const uppercase: () => ( text: string, render: any ) => any = () => { return ( text, render ) => { return render( text ).toUpperCase(); }; }; const lowercase: () => ( text: string, render: any ) => any = () => { return ( text, render ) => { return render(text).toLowerCase(); }; }; const capitalize: () => ( text: string, render: any ) => any = () => { return ( text, render ) => { return render( text ).charAt(0).toUpperCase() + render( text ).slice(1).toLowerCase(); }; }; export default { uppercase, lowercase, capitalize };