import { NodeDefinition, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
import { OtherwiseNodeDefinition } from './otherwise';
import { WhenNodeDefinition } from './when';
/**
 * An instance of the [[choose]] node.
 * See the [[choose]] documentation to find out more.
 */
export interface ChooseNode extends StatelessGraphNode<'choose', ChooseNodeProperties> {
}
/**
 * A definition of the [[choose]] node.
 * See the [[choose]] documentation to find out more.
 */
export interface ChooseNodeDefinition extends StatelessNodeDefinition<'choose', ChooseNodeProperties> {
}
export interface ChooseNodeProperties {
    options: Array<WhenNodeDefinition>;
    fallback: OtherwiseNodeDefinition;
}
/**
 * The implementation of the [[choose]] node.
 * See the [[choose]] documentation to learn more.
 */
export declare const ChooseNodeType: StatelessNodeType<'choose', ChooseNodeProperties>;
/**
 * Creates a new instance of a [[choose]] node, which is used to conditionally return a different value. It works in a similar
 * way to the [[ifElse]] node, but allows for a more concise definition when defining
 * more than one condition.
 *
 * The conditions are defined with the help of [[case]] and [[otherwise]] nodes.
 * Each [[switchOn]] can define any number of [[case]] cases, and MUST define exactly one [[otherwise]] node.
 *
 *
 * @example **Simple choose node**
 * ```js
 * import muster, {
 *   eq,
 *   choose,
 *   gt,
 *   otherwise,
 *   ref,
 *   variable,
 *   when,
 * } from '@dws/muster';
 *
 * const app = muster({
 *   input: variable(10),
 *   something: choose([
 *     when(eq(ref('input'), 10), 'It\'s ten!'),
 *     when(gt(ref('input'), 32), 'More than 32'),
 *     otherwise('Well, it\'s not ten and not more than 32'),
 *   ]),
 * });
 *
 * await app.resolve(ref('something')); // === It's ten!
 * ```
 */
export declare function choose(cases: Array<WhenNodeDefinition | OtherwiseNodeDefinition>): ChooseNodeDefinition;
export declare function isChooseNodeDefinition(value: NodeDefinition): value is ChooseNodeDefinition;