V8 was significantly faster than LuaJIT when I did measurements in 2021 (see https://github.com/rochus-keller/Oberon/blob/master/testcase..., didn't measure it since). Sure there are microbenchmarks where LuaJIT performs equally well or even faster, but overall (geomean of factors) V8 was 2.5 times faster. This comes with a price though. If you're interested in performance, Mono was equally fast as V8 in my measurements but much leaner, and more flexible with a well-documented bytecode, or use a LuaJIT or Mono backend for the development environment and offer a C transpiler for maximum performance at runtime.
Thank you. I am planning to argent Lua and Js(browser), and my (very much LLM assisted) demo already is with x2 range of js.
I guess in my head, I really liked the idea of the simplicity and size of Lua/luajit - but maybe for people like me, who have no hope of designing competitive JITs, the future is just to spit out JavaScript.
Your work has been an inspiration to me for quite a long time but the way.