import { NodeDefinition, NodeLike, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
/**
 * An instance of the [[trim]] node.
 * See the [[trim]] documentation to find out more.
 */
export interface TrimNode extends StatelessGraphNode<'trim', TrimNodeProperties> {
}
/**
 * A definition of the [[trim]] node.
 * See the [[trim]] documentation to find out more.
 */
export interface TrimNodeDefinition extends StatelessNodeDefinition<'trim', TrimNodeProperties> {
}
export interface TrimNodeProperties {
    subject: NodeDefinition;
}
/**
 * The implementation of the [[trim]] node.
 * See the [[trim]] documentation to learn more.
 */
export declare const TrimNodeType: StatelessNodeType<'trim', TrimNodeProperties>;
/**
 * Creates a new instance of a [[trim]] node, which is used for trimming white-spaces from the string-based [[value]]s.
 * The node expects the subject to be a [[value]] containing a string value. It works in a
 * similar way to the `String.trim` method from JS.
 *
 *
 * @example **Trim a string**
 * ```js
 * import muster, { trim } from '@dws/muster';
 *
 * const app = muster({});
 *
 * await app.resolve(trim('  Hello world  '));
 * // === 'Hello world'
 *
 * await app.resolve(trim('Hello world'));
 * // === 'Hello world'
 * ```
 */
export declare function trim(subject: NodeLike): TrimNodeDefinition;
export declare function isTrimNodeDefinition(value: NodeDefinition): value is TrimNodeDefinition;