/**
 * A pipe for named messages between a page runtime and the DevTools: the one
 * interface on both ends. The page runtime's {@link pageChannel} rides one;
 * the DevTools host's `TimelineChannelCodec` rides another. Adapters: Vite's
 * HMR channel ({@link fromViteHot}, on the page's `import.meta.hot` and the
 * server's `server.hot` alike), devframe RPC events (`rpc-transport.ts`, and
 * `rpcPageTransport` on the host), a `chrome.runtime.Port`
 * (`portPageTransport`) and `window.postMessage` (`window-transport.ts`).
 *
 * Side-effect free, unlike `page-channel.ts`, so a Node host can use the
 * Vite adapter without creating the page's channel.
 */
/** A carrier for named messages between the page runtime and the server. */
export interface PageTransport {
    send(channel: string, data?: unknown): void;
    /** Listen on a channel. Returns the function that removes the listener. */
    on(channel: string, handler: (data: unknown) => void): () => void;
}
/** The slice of `import.meta.hot` the default carrier relies on. */
export interface ViteHotLike {
    send(event: string, data?: unknown): void;
    on(event: string, handler: (data: any) => void): void;
    off?(event: string, handler: (data: any) => void): void;
}
/** Wraps Vite's HMR client as a {@link PageTransport}. */
export declare const fromViteHot: (hot: ViteHotLike) => PageTransport;
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