Web IDE vs Espruino Tools minification

Yes, now it works ! The resulting number of bytes from the message 'No errors. Minified xxx bytes to yyy bytes.' is identical in both cases, so chances are both builds come up with the exact same result.

As it happens, in this case the esmangle development has been really flaky

I also struggle with the 'wonderful world' of open source modules. One can usually only guess at things like quality and longevity, but hey, apart from time spent, it's free....

In the open source world, the Espruino project is a notable exception in terms of quality and support.

Thank you again for the quick response.