link ICircuitBreaker | `ICircuitBreaker`}.
     */
    create(key: string, settings?: CircuitBreakerFactoryCreateSettings): ICircuitBreaker;
};
/**
 * The `ICircuitBreakerListenable` contract defines a way for listening {@link ICircuitBreaker | `ICircuitBreaker`} operations and state transitions.
 *
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export type ICircuitBreakerListenable = IEventListenable<CircuitBreakerEventMap>;
/**
 * IMPORT_PATH: `"@daiso-tech/core/circuit-breaker/contracts"`
 * @group Contracts
 */
export type ICircuitBreakerFactory = ICircuitBreakerFactoryBase & {
    readonly events: ICircuitBreakerListenable;
};