/**
 * Stream State Route
 *
 * GET /stream/state - Server-Sent Events stream for state updates only.
 * Uses JSON Patch (RFC 6902) for efficient delta updates.
 */
import { Hono } from "hono";
import type { Runtime, Action } from "@gizmo-ai/runtime";
import type { EventEmitter } from "events";
export interface StreamStateRouteConfig<S extends Record<string, unknown>, A extends Action> {
    runtime: Runtime<S, A>;
    bus: EventEmitter;
    slices?: string[];
    /** Function to get resolved slices (accounts for auto-filtering) */
    resolvedSlices?: (state: S) => string[];
    heartbeatInterval: number;
    serializer: (value: unknown) => string;
}
/**
 * Create the state stream route
 */
export declare function createStreamStateRoute<S extends Record<string, unknown>, A extends Action>(config: StreamStateRouteConfig<S, A>): Hono;
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