Examine source code of password generator

{
  "manifest_version": 3,
  "name": "Password Generator",
  "version": "1.1",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wheelofate@wheelofate-ffaaf.web.app.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  }
}