objc:string

(objc:string "text")

An NSString holding the text. A Lisp string passed directly to an object parameter of objc:send is converted the same way, so this is for the cases where the string itself is the value you keep. Part of the macOS-only objc package -- the interpreter (java -jar, or the rontolisp native binary) and a compiled .class / .jar, never a .wasm; on a machine without the runtime it signals an error. See the macOS GUI guide.

CL-USER> (objc:send (objc:string "hello") "length")
5
CL-USER> (objc:send (objc:send (objc:string "hello") "uppercaseString") "UTF8String")
"HELLO"