Examine source code of Lingva

{
  "name": "Lingva",
  "description": "__MSG_manifest_description__",
  "version": "1.10.3",
  "manifest_version": 2,
  "author": "Indogermane",
  "default_locale": "en",
  "options_ui": {
    "page": "src/options/options.html"
  },
  "icons": {
    "128": "_images/icon.svg"
  },
  "browser_action": {
    "default_icon": "_images/icon.svg",
    "default_popup": "src/popup/popup.html"
  },
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "src/content/content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "commands": {
    "translate-selection": {
      "suggested_key": {
        "default": "Alt+T",
        "linux": "Alt+T"
      },
      "description": "__MSG_manifest_command_translateSelection__"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "menus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "Lingva@Indogermane",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}