Bug in if statement parsing in v3.9

[JennaSys]

I was doing some regression testing between Transcrypt v3.7 and v3.9 on an existing application and found what looks like a possible bug.

Starting with this Python function:

    def deleteBook():
        if confirm(f"Are you sure you want to delete {book.Title}?"):
            fetch(f"/api/book", on_update_success,
                  method='DELETE', data=book, onError=on_update_error)

Transcrypt 3.7 transpiles to this (which works in the browser):

  var deleteBook = function deleteBook() {
    if ((0, _commonJsutils.confirm)('Are you sure you want to delete {}?'.format(book.Title))) {
      (0, _commonUrlutils.fetch)('/api/book'.format(), on_update_success, (0, _orgTranscrypt__runtime__.__kwargtrans__)({
        method: 'DELETE',
        data: book,
        onError: on_update_error
      }));
    }
  };

But Transcrypt 3.9 transpiles it to this (which results in a runtime error):

    var deleteBook = function() {
        if (_commonJsutilsJs.confirm('Are you sure you want to delete {}?'.format(book.Title))) _commonUrlutilsJs.fetch('/api/book'.format(), on_update_success, _orgTranscryptRuntimeJs.__kwargtrans__({
            method: 'DELETE',
            data: book,
            onError: on_update_error
        }));
    };

I can give more detail about the functions being called in the example if needed, or will work on coming up with a minimum example if required.

[JennaSys]

Never mind, I think this might be an issue with the new version 2 of the Parcel bundler. I'll close and re-open later if necessary.