[elaus]

The technique as it isn't new of course, but I doubt this specific implementation (checking for module-supporting JS) is standard practice for a decade.

[greggturkington]

This doesn't check for "module-supporting JS"

> [not] for a decade

Agreed, probably longer. How old is Modernizr?

[weird-eye-issue]

Well you're wrong because it does check that it supports modules. Go look at it more closely.