export { } ; let stringUnused ; stringUnused = 'hello' ; stringUnused . trim ( ) ; const stringLiteralUnused = 'hello' ; stringLiteralUnused . trim ( ) ; const arrayOfStringsUnused = [ 'hello' ] ; arrayOfStringsUnused . concat ( arrayOfStringsUnused ) ; const objectUnused = { } ; Object . create ( objectUnused ) ; stringUnused . replace ( 'o' , 'O' ) ;