Examine source code of Tap to Translate

{
  "manifest_version": 2,
  "name": "Tap to Translate",
  "version": "3.0.1.17",
  "default_locale": "vi",
  "description": "__MSG_extDescription__",
  "browser_specific_settings": {
    "gecko": {
      "id": "taptotranslate@diengb",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "menus",
    "alarms",
    "notifications"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png"
  },
  "background": {
    "scripts": [
      "src/lib/util.js",
      "src/lib/cache.js",
      "src/lib/lemma.js",
      "src/lib/sr.js",
      "src/lib/history.js",
      "src/lib/settings.js",
      "src/lib/streak.js",
      "src/lib/i18n.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "js": [
        "src/lib/util.js",
        "src/lib/lemma.js",
        "src/lib/i18n.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "commands": {
    "translate-selection": {
      "suggested_key": {
        "default": "Alt+T"
      },
      "description": "__MSG_cmdTranslate__"
    },
    "toggle-hover": {
      "suggested_key": {
        "default": "Alt+H"
      },
      "description": "__MSG_cmdToggleHover__"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  }
}