Deno performance compared to node.js

Question

Deno uses v8 to execute javascript but considering the fact that it directly runs typescript, I'm wondering if there is a performance penalty because of it or not.

It seems it compiles the code only for the first time. So is it possible to compile as a deployment step and avoid the startup overhead related to compilation?

Is there any other aspect in performance comparison between node.js and Deno?

Answer 1

Deno keeps track of some key performance metrics here: https://deno.land/benchmarks

As far as pre-compilation, it's on the roadmap and tracked in this issue: https://github.com/denoland/deno/issues/986

Answer 2

(an answer to the 2nd paragraph)

Deno stores the compiled assets in DENO_DIR. You can check it with the command "deno info". If you deploy the entire DENO_DIR as well as your source code, you can avoid the TypeScript compilation at the startup time.

You can also change the location of DENO_DIR by setting the DENO_DIR environmental variable.

DENO_DIR=/path/to/your_deno_dir deno run entrypoint.ts