Examine source code of Disable GitHub Shortcuts

{
  "manifest_version": 3,
  "name": "Disable GitHub Shortcuts",
  "version": "1",
  "browser_specific_settings": {
    "gecko": {
      "id": "@disable-github-shortcuts",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.github.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}