Examine source code of GitSyncMarks

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "short_name": "GitSyncMarks",
  "version": "3.0.2",
  "description": "__MSG_extDescriptionFirefox__",
  "default_locale": "en",
  "homepage_url": "https://gitsyncmarks.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "gitsyncmarks@d0dg3r",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "bookmarksInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "bookmarks",
    "storage",
    "alarms",
    "notifications",
    "contextMenus",
    "activeTab",
    "scripting",
    "downloads"
  ],
  "host_permissions": [
    "https://api.github.com/*",
    "https://gitlab.com/*",
    "https://codeberg.org/*"
  ],
  "optional_host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'none'"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "quick-sync": {
      "suggested_key": {
        "default": "Ctrl+Shift+Period",
        "mac": "Command+Shift+Period"
      },
      "description": "__MSG_commands_quickSync__"
    },
    "open-options": {
      "suggested_key": {
        "default": "Ctrl+Shift+Comma",
        "mac": "Command+Shift+Comma"
      },
      "description": "__MSG_commands_openOptions__"
    }
  }
}