Clojurians Log v2

…and I’m no JS expert by any means. tried using esbuild, but it won’t help: with format=esm, I still have import statements; with format=cjs, it gives a warning about import.meta.url and the resulting file fails to work with goja, too.

squint and cherry don't use import.meta.url, perhaps you are using this in your own program?

import and import.meta.url are ES6 constructs. it seems goja doesn't support ES6

> ECMAScript 5.1

yeah I saw that but they also claim to support some ES6 so I thought I’d give it a shot 😄

npx esbuild cherry.mjs --bundle --platform=node --outfile=foo.mjs
▲ [WARNING] "import.meta" is not available with the "cjs" output format and will be empty [empty-import-meta]

    cherry.mjs:4:77:
      4 │ cherry_core.prn.call(null, fs.existsSync.call(null, fileURLToPath.call(null, import.meta.url)));
        ╵                                                                              ~~~~~~~~~~~

  You need to set the output format to "esm" for "import.meta" to work correctly.

I don’t have any added code yet, cherry.mjs is the product of cherry run’ing

(ns example
  (:require ["fs" :as fs]
            ["url" :refer [fileURLToPath]]))

(prn (fs/existsSync (fileURLToPath js/import.meta.url)))

(defn foo [{:keys [a b c]}]
  (+ a b c))

(js/console.log (foo {:a 1 :b 2 :c 3}))

oh wait. there it is 😳

running the script without the import through the esbuild I get another error

panic: ReferenceError: module is not defined at cherry.mjs:24:1(37)

goroutine 1 [running]:
main.main()
        /Users/stephan/Sources/srenatus/cherry-go/main.go:14 +0x105
exit status 2

module.exports = __toCommonJS(cherry_exports);

hmm esbuild with --format=iife gives me console is not defined at ...

there’s https://github.com/dop251/goja_nodejs for that

(sorry for thinking out loud)

huh I guess this kinda-sorta worked

srenatus/cherry-go % npx cherry run cherry.cljs
[cherry] Running cherry.cljs
6
srenatus/cherry-go % npx esbuild cherry.mjs --bundle --platform=node --outfile=foo.mjs --format=iife

  foo.mjs  473.9kb

⚡ Done in 50ms
srenatus/cherry-go % go run main.go
2025/01/08 10:55:21 6
2025/01/08 10:55:21 val: undefined goja.valueUndefined
srenatus/cherry-go %

@stephan.renatus what was your experience with Goja so far, did you get things working to any extent? Found it's available in https://pocketbase.io/docs/js-overview/ and got curious about Cljs support.

esbuild takes a target option, try --target=es5

I haven't done anything beyond the quarter-hour hack above, sorry. no insights.