import type { ApprovalDecision, ApprovalRequest } from "./types.js";
import { HoomanToolApprovalIntervention } from "../core/approvals/intervention.js";
import type { ToolApprovalRequest } from "../core/approvals/intervention.js";
export declare class ChatApprovalController {
    private readonly queue;
    private readonly listeners;
    private nextId;
    subscribe(listener: () => void): () => void;
    get pending(): ApprovalRequest | null;
    request(request: ToolApprovalRequest): Promise<ApprovalDecision>;
    decide(decision: ApprovalDecision): void;
    private emit;
}
export declare function createChatApprovalIntervention(controller: ChatApprovalController): HoomanToolApprovalIntervention;