npm run dev giving error, npm run build works fine

[Rushijoshi3798]

Reproduction

Hi Team,

I am getting below error every time when I run the "npm run dev" command.

`
Unexpected Server Error

ReferenceError: y is not defined
`

After getting this error I am not able to proceed with our application (Even Print 'Hello world' is not working on the _index.jsx file ).

But npm run build & then npm run start works just fine as if nothing had happened.

Details:

Node Version - v20.11.1
Npm Version - 10.2.4

Package.Json -

{
"name": "easemyactivity",
"private": true,
"sideEffects": false,
"type": "module",
"scripts": {
"build": "remix vite:build",
"dev": "remix vite:dev",
"lint": "eslint --ignore-path .gitignore --cache --cache-location ./node_modules/.cache/eslint .",
"start": "remix-serve ./build/server/index.js",
"typecheck": "tsc"
},
"dependencies": {
"@remix-run/node": "^2.9.1",
"@remix-run/react": "^2.9.1",
"@remix-run/serve": "^2.9.1",
"isbot": "^4.1.0",
"react": "^18.2.0",
"react-dom": "^18.2.0"
},
"devDependencies": {
"@remix-run/dev": "^2.9.1",
"@types/react": "^18.2.20",
"@types/react-dom": "^18.2.7",
"@typescript-eslint/eslint-plugin": "^6.7.4",
"@typescript-eslint/parser": "^6.7.4",
"autoprefixer": "^10.4.19",
"eslint": "^8.38.0",
"eslint-import-resolver-typescript": "^3.6.1",
"eslint-plugin-import": "^2.28.1",
"eslint-plugin-jsx-a11y": "^6.7.1",
"eslint-plugin-react": "^7.33.2",
"eslint-plugin-react-hooks": "^4.6.0",
"postcss": "^8.4.38",
"tailwindcss": "^3.4.3",
"typescript": "^5.1.6",
"vite": "^5.1.0",
"vite-tsconfig-paths": "^4.2.1"
},
"engines": {
"node": ">=18.0.0"
}
}

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (12) x64 AMD Ryzen 5 5500U with Radeon Graphics
    Memory: 591.44 MB / 5.86 GB
  Binaries:
    Node: 20.11.1 - C:\Program Files\nodejs\node.EXE
    npm: 10.2.4 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (124.0.2478.51)
    Internet Explorer: 11.0.22621.1
  npmPackages:
    @remix-run/dev: ^2.9.1 => 2.9.1
    @remix-run/node: ^2.9.1 => 2.9.1
    @remix-run/react: ^2.9.1 => 2.9.1
    @remix-run/serve: ^2.9.1 => 2.9.1
    vite: ^5.1.0 => 5.2.11

Used Package Manager

npm

Expected Behavior

npm run dev should run properly.

Actual Behavior

npm run dev is giving

Unexpected Server Error
ReferenceError: y is not defined

[brophdawg11]

There's not much information here that we can use to triage. Can you provide a minimal reproduction of the issue?