Examine source code of Chrome Spoofer

{
  "manifest_version": 3,
  "name": "Chrome Spoofer",
  "version": "1.1.0",
  "description": "Advanced Browser Spoofing Extension | Secured by Fire-Auth 2.0 | Developed by Divyanshu Gupta",
  "author": "Divyanshu Gupta",
  "homepage_url": "https://github.com/divyanshugupta0",
  "permissions": [
    "storage",
    "scripting",
    "notifications",
    "alarms",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Chrome Spoofer - Secured by Fire-Auth 2.0"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ua_rules",
        "enabled": true,
        "path": "rules_ua.json"
      }
    ]
  },
  "icons": {
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chrome-spoofer@firefly.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}