Examine source code of next-network

{
  "manifest_version": 2,
  "name": "next-network",
  "description": "Real-time Network Monitoring for Next.js",
  "version": "1.2.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "devtools_page": "devtools.html",
  "content_scripts": [
    {
      "matches": [
        "*://127.0.0.1/*",
        "*://localhost/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9d6a333-eac0-490b-8c02-eb0069d27b28}"
    }
  }
}