Not just half of it, the central part of it. Javascript did not grow into something huge, it started that way. A prototype based wannabe Java that accidentally (?) shipped with a full scheme included alongside. The latter of which remained mostly dormant until "the good parts" came along and put them into the (deserved) spotlight, relegating the prototype stuff from idiomatic to niche, for when you are doing something particularly clever. It's a unique mess that has lead to something no purer language could dream of.
It would have worked out fine if we managed to lose the prototypes without ramming classes into the language and baiting all the Java dickheads over to the web ecosystem.
Javascript breathed it's last breath the moment someone saw NestJS and said "wow that's a good idea".
