What are two unique features of functions defined with a fat arrow as compared to...

The function generated its own this making it useful for separating the function’s scope from its enclosing scope.

The function receives an argument that is always in scope, called parentThis, which is the enclosing lexical scope. C. If the function has a single expression in the function body, the expression will be evaluated and implicit returned.

The function uses the this from the enclosing scope.