export const SIGNAL_PUSH_TIMEOUT_MS: number;
export interface SignalPushOutcome { recorded: boolean; sent: boolean }
export function signalOutcome(answer: unknown): SignalPushOutcome;
export function signalConfirmed(signal: { sent?: boolean; recorded?: boolean } | undefined): boolean;
export function readSignalAnswer(res: { status: number; json(): Promise<unknown> }, payload: { site: string; kind: string }): Promise<SignalPushOutcome>;
export function pushSignal(p: { base: string; secret: string; payload: { site: string; kind: string } & Record<string, unknown>; fetchFn?: typeof fetch }): Promise<SignalPushOutcome>;
export function closeRecord(p: { base: string; secret: string; target: { site: string; kind: string }; fetchFn?: typeof fetch }): Promise<boolean>;