Examine source code of PR Tracker

{
  "manifest_version": 2,
  "name": "PR Tracker",
  "description": "Track and manage your GitHub pull requests",
  "version": "1.0.18",
  "icons": {
    "16": "/icons/icon-16.png",
    "32": "/icons/icon-32.png",
    "48": "/icons/icon-48.png",
    "128": "/icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "notifications",
    "alarms",
    "https://api.github.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{dabd690e-283a-4c0a-98de-3fc963365d13}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "PR Tracker",
    "default_popup": "popup.html"
  }
}