import { MessengerMeta } from "./parts/meta.js";
import { Conduit } from "./conduits/conduit.js";
import { Tap, Fns } from "../../core/types.js";
export type MessengerRpc<LocalFns extends Fns, RemoteFns extends Fns> = (meta: MessengerMeta<RemoteFns>) => Promise<LocalFns>;
export declare function asMessengerRpc<LocalFns extends Fns, RemoteFns extends Fns>(mrpc: MessengerRpc<LocalFns, RemoteFns>): MessengerRpc<LocalFns, RemoteFns>;
export type MessengerOptions<LocalFns extends Fns, RemoteFns extends Fns> = {
    conduit: Conduit;
    tap?: Tap;
    timeout?: number;
    rpc?: MessengerRpc<LocalFns, RemoteFns>;
};
export type ChannelMessage<D = any> = {
    data: D;
    origin: string;
};
export type Channel = {
    addEventListener(e: "message", listener: (event: ChannelMessage) => void): void;
    removeEventListener(e: "message", listener: (event: ChannelMessage) => void): void;
};
export type PostableChannel = {
    postMessage(m: any, transfer?: Transferable[]): void;
} & Channel;