Examine source code of GetLifeUndo

{
  "manifest_version": 2,
  "name": "GetLifeUndo",
  "version": "0.4.3.5",
  "version_name": "0.4.3.5-alpha35",
  "description": "Ctrl+Z для онлайн‑жизни. Автосохранение форм и недавно закрытые вкладки.",
  "permissions": [
    "storage",
    "tabs",
    "sessions",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "common/logger.js",
      "background/index.js"
    ]
  },
  "browser_action": {
    "default_title": "GetLifeUndo",
    "default_popup": "popup/index.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "32": "assets/icon32.png",
      "48": "assets/icon48.png",
      "128": "assets/icon128.png"
    },
    "default_area": "navbar",
    "theme_icons": [
      {
        "light": "assets/icon16.png",
        "dark": "assets/icon16.png",
        "size": 16
      },
      {
        "light": "assets/icon32.png",
        "dark": "assets/icon32.png",
        "size": 32
      }
    ]
  },
  "options_ui": {
    "page": "options/index.html",
    "browser_style": true,
    "open_in_tab": true
  },
  "icons": {
    "16": "assets/icon16.png",
    "32": "assets/icon32.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "common/i18n.js",
        "common/storage.js",
        "content/forms.js",
        "content/capture.js"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "lifeundo@example.com",
      "strict_min_version": "102.0"
    }
  }
}