elsa

So Elsas own comparison[1] says that the binary size difference is 20MB Elsa (QJS) vs 44MB Deno (V8). Looking at QuickJS benchmark[2] V8 is 28M vs 1M QJS, so Elsa adds 19M on top of the engine vs 16M for Deno. Doesn't feel that lightweight anymore [1] https://github.com/elsaland/elsa/blob/master/COMPARISON.md [2] https://bellard.org/quickjs/bench.html

Each of the benchmarks seem to take a single-digit number of milliseconds in Elsa/QuickJS. My guess is that these benchmarks were chosen because the startup time for QuickJS is probably less than the startup time for V8, but I struggle to imagine that V8 is slower once the code has warmed up. Any meaningful benchmark with JIT runtimes should take several seconds, at a minimum, in my opinion. 8 milliseconds is not enough. From what I can tell, the benchmark is including the startup time, and it isn't keeping the interpreter warm -- it starts a fresh instance for each iteration of the benchmark. This is one of the benchmarks: https://github.com/elsaland/elsa/blob/master/testing/bench_s... Literally a single line of JavaScript.

There are some benchmarks against Deno here (as JSON files): https://github.com/elsaland/elsa/tree/master/benchmarks