Examine source code of rym-hide-ratings

{
  "manifest_version": 3,
  "name": "rym-hide-ratings",
  "version": "1.2.0",
  "description": "Hides rateyourmusic release/track ratings until user has rated the release.",
  "icons": {
    "32": "icons/rym-hide-ratings-icon.png",
    "64": "icons/rym-hide-ratings-icon.png",
    "96": "icons/rym-hide-ratings-icon.png",
    "128": "icons/rym-hide-ratings-icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rym-hide-ratings@benbest",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://rateyourmusic.com/*"
      ],
      "js": [
        "rym-hide-ratings.js"
      ],
      "run_at": "document_start"
    }
  ]
}