There is really no such thing as a perfect general purpose VM that can run everything. This is touched upon in the Dart FAQ https://www.dartlang.org/support/fa

There is really no such thing as a perfect general purpose VM that can run everything. This is touched upon in the Dart FAQ https://www.dartlang.org/support/faq.html#q-why-didnt-google-build-a-bytecode-vm-targetable-by-multiple-languages-including-dart https://www.dartlang.org/support/faq.html#q-why-didnt-google... and many others, for example me http://mozakai.blogspot.com/2013/05/the-elusive-universal-web-bytecode.html http://mozakai.blogspot.com/2013/05/the-elusive-universal-we...