First of all, thanks for all the work on this project!

I tried out Transcript and the end of each generated .js file looks like this:

window ['test'] = test ();

This fails on Node.js because there is no window object when running javascript on the server:

$ node __javascript__/test.js

/Users/ageitgey/Desktop/__javascript__/test.js:977
window ['test'] = test ();
^

ReferenceError: window is not defined

To make the generated code work on Node.js, all you have to do is remove is this:

// Original code
window ['test'] = test ();

// Change to:
test ();

I know your main use case might be to generate .js to run in the browser. But would it be possible to support generating code that doesn't assume there is a window object? Maybe it could be done via an optional parameter if you prefer the current behavior?