import { Ref, MutableRefObject, ComponentType, ReactElement as OriginReactElement, ReactText as OriginReactText, ReactNode as OriginReactNode, ReactChild as OriginReactChild, ReactInstance as OriginReactInstance } from 'react';
export type ReactNodeOrRenderer = ReactNode | (() => ReactNode);
export type ReactElement = OriginReactElement;
export type ReactText = OriginReactText;
export type ReactNode = OriginReactNode;
export type ReactChild = OriginReactChild;
export type ReactInstance = OriginReactInstance;
export declare function refNode(ref: Ref<ReactInstance> | MutableRefObject<ReactInstance> | undefined, node: ReactInstance): void;
export declare function getElementChildren(children: ReactNode | ReactNode[]): ReactElement[];
export declare function findElementChild<P>(children: ReactNode | ReactNode[], type: ComponentType<P>): ReactElement | null;
export declare function pickDerivedStateFromProps<Props = Record<string, unknown>>(nextProps: Props, keys: Array<keyof Props>): Partial<Props> | null;
export declare function getChildrenArray(children: ReactNode): ReactNode[];
export declare function getTextFromReactNode(children: ReactNode): string;