import React from 'react';
export declare const toTitleCase: (str: string) => string;
export declare const isReactFragment: (node: React.ReactNode | typeof React.Fragment) => boolean;
export declare const wrapWithElementIfInvalid: ({ node, wrapper, props, }: {
    node: React.ReactNode;
    wrapper: React.ReactElement;
    props?: any;
}) => React.ReactElement<any, string | React.JSXElementConstructor<any>>;
export declare const isSingleStringChild: (children?: React.ReactNode) => boolean | "" | 0 | null | undefined;