Examine source code of Cantonese Input

{
  "name": "Cantonese Input",
  "description": "Facility for Chinese characters input using Cantonese phonetic of Sidney Lau romanisation instead of other Pinyin pronunciations. Featuring offline/online functioning mode.",
  "version": "1.0",
  "permissions": [
    "alarms",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "optional_permissions": [
    "scripting"
  ],
  "background": {
    "page": "background-page.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "extra/jquery-3.6.0.min.js",
        "extra/content_common.js",
        "content.js"
      ]
    },
    {
      "matches": [
        "*://*.cantoneseinput.com/*"
      ],
      "js": [
        "extra/jquery-3.6.0.min.js?0",
        "extra/content_common.js?0",
        "content_cantoneseinput.js?0"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [],
      "extension_ids": [
        "*"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "action": {
    "default_icon": "default-64.png",
    "default_title": "Cantonese Input"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; upgrade-insecure-requests;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@input",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    },
    "gecko_android": {}
  },
  "manifest_version": 3
}