I’m currently trying to upgrade the jQuery embedded in an older project from 1.10.0 to 1.12.4 and found multiple horrors, called the new external/ subdirectory.
jQuery 1.12.4 ships a minified-only npo v0.7.8-a with no source available, which makes jQuery 1.12.4 not Open Source, and not suitable for Debian to boot.
The npo repository does not have a git tag corresponding to v0.7.8-a (see getify/native-promise-only#57 for the bug for that) and does not contain the minified compilation output, so I cannot find out the correct source code myself.
This makes jQuery 1.12.4 non-redistributable under OSS rules.