Examine source code of Revert GitHub Feed

{
  "manifest_version": 3,
  "name": "Revert GitHub Feed",
  "version": "0.1.2",
  "description": "Replaces the GitHub feed with the classic /dashboard-feed",
  "host_permissions": [
    "https://github.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "old-github-feed@fwcd.dev"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/",
        "https://github.com/dashboard"
      ],
      "js": [
        "old-github-feed/old-feed.user.js"
      ]
    }
  ]
}