Examine source code of LINE(Unofficial port)

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "LINE",
  "description": "__MSG_appDescription__",
  "manifest_version": 3,
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "LINE",
    "default_icon": {
      "32": "line_logo_48x48_on.png",
      "48": "line_logo_48x48_on.png",
      "64": "line_logo_128x128_on.png",
      "96": "line_logo_128x128_on.png",
      "128": "line_logo_128x128_on.png"
    }
  },
  "icons": {
    "32": "line_logo_48x48_on.png",
    "48": "line_logo_48x48_on.png",
    "64": "line_logo_128x128_on.png",
    "96": "line_logo_128x128_on.png",
    "128": "line_logo_128x128_on.png"
  },
  "permissions": [
    "downloads",
    "storage",
    "notifications",
    "system.display",
    "cookies"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "LINEPorted@FoxRefire"
    }
  },
  "version": "3.7.0"
}