Examine source code of Time Tracker

{
  "description": "A chromium extension to keep track of time.",
  "version": "2.0.0",
  "manifest_version": 3,
  "author": "mgautam07",
  "name": "Web Time Tracker",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "action": {
    "default_title": "Time Tracker",
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icon-128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content.styles.css",
        "icon-128.png",
        "icon-34.png"
      ],
      "matches": []
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "idle"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "mgautam07@github.com",
      "strict_min_version": "101.0"
    }
  }
}