libcjs-dev 4.6.0-2ubuntu1 (s390x binary) in ubuntu hirsute

 Makes it possible for applications to use all of Cinnamon's platform
 libraries using the Javascript language. It's mainly based on the
 Mozilla javascript engine and the GObject introspection framework.
 .
 This package is the frozen version of gjs that the cinnamon desktop currently
 uses.
 .
 This package contains the development files applications need to
 build against.