Examine source code of 3D Cursor

{
  "manifest_version": 2,
  "name": "3D Cursor",
  "version": "1.6.0",
  "description": "Display a 3D cursor that follows your mouse with customizable animations and materials",
  "browser_specific_settings": {
    "gecko": {
      "id": "3dcursor@3dcursor.fun",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "unlimitedStorage",
    "https://3dcursor.fun/*",
    "https://www.3dcursor.fun/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "three.min.js",
        "GLTFLoader.js",
        "content.js"
      ],
      "all_frames": false,
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "content/cursors/*.glb",
    "content/textures/*",
    "content/textures/pointers.json",
    "environmentMap.jpg",
    "*.png",
    "*.jpg"
  ]
}