Examine source code of Tab Reloader

{
  "manifest_version": 2,
  "name": "Tab Reloader",
  "version": "1.0",
  "description": "Reload the current tab at a specified interval",
  "homepage_url": "https://github.com/jrmgx/TabReloaderExtension",
  "permissions": [
    "tabs",
    "alarms",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Tab Reloader",
    "default_icon": "blue.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@tab-reloader",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}