Examine source code of Dictionary Search

{
  "manifest_version": 2,
  "name": "Dictionary Search",
  "version": "1.0",
  "description": "Adds context menu items to search selected text in dictionaries and translate with DeepL, Reverso Context, and Google Translate.",
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{222ab40a-01e7-436e-8f38-80be4eeaf45f}"
    }
  }
}