Examine source code of uOTP

{
  "author": "Corentin Risselin",
  "browser_action": {
    "default_icon": "icons/uotp.svg",
    "default_title": "uOTP",
    "default_popup": "/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": "default-src 'self'",
  "description": "A simple OTP manager that doesn't require your data.",
  "homepage_url": "https://gitlab.com/corentin-pro/uotp",
  "icons": {
    "96": "icons/uotp.svg"
  },
  "manifest_version": 2,
  "name": "uOTP",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "version": "1.5.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4ba6f3d9-7b21-4563-a7d5-984e8592fd3c}"
    }
  }
}