/**
 * Holds mutable streaming state that updates on every streaming chunk
 * without triggering React re-renders. TextNode and InlineCodeNode read
 * from this ref inside effects / callbacks rather than from renderCtx props,
 * so that the renderCtx object can stay referentially stable during streaming.
 */
export interface StreamStateRef {
    /** Map from node key to last-settled text content (shared across renders). */
    textStreamState: Map<string, string>;
    /** Returns the current stream render version counter. */
    getStreamRenderVersion: () => number;
}
/**
 * React Context that carries a stable StreamStateRef.
 * The context value itself never changes (same ref object for the lifetime
 * of the NodeRenderer), so subscribing components do NOT re-render when
 * the stream version increments.  Consumers read the latest value inside
 * effects or callbacks via `ref.getStreamRenderVersion()`.
 */
export declare const StreamStateRefContext: import('react').Context<StreamStateRef>;
/**
 * Hook that returns the nearest StreamStateRef, or null if none is provided.
 */
export declare function useStreamStateRef(): StreamStateRef | null;