Is it possible to overload properties?

Question

typescript

Is it possible to do something like this?

interface Field {
    a: string;
}
interface Field {
    a: string;
    b: string;
    c: string;
}

To allow TypeScript to create interface instances with properties a or a,b,c? Or just create a new interface via extends?

Answer 1

Why not just make them optional?

interface Field {
  a: string;
  b?: string;
  e?: string;
}

Answer 2

What was written (extension) is possible, but cannot be redefined:

interface Field {
    a: string;
}
interface Field {
    a: number;
    b: string;
    c: string;
}

That's not how it works, and even like this a: string | number won't work.