A (perhaps) useful thing to keep in mind.

[Allen Wirfs-Brock]

On Nov 22, 2011, at 8:21 AM, Jorge wrote:

> It seems that all of these are equally valid ways to say "function ƒ () { ... }" :
> 
> function ƒ () { ... }
> function ƒ () {{ ... }}

Actually these can have slightly different static semantics in ES.next

function f(arg) {
   let arg = 42;   //early error duplicate declaration of 'arg
}

function f(arg) {{
   let arg = 42;   //block level declaration of 'arg' shadows formal parameter
}}

Allen