Examine source code of MeowVPN

{
  "manifest_version": 3,
  "name": "MeowVPN",
  "short_name": "MeowVPN",
  "version": "2.0.0",
  "description": "Browse privately. Route your Firefox traffic through MeowVPN's secure proxy network with one click — free locations included.",
  "author": "MeowVPN",
  "homepage_url": "https://captainhadook.skin",
  "browser_specific_settings": {
    "gecko": {
      "id": "meowvpn@meowvpn.app",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "proxy",
    "storage",
    "notifications"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "protocols/index.js",
      "protocols/socks5.js",
      "protocols/https.js",
      "lib/config.js",
      "lib/api.js",
      "background.js"
    ],
    "persistent": false
  },
  "action": {
    "default_title": "MeowVPN",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-off-48.png",
      "96": "icons/icon-off-96.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  }
}