TypeScript typeof Function return value

Question

Admit I have a function like this

const createPerson = () => ({ firstName: \'John\', lastName: \'Doe\' })

How can I, without dec

Answer 1

This https://github.com/Microsoft/TypeScript/issues/4233#issuecomment-139978012 might help:

let r = true ? undefined : someFunction();
type ReturnType = typeof r;