cgrand/cljs-js-repl

Upgradable self hosted clojurescript repl

cljs-js-repl's Issues

self-hosted CLJS situation

(quoting @cgrand off Slack):

Let’s summarize the self-hosted cljs situation:
• stock repls (lumo or planck) can’t be upgraded BUT using https://github.com/cgrand/cljs-js-repl one can have a server socket upgradable repl (maybe one day it could be the default socket repl for both — wishful thinking)
• we have a print.cljc (https://github.com/plexus/unrepl/blob/lumo_support/src/unrepl/print.cljc)
• what is missing is a repl.cljs (given the IO differences I’m not sure a repl.cljc is worth it)
• and the blob gen (which is not high priority since stock socket repls are not upgradeable yet)
That’s all

async `eval`

eval in self-hosted cljs has an async api (a callback is called with the result or error from the evaluation). Right now it's a provision (in case some IO for example has to be made during eval).

The problem is that cljs-js-repl makes intensive use of dynamic variables. They are set when eval is called, they can ve set again when the callback is called but not in between (again it's not a problem currently because eval impl is sync in Lumo and Planck, so there's no in-between.