Since then there has been a team of some of the best programmers in the world maintaining and advancing the language.
JavaScript engines have seen a lot of effort from some of the best compiler and JIT experts in the industry, including former Self VM architects, yes.
The language itself? I honestly can't say that. Lua is a way better ECMAScript than ECMAScript itself, and the focus should have been on trimming it down to a smaller but easily extensible core, as opposed to the feature piling that's going on.
JavaScript engines have seen a lot of effort from some of the best compiler and JIT experts in the industry, including former Self VM architects, yes.
The language itself? I honestly can't say that. Lua is a way better ECMAScript than ECMAScript itself, and the focus should have been on trimming it down to a smaller but easily extensible core, as opposed to the feature piling that's going on.