is it possible to delcare an anonymous non-IIFE JavaScript function with a property

Question

I have on one occasion found it useful to assign properties to functions before passing them as arguments to other functions.

That looked like this (sorry about any confu

Answer 1

Another way of doing this would be with a helper function:

const addProp = (fn, value) => { fn.process = value; return fn; };

const myFunc = addProp((arg1, arg2) => arg1 + arg2, true);

console.log(myFunc.process); // => true
console.log(myFunc(1, 2));   // => 3

You could probably also do this with a decorator, although that's a proposal for future versions of ECMASCript and would require transpilation to work.