Examine source code of GitHub Repo Creation Date

{
  "manifest_version": 3,
  "name": "GitHub Repo Creation Date",
  "version": "1.1",
  "description": "Displays the creation date of GitHub repositories in the sidebar.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "github-creation-date@bobjoerules.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}