Get Transcrypt to output readable files

I'm trying to translate the following test code with Transcrypt:

class A(object):
    def __init__(self):
        self.a = 5

The output is a 2447 line file:

$ transcrypt test.py -fb -e 6
$ wc -l __javascript__/test.js
2447 __javascript__/test.js

How can I get Transcrypt to generate sane output for this input? Thanks