Add react-refresh/only-export-components as a warning

Only as a warning so we can iteratively fix it and CI won't enforce it.

Author: lukaw3d

.changelog/2296.internal.md

@@ -0,0 +1 @@
+Detect hot-reload issues with eslint

.eslintrc.js

@@ -9,6 +9,8 @@ const config = {
     'react-app', // https://github.com/facebook/create-react-app/blob/main/packages/eslint-config-react-app/index.js
     'plugin:prettier/recommended', // See .prettierrc
   ],
+  plugins: ['react-refresh'],
+
   parser: '@typescript-eslint/parser',
 
   settings: {},
@@ -68,6 +70,8 @@ const config = {
     'react/display-name': 'off', // TODO: Maybe enable
     'react/self-closing-comp': ['error', { component: true, html: true }],
 
+    'react-refresh/only-export-components': ['warn', { allowConstantExport: true /* vite */ }],
+
     '@typescript-eslint/no-empty-function': 'off', // Allow empty reducers for saga
     '@typescript-eslint/no-non-null-assertion': 'off',
     '@typescript-eslint/no-non-null-asserted-optional-chain': 'off',

package.json

@@ -98,6 +98,7 @@
     "eslint-plugin-prettier": "5.2.6",
     "eslint-plugin-react": "7.37.4",
     "eslint-plugin-react-hooks": "4.6.2",
+    "eslint-plugin-react-refresh": "^0.4.24",
     "events": "^3.1.0",
     "jsdom": "^26.1.0",
     "markdownlint-cli": "0.44.0",

yarn.lock

@@ -4376,6 +4376,11 @@ eslint-plugin-react-hooks@^4.3.0:
   resolved "https://registry.yarnpkg.com/eslint-plugin-react-hooks/-/eslint-plugin-react-hooks-4.6.0.tgz#4c3e697ad95b77e93f8646aaa1630c1ba607edd3"
   integrity sha512-oFc7Itz9Qxh2x4gNHStv3BqJq54ExXmfC+a1NjAta66IAN87Wu0R/QArgIS9qKzX3dXKPI9H5crl9QchNMY9+g==
 
+eslint-plugin-react-refresh@^0.4.24:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-react-refresh/-/eslint-plugin-react-refresh-0.4.24.tgz#6914e8757eb7d7ccc3efb9dbcc8a51feda71d89e"
+  integrity sha512-nLHIW7TEq3aLrEYWpVaJ1dRgFR+wLDPN8e8FpYAql/bMV2oBEfC37K0gLEGgv9fy66juNShSMV8OkTqzltcG/w==
+
 eslint-plugin-react@7.37.4, eslint-plugin-react@^7.27.1:
   version "7.37.4"
   resolved "https://registry.yarnpkg.com/eslint-plugin-react/-/eslint-plugin-react-7.37.4.tgz#1b6c80b6175b6ae4b26055ae4d55d04c414c7181"