feat: add support for non-dev jsx runtime

[jihchi]

Description

I stumble across an issue where the Fast Refresh feature doesn't work with a Vite plugin I'm maintaining. After examination, I identified the root cause: The generated code with .js extension uses react/jsx-runtime for JSX transformation instead of react/jsx-dev-runtime, because of this, the generated code is no longer eligible for applying Fest Refresh, which results in a full page reloaded.

Here is a JS file generated by the compiler, for example (click to expand)

Filename: Res.bs.js

// Generated by ReScript, PLEASE EDIT WITH CARE

import * as JsxRuntime from "react/jsx-runtime";

function Res(props) {
  return JsxRuntime.jsx("h3", {
    children: "ReScript Component",
    className: "text-blue-100",
  });
}

var make = Res;

export { make };
/* react/jsx-runtime Not a pure module */

In order to fix it, this PR adds an extra check for such case so that the Fast Refresh works as expected.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Ideally, include relevant tests that fail without this PR but pass with it.

[ArnaudBarre]

Is there any reason why ReScript is not generating code with jsxDev? This could have some benefits like adding information the for react devtools and making it work with https://github.com/ArnaudBarre/vite-plugin-react-click-to-component

[jihchi]

Hi @ArnaudBarre, I have no idea. I've done some searching but there's no insightful result. For what it's worth, it appears that it was implemented this way initially.

As far as I'm concerned, it is likely a challenge and substantial effort to make jsxDev works seamlessly in the compiler.

[ArnaudBarre]

Thanks for the great PR. I will merge this as there is also other cases where this can show up vitejs/vite-plugin-react-pages#132