/**
 * Relay REST request handler (CLI side).
 *
 * Translates an inbound `RestRequestFrame` into a `dispatchRoute` call and
 * maps handler errors to status codes (400/404/409/500). Errors thrown by
 * handlers are returned in the body, never re-thrown — the backend has a
 * 30 s pending-request timeout and we want every request to terminate with
 * a wire response so the browser doesn't sit on a stale spinner.
 *
 * Extracted from `relay/dispatcher.ts` — the dispatcher re-exports
 * `handleRestRequest` so existing imports keep working.
 */
import type { RestRequestFrame, RestResponseFrame } from "@aexol/relay-protocol";
import { type RestRequestDeps } from "./routing.js";
/**
 * Dispatch a `rest_request` frame. Always resolves with a
 * `RestResponseFrame` — handler exceptions are caught and translated.
 *
 * Status mapping:
 *  - 200: handler returned successfully (body is the handler's return value
 *         or `{ ok: true }` for void returns)
 *  - 400: `BadRequestError` thrown by handler, OR malformed body for a
 *         route that requires one, OR unknown route
 *  - 404: `NotFoundError` thrown by handler
 *  - 409: `ConflictError` thrown by handler (e.g. mkdir on an existing path)
 *  - 405: route matches but method doesn't (returned as 404 since we don't
 *         distinguish — the matcher treats it as "no route", consistent
 *         with the original Hono router which also 404'd)
 *  - 500: anything else; `error` field carries a sanitized message
 */
export declare function handleRestRequest(frame: RestRequestFrame, deps: RestRequestDeps): Promise<RestResponseFrame>;
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