Unable to recognize arrow function IIFE

[Rongronggg9]

https://developer.mozilla.org/en-US/docs/Glossary/IIFE

(function () {
  let foo = 'bar';
})();

(() => {
  let foo = 'bar';
})();

(async () => {
  let foo = 'bar';
})();

(function(){let a='bar'})();()=>{let a='bar'}();async()=>{let a='bar'}()

Uncaught SyntaxError: unexpected token: '('      debugger eval code:1:45

Should be:

(function(){let a='bar'})();(()=>{let a='bar'})();(async()=>{let a='bar'})()
//                          ^                 ^   ^                      ^

[wilsonzlin]

Thanks for raising, this has been fixed in the latest version 0.4.2, let me know if it works on your end.