/**
 * Used to access the internal unsubscribe function that exists on a wrapped client
 *
 * We might eventually move the unsubscribe method to a single "internals" object
 * which could contain the `.call()` method among other internal functionality.
 *
 * @internal
 */
declare const SYMBOL_TRANSPORT_UNSUBSCRIBE: unique symbol;

type API = {
    [Key in string]: API | ((...args: any[]) => unknown);
};
type WrapAPIToClient<T> = {
    [K in keyof T]-?: T[K] extends (...args: any[]) => any ? ReturnType<T[K]> extends Promise<any> ? T[K] : (...args: Parameters<T[K]>) => Promise<ReturnType<T[K]>> : T[K] extends object ? WrapAPIToClient<T[K]> : never;
} & {
    [SYMBOL_TRANSPORT_UNSUBSCRIBE]: () => void;
};
declare namespace Protocol {
    interface Request {
        type: 'request';
        nonce: string;
        path: string;
        args: unknown[];
    }
    namespace Response {
        interface Success extends CallerResultSuccess {
            type: 'response';
            nonce: string;
        }
        interface Failure extends CallerResultFailure {
            type: 'response';
            nonce: string;
        }
    }
    type Response = Response.Success | Response.Failure;
    type Message = Request | Response;
}
interface TransportOptions {
    call: (path: string, args: unknown[]) => Promise<CallerResult>;
    send: (message: Protocol.Message) => void;
    subscribe: (listener: (event: Protocol.Message) => void) => () => void;
}

interface CallerResultSuccess {
    success: true;
    data: unknown;
}
interface CallerResultFailure {
    success: false;
    message: string;
}
type CallerResult = CallerResultSuccess | CallerResultFailure;
/**
 * Calls a function by looking up the path in the API
 *
 * @param api The API to call
 * @param path The path to the function to call
 * @param args The arguments to pass to the function
 *
 * @returns A result type that is either a success with the result of the function call or a failure with an error message
 */
declare function call(api: API, path: string, args: unknown[]): Promise<CallerResult>;

export { type API as A, type CallerResultSuccess as C, Protocol as P, SYMBOL_TRANSPORT_UNSUBSCRIBE as S, type TransportOptions as T, type WrapAPIToClient as W, type CallerResultFailure as a, type CallerResult as b, call as c };