Jest - Cannot use import statement outside a module - using Rescript - reactjs

Question

I am trying to run unit tests in a React project generated using react-scripts, in which I added ReScript support.
When I run the tests, however, I encountered an error in the transpiled javascript code.
Details of the error:
/Users/massimilianodacunzo/Projects/Elixir/test-project/apps/phoenix_react_web/assets/node_modules/bs-platform/lib/es6/array.js:3
import * as Curry from "./curry.js";
^^^^^^
SyntaxError: Cannot use import statement outside a module
1 |
2 |
> 3 | import * as $$Array from "../../../node_modules/bs-platform/lib/es6/array.js";
| ^
4 | import * as React from "react";
5 |
6 | function TestComponent(Props) {
at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1350:14)
at Object.<anonymous> (src/components/users/TestComponent.bs.js:3:1)
The components I am trying to test:
App.res
%%raw(`
import logo from './logo.svg';
import './App.css';
`)
#react.component
let make = () => {
<div className="App">
<TestComponent elements={["1", "2", "3"]} />
</div>
}
TempComponent.res
#react.component
let make = (
~elements: array<string>
) => {
<ul>
{
React.array(
elements
|> Array.map(e =>
<li key={e}>{React.string(e)}</li>)
)
}
</ul>
}
The generated TestComponent.bs.js
import * as $$Array from "../../../node_modules/bs-platform/lib/es6/array.js";
import * as React from "react";
function TestComponent(Props) {
var elements = Props.elements;
return React.createElement("ul", undefined, $$Array.map((function (e) {
return React.createElement("li", {
key: e
}, e);
}), elements));
}
var make = TestComponent;
export {
make ,
}
/* react Not a pure module */
Is there any additional configuration I can add to the react-scripts test script?

Answer 1

Following the comment of glennsl, I followed the git issue, discovering that the configuration in my bsconfig.json file specified the package-specs module as es6. The test error didn't appear if I change the configuration to commonjs.
{
...
"package-specs": {
"module": "commonjs",
"in-source": true
}
...
}
Again, thanks to glennsl for pointing me in the right direction.