Sorry but what where you trying to fix?
The tests run through successful in both Node (via mocha), PhantomJS (via simple mocha) and desktop browsers.

@blueimp You could try add a test expect(1, 0), that will NOT fail the test, only expect(1).to.be(0) will, expect(1, 0) actually do nothing.
and tmpl('\'single quotes\'{%=": \'"%}', data) will return escaped ', not '.

You are of course correct. Thanks for your contribution.