/**
 * ComposeDB server for hybrid execution on the {@linkcode client ComposeDB client}.
 *
 * ## Installation
 *
 * ```sh
 * npm install @composedb/server
 * ```
 *
 * @module server
 */
import type { DocumentCache } from '@composedb/loader';
import { type Context } from '@composedb/runtime';
import type { CeramicAPI, RuntimeCompositeDefinition } from '@composedb/types';
import type { GraphQLSchema } from 'graphql';
import { type YogaServerInstance, type YogaServerOptions } from 'graphql-yoga';
/**
 * Returns the viewer ID sent by the client, if set.
 */
export declare function getViewerID(request: Request): string | null | undefined;
export type HandlerParams<ServerContext extends Record<string, unknown> = Record<string, unknown>> = {
    /**
     * Optional cache for documents.
     */
    cache?: DocumentCache;
    /**
     * Ceramic client instance or HTTP URL.
     */
    ceramic: CeramicAPI | string;
    /**
     * Runtime composite definition, created using the {@linkcode devtools.Composite Composite}
     * development tools.
     */
    definition?: RuntimeCompositeDefinition;
    /**
     * {@link https://the-guild.dev/graphql/yoga-server/docs Yoga server} options.
     */
    options?: YogaServerOptions<ServerContext, Context>;
    /**
     * GraphQL Schema to use, ignores the `definition` parameter if provided.
     */
    schema?: GraphQLSchema;
};
/**
 * Create a {@link https://the-guild.dev/graphql/yoga-server/docs Yoga server} handling GraphQL requests.
 */
export declare function createHandler<ServerContext extends Record<string, unknown> = Record<string, unknown>>(params: HandlerParams<ServerContext>): YogaServerInstance<ServerContext, Context>;
export type GraphQLServer = {
    port: number;
    stop: () => Promise<void>;
};
export type GraphQLParams<ServerContext extends Record<string, unknown> = Record<string, unknown>> = HandlerParams<ServerContext> & {
    port?: number | Array<number>;
};
/**
 * Start a local GraphQL server.
 */
export declare function startGraphQLServer<ServerContext extends Record<string, unknown> = Record<string, unknown>>(params: GraphQLParams<ServerContext>): Promise<GraphQLServer>;