Examine source code of Roblox DevTools

{
  "manifest_version": 3,
  "name": "Roblox DevTools",
  "version": "1.0.1",
  "description": "Useful tools for Roblox developers",
  "content_scripts": [
    {
      "matches": [
        "*://create.roblox.com/*"
      ],
      "js": [
        "scripts/content/exact-price.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "roblox-dev-tools@ikingninja.github.io"
    }
  }
}