import React from 'react' ; import './theme-switcher.css' ; interface ThemeSwitcherProps { currentTheme : string ; onSubmit : ( e : React . FormEvent < HTMLFormElement > ) => void ; } const ThemeSwitcher = ( props ) => ( < form className = { `theme-switcher ${ props . currentTheme }` } onSubmit = { props . onSubmit } > < button className = "btn btn-outline btn-outline-dark" type = "submit" > Switch theme ( { ( props . currentTheme === 'light' ) ? 'Light' : 'Night' } ) < /button> < /form>); export default ThemeSwitcher ;