/**
 * AI Provider Event System
 *
 * Typed EventEmitter for rate limits, authentication, and process events.
 */
import { EventEmitter } from 'events';
export interface RateLimitHitPayload {
    message: string;
    timestamp?: number;
}
export interface AuthFailedPayload {
    error: string;
    suggestion: string;
}
export interface ProcessSpawnedPayload {
    requestId: string;
    workingDirectory?: string;
}
export interface ProcessCompletedPayload {
    requestId: string;
    durationMs: number;
    success: boolean;
}
export interface ProcessFailedPayload {
    requestId: string;
    error: string;
    errorType?: string;
}
export interface CircuitStateChangePayload {
    previousState: string;
    newState: string;
}
export interface AIProviderEvents {
    'rate_limit:hit': RateLimitHitPayload;
    'rate_limit:cleared': void;
    'auth:failed': AuthFailedPayload;
    'auth:success': void;
    'process:spawned': ProcessSpawnedPayload;
    'process:completed': ProcessCompletedPayload;
    'process:failed': ProcessFailedPayload;
    'circuit_breaker:opened': CircuitStateChangePayload;
    'circuit_breaker:half_open': CircuitStateChangePayload;
    'circuit_breaker:closed': CircuitStateChangePayload;
    'shutdown:started': void;
    'shutdown:completed': void;
}
declare class TypedEventEmitter extends EventEmitter {
    emit<K extends keyof AIProviderEvents>(event: K, payload?: AIProviderEvents[K]): boolean;
    on<K extends keyof AIProviderEvents>(event: K, listener: (payload: AIProviderEvents[K]) => void): this;
    once<K extends keyof AIProviderEvents>(event: K, listener: (payload: AIProviderEvents[K]) => void): this;
    off<K extends keyof AIProviderEvents>(event: K, listener: (payload: AIProviderEvents[K]) => void): this;
    removeAllListeners<K extends keyof AIProviderEvents>(event?: K): this;
    listeners<K extends keyof AIProviderEvents>(event: K): Function[];
}
export declare const aiProviderEvents: TypedEventEmitter;
/**
 * Subscribe to rate limit events
 */
export declare function onRateLimitHit(callback: (payload: RateLimitHitPayload) => void): () => void;
/**
 * Subscribe to auth failure events
 */
export declare function onAuthFailed(callback: (payload: AuthFailedPayload) => void): () => void;
/**
 * Subscribe to process events
 */
export declare function onProcessEvent(event: 'spawned' | 'completed' | 'failed', callback: (payload: ProcessSpawnedPayload | ProcessCompletedPayload | ProcessFailedPayload) => void): () => void;
/**
 * Subscribe to circuit breaker state changes
 */
export declare function onCircuitBreakerChange(callback: (payload: CircuitStateChangePayload) => void): () => void;
export {};
//# sourceMappingURL=events.d.ts.map