Is this an arrow function declaration? Is there such a thing?

Question

I am looking into function expressions vs function declarations using arrow functions.

I am thinking this is an arrow function expression:

const johan = greeting = () => {
  console.log("Hi from arrow function expression");
};

and that this is an arrow function decleration:

 ludwig = () => {
  console.log("Hi from arrow function declaration");
};

Is that correct? Or maybe there is no such thing as an arrow function declaration? Maybe there is only arrow function expressions?

If so, what is it called when I put a named arrow function expression in another variable?

Happy for any answer! :)

Answer 1

No.

There are function declarations, function expressions, and arrow functions (the syntax which creates them also being an expression).

(There are also method declarations which can use arrow functions.)

ludwig = () => {
  console.log("Hi from arrow function declaration");
};

This is assigning a value (an arrow function) to a variable.

The variable declaration is missing, so either it appeared earlier or this creates an implicit global (which is forbidden in strict mode).