/**
 * MT-side runOnBackground — dispatches function calls from the Main Thread
 * to the Background Thread via 'Lynx.Sigx.RunOnBackground' events.
 *
 * Called inside extracted worklet bodies on the Main Thread. The SWC LEPUS
 * pass leaves bare `runOnBackground(_jsFnK)` references in the registered
 * worklet body; we install this implementation as `globalThis.runOnBackground`
 * from `entry-main.ts` so the bare identifier resolves at runtime.
 *
 * Mirrors @lynx-js/react/runtime/lib/worklet/call/runOnMainThread (the dual
 * direction) and vue-lynx's run-on-background-mt.ts. Sigx-namespaced event
 * types so we don't conflict with upstream's own bridge if it ships in the
 * same lynx process.
 */
interface JsFnHandle {
    _jsFnId?: number;
    _execId?: number;
    _isFirstScreen?: boolean;
    _error?: string;
}
export declare function runOnBackground(handle: JsFnHandle): (...args: unknown[]) => Promise<unknown>;
export declare function resetRunOnBackgroundMtState(): void;
export {};