Option module loading error

[kswope]

Something is weird about the core Option module, when run with just node

but seems to work just fine with create-react-app (webpack I think)

works

Array.at([1, 2, 3], 0)->Console.log

doesn't work

Option.equal(Some(1), Some(1), (v1, v2) => {v1 == v2})->Console.log

[nodemon] starting `node src/Index.bs.js`
(node:21031) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
/Users/kevin/Dev/ReScript/rescript-notes/node_modules/@rescript/core/src/Core__Option.bs.js:3
import * as Curry from "rescript/lib/es6/curry.js";
^^^^^^

SyntaxError: Cannot use import statement outside a module
    at internalCompileFunction (node:internal/vm:73:18)
    at wrapSafe (node:internal/modules/cjs/loader:1195:20)
    at Module._compile (node:internal/modules/cjs/loader:1239:27)
    at Module._extensions..js (node:internal/modules/cjs/loader:1329:10)
    at Module.load (node:internal/modules/cjs/loader:1133:32)
    at Module._load (node:internal/modules/cjs/loader:972:12)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:168:29)
    at ModuleJob.run (node:internal/modules/esm/module_job:193:25)

If I sneak a "type":"module" into package.js inside @rescript/core package it starts working

[DZakh]

Try using .bs.mjs suffix. I don't recommend setting type: "module for ReScript packages, since it'll lead to a whole lot of other problems. There's somewhere a post on the forum about it.

[kswope]

Try using .bs.mjs suffix. I don't recommend setting type: "module for ReScript packages, since it'll lead to a whole lot of other problems. There's somewhere a post on the forum about it.

Its awkward that this is the default for

npx rescript init

  "package-specs": {
    "module": "es6",
    "in-source": true
  },
  "suffix": ".bs.js"

making running with node fail as your first beginner experience

But I still cant figure out what it was only the Option module and not Array module that gave me this error. Something is different between them.

[tsnobip]

create-rescript-app now defaults to .res.mjs so this should not happen anymore.