Declare a delegate type in Typescript

Question

Coming from a C# background, I want to create a datatype that defines a function signature. In C#, this is a delegate declared like this:

delegate v         


        

Answer 1

I now publish and use @steelbreeze/delegate; it has a few limitations compared to the C# delegate, in that it's immutable, but otherwise works well (and when called returns results from all the functions called).

It lets you write code such as:

import { create as delegate } from "@steelbreeze/delegate";

function world(s: string) {
    console.log(s + " world");
}

const one = delegate(s => console.log(s + " Hello world"));
const two = delegate(s => console.log(s + " Hello"), world);

one("A");
two("B");

delegate(one, two)("C");