import type { EffectHandler } from "./types.js";
/**
 * Adapts an Effect-producing callback to a native SvelteKit server handler.
 * SvelteKit continues to select the handler by its exported binding name, such
 * as `GET`, `PUT`, or `load`.
 *
 * @example A `+server.ts` request handler:
 * ```ts
 * import { Handler } from "svelte-effect-runtime/server";
 * import type { RequestHandler } from "./$types";
 *
 * export const GET = Handler<RequestHandler>(function* ({ params }) {
 *   const post = yield* Posts.get(params.slug);
 *
 *   return Response.json(post);
 * });
 * ```
 *
 * @example A `+page.server.ts` load function:
 * ```ts
 * import { Handler } from "svelte-effect-runtime/server";
 * import type { PageServerLoad } from "./$types";
 *
 * export const load = Handler<PageServerLoad>(function* ({ locals }) {
 *   const profile = yield* Profiles.get(locals.user.id);
 *
 *   return { profile };
 * });
 * ```
 *
 * @since 4.0.0
 * @param handler - Effect-producing callback whose parameters and successful
 *   result match the native SvelteKit handler type.
 * @returns A native handler that runs the callback through the configured
 *   {@link ServerRuntime} with the current {@link RequestEvent} available.
 */
export declare function Handler<NativeHandler extends (...arguments_: never[]) => unknown>(handler: EffectHandler<NativeHandler>): NativeHandler;