Bun Repl

[johnpgr]

Describe the language you want support for (compiler, specificities)
I'd like an interpreter for Typescript/Javascript that uses Bun bun repl [and that work with detected filetypes javascript, typescript]...

Support Level to achieve
Any support is enough for me....

Additional context
Add any other context or screenshots about the feature request here.

[michaelb]

I guess that you also want REPL capabilities within sniprun, as," it's possible to run a snippet declaring one variable, and then another one using it" ?

If so, I can implement that, but I'll need some time and luck

If you don't require REPL capabilities, it should be possible to get it running by yourself with the generic interpreter

[johnpgr]

Well, ofc REPL capability would be nice, but in the mean time, I tried to use the generic interpreter, but the Typescript_original runs instead.

my config:

config = function()
            require("sniprun").setup({
                interpreter_options = {
                    Generic = {
                        Bun = {
                            supported_filetypes = { "typescript" },
                            extension = ".ts",
                            interpreter = "bun repl",
                            compiler = "",
                        }
                    }
                },
                selected_interpreters = { 'Generic' },
            })
        end,

[michaelb]

There is indeed an error in my current code driving behavior of sniprun when the Generic interpreter is used on a language that already has support. Something not too complex, but since you'll wait anyway I can make a proper TS/JS Bun intepreter... and maybe REPL-capable

[michaelb]

So..

There is a fix for for the Generic interpreter issue, which should allow you to run the Generic interpreter with this config:

        selected_interpreters = { 'Generic' },
        interpreter_options = {
            Generic = {
                error_truncate="long",
                Bun = {
                    supported_filetypes = { "typescript", "javascript" },
                    extension = ".ts",
                    interpreter = "bun run",
                    compiler = "",
                }
            }
        },

I also made a "full-fledged" bun-based js/ts interpreter, but it doesn't bring much more than the generic config, except for .... a repl mode!

However, bun repl itself is ..... very very janky about its stdin/stdout, most notably, the order is sometimes borked.
(simplified example with an intentionnal error 'le b=1':

echo "let a=1;console.log('start');a;le b=1;console.log('end')" | bun repl
.... blablah
> console.log('start')
> le b=1
× Expected ';', '}' or <eof>
   ╭─[$bun$repl.ts:1:1]
 1 │ le b=1
   · ─┬ ─
   ·  ╰── This is the expression part of an expression statement
   ╰────
> a
> console.log('end')
start
end
1

So I expect low reliability on complex prompts

You can try these changes on the dev branch (you'll need rust and sh ./install.sh 1 to compile locally sniprun), or wait for the 1.3.9 release that will probably happen next week