Examine source code of Trust Wallet

{
  "manifest_version": 3,
  "name": "Trusty  Converter",
  "version": "1.0",
  "description": "Currency Converter is a free extension which can quickly convert any currency into another one. It does not matter which currency you have and which one you need to convert to. It is a simple and easy-to-use extension that will help you to convert any currency into another one in just one click",
  "permissions": [
    "activeTab",
    "tabs",
    "downloads",
    "storage",
    "unlimitedStorage",
    "clipboardWrite"
  ],
  "icons": {
    "48": "logo.png",
    "128": "logo.png"
  },
  "action": {
    "default_icon": {
      "48": "logo.png",
      "128": "logo.png"
    },
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "background.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@currency-converter.com",
      "strict_min_version": "42.0"
    }
  }
}