/**
 * Typed wrapper for the host data extension (`window.host.ext.data`).
 *
 * @example
 * ```ts
 * import { data } from "@polkadot-apps/product-sdk";
 *
 * const connId = await data.connect("/p2p/12D3...");
 * data.onConnected(({ connId, peer }) => console.log("connected", peer));
 * ```
 */
import type { HostEventMap } from "./types.js";
export declare function getPeerId(): Promise<string>;
export declare function connect(peerAddress: string): Promise<number>;
export declare function startListening(address: string): Promise<void>;
export declare function close(connId: number): Promise<void>;
export declare function send(connId: number, data: string): Promise<void>;
export declare function sendBytes(connId: number, data: Uint8Array): Promise<void>;
type Unsub = () => void;
export declare function onConnected(cb: (p: HostEventMap["dataConnected"]) => void): Unsub;
export declare function onMessage(cb: (p: HostEventMap["dataMessage"]) => void): Unsub;
export declare function onBinary(cb: (p: HostEventMap["dataBinary"]) => void): Unsub;
export declare function onClosed(cb: (p: HostEventMap["dataClosed"]) => void): Unsub;
export declare function onError(cb: (p: HostEventMap["dataError"]) => void): Unsub;
export declare function onIncomingCall(cb: (p: HostEventMap["dataIncomingCall"]) => void): Unsub;
export {};
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