import { NodeDefinition, NodeLike, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
/**
 * An instance of the [[sqrt]] node.
 * See the [[sqrt]] documentation to find out more.
 */
export interface SqrtNode extends StatelessGraphNode<'sqrt', SqrtNodeProperties> {
}
/**
 * A definition of the [[sqrt]] node.
 * See the [[sqrt]] documentation to find out more.
 */
export interface SqrtNodeDefinition extends StatelessNodeDefinition<'sqrt', SqrtNodeProperties> {
}
export interface SqrtNodeProperties {
    operand: NodeDefinition;
}
/**
 * The implementation of the [[sqrt]] node.
 * See the [[sqrt]] documentation to learn more.
 */
export declare const SqrtNodeType: StatelessNodeType<'sqrt', SqrtNodeProperties>;
/**
 * Creates a new instance of a [[sqrt]] node, which is a type of [[NodeDefinition]] used to compute
 * a square root of a given number for number-based [values](_nodes_graph_value_.html#value).
 * @returns {SqrtNodeDefinition}
 *
 *
 * @example **Square root of four**
 * ```js
 * import muster, { sqrt, ref } from '@dws/muster';
 *
 * const app = muster({
 *   four: 4,
 * });
 *
 * const result = await app.resolve(sqrt(ref('four')));
 * // result === 2
 * ```
 * This example shows how to use [[sqrt]] node.
 */
export declare function sqrt(operand: NodeLike): SqrtNodeDefinition;
export declare function isSqrtNodeDefinition(value: NodeDefinition): value is SqrtNodeDefinition;