Parcel output empty js files

[MoonLGH]

🐛 bug report

Simmilar to #7646
parcel build src/*.html returns empty javascript with a comment point to a source file, example is on https://github.com/RPLSaci/MyPadi
the main branch has a not empty login.js on the assets/js

but look at the gh-pages branch, the login.js in empty but not the index.js, index.js file is not empty

🎛 Configuration (.babelrc, package.json, cli command)

{
  "name": "tcunim",
  "license": "MIT",
  "scripts": {
    "dev": "parcel src/*.html",
    "build": "parcel build src/*.html",
    "buildNotRoot": "parcel build --public-url '/MyPadi' src/*.html"
  },
  "dependencies": {
    "autoprefixer": "^10.4.7",
    "daisyui": "^2.15.1",
    "flowbite": "^1.5.1",
    "parcel": "^2.6.0",
    "postcss": "^8.4.14",
    "postcss-purgecss": "^2.0.3",
    "tailwindcss": "^3.0.24"
  }
}

🤔 Expected Behavior

Export a non empty js file

😯 Current Behavior

Export an empty js file

💁 Possible Solution

• i dont know

🔦 Context

This bug really affects my ci/cd since my project automaticly puts the gh pages by the github workflows

💻 Code Sample

🌍 Your Environment

Software	Version(s)
Parcel	2.9.3^(on local)
Node	18.16.1^
npm/Yarn	9.5.1
Operating System	Tried on Debian, ubuntu, windows 10

[jondlm]

Looks like your login.js file is probably getting dead code eliminated since it's not actually doing anything. Try adding a console.log() to the file to have it stick around.

[MoonLGH]

ITS NOW ONLY EXPORTING THE CONSOL LOG AHAHAHAHA

[jondlm]

Try adding "sideEffects": true in your package.json. I think your project is setup a bid oddly. Usually you'd have one entrypoint JS file per page that did something instead of just defining a bunch of unused functions. Either way I think that flag should help.

[jondlm]

Okay, dug a little more into this one cause it intersected with some of my own work. Looks like Parcel shouldn't really be dead code eliminating your code since your <script> tag doesn't have the type="module" type therefore it's a classic script. So that's unexpected.

I tried playing around with adding an .swcrc file with:

{
  "isModule": false,
  "jsc": {
    "minify": {
      "compress": {
        "unused": false,
        "mange": false
      }
    }
  }
}

But that didn't work.

At the moment the only workaround I found was adding --no-optimize to the parcel build command which isn't ideal but it works.

[MoonLGH]

definitely --no-optimze works, i guess ill use it for now