import type { AgentInfo, HelloFields, MeshMessage, MessageKind, WhoFilter } from './protocol.js';
/** Rows `list` returns when the caller gives no limit. */
export declare const DEFAULT_LIST_LIMIT = 200;
export declare class StoreError extends Error {
    readonly code: 'ALIAS_TAKEN' | 'LIMIT' | 'INBOX_FULL';
    constructor(code: 'ALIAS_TAKEN' | 'LIMIT' | 'INBOX_FULL', message: string);
}
/** Sole-writer presence store. Only the hub opens it. */
export declare class MeshStore {
    private readonly db;
    private constructor();
    static open(file: string): Promise<MeshStore>;
    upsertAgent(addr: string, h: HelloFields, now: number): void;
    /** Remembers who owns a live address. Only a hash is stored, never the key itself. */
    setKeyHash(addr: string, hash: string, nonceHash?: string): void;
    /** Hash of the nonce the current owner registered with, if it sent one. */
    nonceHashOf(addr: string): string | undefined;
    /** The owner's key hash, or undefined when the address is free (unknown, gone, or never keyed). */
    keyHashOf(addr: string): string | undefined;
    /** False when the agent is unknown or already gone (the caller must re-register). */
    heartbeat(addr: string, now: number, task?: string): boolean;
    bye(addr: string): void;
    sweep(now: number, staleMs: number, goneMs: number, isAlive: (pid: number) => boolean, pruneGoneMs?: number): {
        stale: string[];
        gone: string[];
    };
    list(filter?: Partial<WhoFilter>, limit?: number): AgentInfo[];
    /** The live address `to` names: a full address, or an alias in `project`. */
    resolve(project: string, to: string): string | undefined;
    /** The project an address belongs to, or undefined when it is not registered. */
    projectOf(addr: string): string | undefined;
    addMessage(from: string, to: string, kind: MessageKind, body: string, now: number, replyTo?: number): number;
    /** Oldest unread first; marks them read unless `peek`. */
    takeInbox(addr: string, limit: number, peek: boolean): {
        messages: MeshMessage[];
        more: number;
    };
    liveCount(): number;
    close(): void;
}
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