The capability is there since 2.3 at least, but Matz doesn't want it by default, and prefer to leave it to libraries. If you use bootsnap, you use ".rbc" files

The capability is there since 2.3 at least, but Matz doesn't want it by default, and prefer to leave it to libraries. If you use bootsnap, you use ".rbc" files already. Source: https://bugs.ruby-lang.org/issues/16847#note-14 https://bugs.ruby-lang.org/issues/16847#note-14