import type { InitMsg } from "../transport/protocol";
import type { WorkerRenderer } from "./renderer.worker";
/**
 * Adapter that satisfies the `MessagePort` shape `WorkerRenderer`
 * expects (it only ever calls `.postMessage` on it). Outgoing posts
 * get session-tagged on the way out so the host can route them to
 * the right `RendererTransport` instance.
 *
 * The receive direction is handled exclusively by the worker-scope
 * `self.addEventListener("message", …)` installed by `installSessionHost`;
 * this adapter does not own a real port pair.
 */
export declare function makeSessionPort(sessionId: number): MessagePort;
/**
 * Install the shared message handler on the worker scope. One worker
 * process hosts many `WorkerRenderer` instances, one per `sessionId`
 * allocated by the host's `RendererTransport`; this listener
 * demultiplexes incoming `ControlEnvelope`s and routes them to the
 * matching renderer.
 *
 * The `bootstrap` callback constructs a `WorkerRenderer` from an
 * `InitMsg` and a session-tagged port. It's injected so this module
 * doesn't need to import `renderer.worker` for runtime bindings (avoids
 * a runtime cycle — `renderer.worker` imports this module).
 */
export declare function installSessionHost(bootstrap: (msg: InitMsg, port: MessagePort) => Promise<WorkerRenderer>): void;