[capableweb]

> I see this is a WIP

Great, then we know at least two people know how to read :)

From the README: "RacketScript is an ___experimental____ lightweight Racket to JavaScript"

> https://try.gambitscheme.org/

For some folks who'd like me to trust their web knowledge, having an expired certificate certainly doesn't give me any more trust than I already had.

More on topic: I wonder how the REPL story is with Racketscript? Nothing seems to be mentioned in the README nor in the repository which would make this project a non-starter for the people who got used to ClojureScript and similar efforts.

[diskzero]

That is a bummer about the expired certificate. You can access the site using http instead of https if you are comfortable doing so. I have never seen this live REPL before and have just used their Github repo to get the latest: https://github.com/gambit/gambit

I think it is great someone is trying to get Racket compiling to Javascript again. I also agree with you about the REPL; while it is interesting to compile Racket to JS, having a REPL, a live environment and all the features of something like ClojureScript has much more utility.

[feeley]

Sorry about the certificate... I hadn't noticed it had expired. That is fixed now and you can visit https://try.gambitscheme.org/ to try it out (don't type anything in the REPL and you will get an automatic demo).

The last part of the demo shows how to use threads in the browser and also the JavaScript FFI. The FFI based on an infix syntax is explained in greater detail in this ELS'21 paper: http://www.iro.umontreal.ca/~feeley/papers/BelangerFeeleyELS... . The paper contains several examples. Here's a simple one you can type at the REPL:

(define message "<h1 id=\"title\">hello!</h1>")

\document.body.insertAdjacentHTML("afterbegin", `message)

\document.getElementById("title").innerText=`(object->string (expt 2 100))

Basically a backslash switches to JavaScript (with infix syntax) and a backquote switches back to Scheme (with prefix syntax).

The whole Gambit system fits in a 640KB gzipped JavaScript file, so it is reasonably fast to load.

If you are interested in a really tiny Scheme implementation in JavaScript that supports tail-calls and call/cc and an incremental Scheme compiler and a REPL and most of the R4RS procedures, you might want to try out the Ribbit Scheme implementation which is just under 6 KB of (non-gzipped) JavaScript: https://udem-dlteam.github.io/ribbit/repl-max.html . That implementation is described in a paper at the VMIL'21 workshop (presentation on October 19).

[nextaccountic]

Tip, you should probably setup auto-renewal with Certbot.