import { type Reply } from './client.js';
import type { HelloFields, Tier } from './protocol.js';
export type JoinInput = Omit<HelloFields, 'tier' | 'capabilities' | 'tags'> & {
    /** Defaults to `session`; processes Monomind launches register as `external` / `org-role`. */
    tier?: Tier;
    capabilities?: string[];
    tags?: string[];
};
type Call = (req: Record<string, unknown>) => Promise<Reply>;
/**
 * `call` may start a hub (join, heartbeat re-registration); `byeCall` must not: saying goodbye to a
 * hub that is already gone is not worth starting one.
 */
export declare function createSessionPresence(call?: Call, intervalMs?: number, byeCall?: Call, 
/** Told the credentials whenever they change (join, re-registration) and when they go away. */
onAuth?: (auth: {
    addr: string;
    key: string;
    alias?: string;
} | undefined) => void): {
    join: (i: JoinInput) => Promise<string>;
    leave: () => Promise<void>;
    addr: () => string | undefined;
    /** The address and key hub calls made on this session's behalf must carry. */
    auth: () => {
        addr: string;
        key: string;
    } | undefined;
};
export declare const sessionPresence: {
    join: (i: JoinInput) => Promise<string>;
    leave: () => Promise<void>;
    addr: () => string | undefined;
    /** The address and key hub calls made on this session's behalf must carry. */
    auth: () => {
        addr: string;
        key: string;
    } | undefined;
};
export {};
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