No, it's espresso, not js2. But don't worry, that was the only sane Javascript mode; js2 is like its own program, completely independent of Emacs. Cool, but useless for real work.
espresso/js actually works like Emacs, and it doesn't try to treat Javascript as a dialect of C anymore.
espresso/js actually works like Emacs, and it doesn't try to treat Javascript as a dialect of C anymore.