Examine source code of FencingTV Score Hider

{
  "manifest_version": 3,
  "name": "FencingTV Score Hider",
  "version": "1.3",
  "description": "Hides match scores and adds keyboard shortcuts on FencingTV.",
  "browser_specific_settings": {
    "gecko": {
      "id": "fencing-score-hider@kiranp.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://fencingtv.com/*",
        "*://*.fencingtv.com/*"
      ],
      "css": [
        "hide-scores.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}