Examine source code of SuperrBook - Reading List

{
  "manifest_version": 3,
  "name": "SuperrBook - Reading List",
  "version": "1.0.3",
  "description": "Save articles to Superr and play as audio",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "identity"
  ],
  "host_permissions": [
    "<all_urls>",
    "http://localhost/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "src/popup/index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "defuddle.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@superr.ai",
      "strict_min_version": "109.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "defuddle.js",
        "extract.js"
      ],
      "run_at": "document_idle"
    }
  ]
}