import { NodeDefinition, StatelessGraphNode, StatelessNodeDefinition, StatelessNodeType } from '../../types/graph';
/**
 * An instance of the [[identity]] node.
 * See the [[identity]] documentation to learn more.
 */
export interface IdentityNode extends StatelessGraphNode<'identity', IdentityNodeProperties> {
}
/**
 * A definition of the [[identity]] node.
 * See the [[identity]] documentation to learn more.
 */
export interface IdentityNodeDefinition extends StatelessNodeDefinition<'identity', IdentityNodeProperties> {
}
export interface IdentityNodeProperties {
}
/**
 * The implementation of the [[identity]].
 * See the [[identity]] documentation to learn more.
 */
export declare const IdentityNodeType: StatelessNodeType<'identity', IdentityNodeProperties>;
/**
 * Creates a new instance of a [[identity]] node, which works in the same way as an `identity` function
 * from `lodash`. It implements a `call` operation that returns a first argument it was called with.
 */
export declare function identity(): IdentityNodeDefinition;
export declare function isIdentityNodeDefinition(value: NodeDefinition): value is IdentityNodeDefinition;