import { EventBus } from '../external-rpc/event-bus.ts';
import type { ExternalRPCAppClient, ExternalRPCIncomingMsg, ExternalRPCOutgoingMsg, ExternalRPCRequest, ExternalRPCResponse } from '../external-rpc/types.ts';
export declare const RPC_MSG_BRIDGE: EventBus<ExternalRPCIncomingMsg>;
export declare function getCurrentMemoryUsage(): Promise<{
    available: boolean;
    content: string;
}>;
export declare function generateRpcRequestId(): string;
/**
 * The window RPC will be served from the same origin as the API server.
 * so we can get the API server's origin from the location.
 */
export declare function getWsApiUrlFromBaseUrl(): string;
export declare function rpcRequest<T extends keyof ExternalRPCAppClient>(opts: ExternalRPCRequest<ExternalRPCAppClient, T>): Promise<ExternalRPCResponse<ExternalRPCAppClient, T>['response']>;
export declare function waitForResponse<T extends keyof ExternalRPCAppClient>(type: T, requestId: string, timeoutMs?: number): Promise<Awaited<ReturnType<ExternalRPCAppClient[T]>>>;
/**
 * Sends a message back to the host app
 * @param data
 */
export declare function sendMessageToApp(data: ExternalRPCOutgoingMsg): void;