Examine source code of ArchiveWarden

{
  "manifest_version": 2,
  "name": "ArchiveWarden",
  "version": "1.2.1",
  "description": "Automatically archives important pages.",
  "browser_specific_settings": {
    "gecko": {
      "id": "emmarim.gan45@outlook.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "shelf/curator.js",
      "crate/storer.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "stamp/grader.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_title": "ArchiveWarden",
    "default_popup": "fold/vault.html"
  },
  "icons": {
    "48": "fold/chest.svg"
  }
}