import { NodeDefinition, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
/**
 * An instance of the [[root]] node.
 * See the [[root]] documentation to find out more.
 */
export interface RootNode extends StatelessGraphNode<'root'> {
}
/**
 * A definition of the [[root]] node.
 * See the [[root]] documentation to find out more.
 */
export interface RootNodeDefinition extends StatelessNodeDefinition<'root'> {
}
export declare const ROOT_CONTEXT_NAME: unique symbol;
/**
 * The implementation of the [[root]] node.
 * See the [[root]] documentation to learn more.
 */
export declare const RootNodeType: StatelessNodeType<'root'>;
/**
 * Creates a new instance of a [[root]] node, which is used when you want to get the instance of the root graph node.
 * Resolving this node gets the top-most node of the graph.
 *
 *
 * @example **Get the root node**
 * ```js
 * import muster, { computed, root, value } from '@dws/muster';
 *
 * const app = muster(value('World'));
 *
 * const greeting = await app.resolve(
 *   computed([root()], (name) => `Hello, ${name}`),
 * );
 * // greeting === 'Hello, World'
 * ```
 * This example shows how to use the [[root]] to get access to the root node of the graph.
 */
export declare function root(): RootNodeDefinition;
export declare function isRootNodeDefinition(value: NodeDefinition): value is RootNodeDefinition;