import { EventEmitter } from 'events';
export interface ApprovalRequest {
    id: string;
    action: string;
    description: string;
    context?: Record<string, unknown>;
    timeoutMs: number;
    defaultAction: 'approve' | 'deny';
    createdAt: number;
}
export interface ApprovalResponse {
    requestId: string;
    decision: 'approve' | 'deny';
    respondedBy?: string;
    respondedAt: number;
    timedOut: boolean;
}
export type ApprovalHandler = (request: ApprovalRequest) => Promise<ApprovalResponse>;
export interface HITLConfig {
    /** Actions that always require approval */
    requireApproval: string[];
    /** Default timeout in ms */
    defaultTimeoutMs: number;
    /** Default action on timeout */
    defaultAction: 'approve' | 'deny';
}
export declare class HITLManager extends EventEmitter {
    private config;
    private handler;
    private pending;
    private logger;
    constructor(config?: Partial<HITLConfig>);
    setHandler(handler: ApprovalHandler): void;
    needsApproval(action: string): boolean;
    requestApproval(action: string, description: string, context?: Record<string, unknown>): Promise<ApprovalResponse>;
    respond(requestId: string, decision: 'approve' | 'deny', respondedBy?: string): boolean;
    getPending(): ApprovalRequest[];
    private createTimeout;
    private timeoutResponse;
}
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