Examine source code of Cloudflare logins counter

{
  "name": "Cloudflare logins counter",
  "description": "Count your logins into cloudflare.com",
  "version": "1.1",
  "manifest_version": 2,
  "permissions": [
    "webRequest",
    "https://dash.cloudflare.com/api/v4/login",
    "storage"
  ],
  "background": {
    "scripts": [
      "js/browser-polyfill.js",
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon48.png",
    "default_title": "Cloudflare Counter",
    "default_popup": "popup/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cloudflare-login-counter@chickenmatty.me"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  }
}