import { NodeDefinition, NodeLike, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
/**
 * An instance of the [[sentenceCase]] node.
 * See the [[sentenceCase]] documentation to find out more.
 */
export interface SentenceCaseNode extends StatelessGraphNode<'sentence-case', SentenceCaseNodeProperties> {
}
/**
 * A definition of the [[sentenceCase]] node.
 * See the [[sentenceCase]] documentation to find out more.
 */
export interface SentenceCaseNodeDefinition extends StatelessNodeDefinition<'sentence-case', SentenceCaseNodeProperties> {
}
export interface SentenceCaseNodeProperties {
    subject: NodeDefinition;
}
/**
 * The implementation of the [[sentenceCase]] node.
 * See the [[sentenceCase]] documentation to learn more.
 */
export declare const SentenceCaseNodeType: StatelessNodeType<'sentence-case', SentenceCaseNodeProperties>;
/**
 * Creates a new instance of a [[sentenceCase]] node, which is used when converting a string to a sentence case string.
 * The node expects the subject to be a [[value]] that contains a string value. It works in a
 * similar way to the `upperFirst` function from `lodash`.
 *
 *
 * @example **Convert string to upper case**
 * ```js
 * import muster, { sentenceCase } from '@dws/muster';
 *
 * const app = muster({});
 *
 * await app.resolve(sentenceCase('hello world'));
 * // === 'Hello world'
 *
 * await app.resolve(sentenceCase('Hello World'));
 * // === 'Hello World'
 *
 * await app.resolve(sentenceCase('hello WORLD'));
 * // === 'Hello WORLD'
 * ```
 */
export declare function sentenceCase(subject: NodeLike): SentenceCaseNodeDefinition;
export declare function isSentenceCaseNodeDefinition(value: NodeDefinition): value is SentenceCaseNodeDefinition;