/**
 * Hybrid worklet — combines a user worklet handler and a BG-side handler
 * into a single registration that fits Lynx's one-handler-per-slot rule.
 *
 * Registered ONCE at MT init under the stable id `__sigx_hybrid_dispatch__`
 * in upstream's `lynxWorkletImpl._workletMap`. When the slot machine sees a
 * slot with both a worklet and a BG sign, it asks `hybridCtx(worklet, sign)`
 * for the ctx to hand to `__AddEvent({ type: 'worklet', value })`.
 *
 * Lynx native dispatches via `runWorklet` → upstream's `transformWorklet`
 * walks the ctx and `_c`. It detects nested `_wkltId` (our `realCtx`) and
 * replaces it with the bound user-worklet callable. Our hybrid body then
 * just invokes it, then bridges to BG via the `Lynx.Sigx.PublishEvent`
 * channel that `bg-bridge.ts` listens on.
 */
import type { WorkletPlaceholder } from './worklet-events.js';
export declare const HYBRID_WORKLET_ID = "__sigx_hybrid_dispatch__";
/**
 * Install the hybrid worklet into upstream's worklet map. Must be called
 * AFTER the @lynx-js/react/worklet-runtime IIFE has populated
 * globalThis.lynxWorkletImpl. Idempotent — safe to call across hot reloads.
 */
export declare function installHybridWorklet(): void;
/** Build the ctx for a hybrid registration. */
export declare function hybridCtx(realCtx: WorkletPlaceholder, bgSign: string): {
    _wkltId: string;
    _workletType: 'main-thread';
    _c: {
        realCtx: WorkletPlaceholder;
        bgSign: string;
    };
};