I'm trying to return an object from an arrow function, like this function f:

myMethod(f: data => { 
  return { someField: data.something };
});

I know that for simple types you can shrink the arrow function to just be data => data.something.

Is this possible when you are returning an object i.e. something like this:

myMethod(f: data => { someField: data.something });

That doesn't compile, I assume because the compiler thinks the { is the start of a function, not the start of an object.

Is there a syntax here which works, or should I just carry on using the longer form with the return in?