Static property

[ulyssesric]

Apparently the latest version failed to handle static fields in class.

Try to minify sample codes from developer.mozilla.org:

class ClassWithStaticMethod {
  static staticProperty = 'someValue';
  static staticMethod() {
    return 'static method has been called.';
  }
  static {
    console.log('Class static initialization block called');
  }
}

and get the error: "Parse error: Unexpected token: operator (=)"

[Skalman]

The issue is that we're stuck on an old version. I'll merge a PR updating to the latest version, if you submit one.