Examine source code of Phone Camera as WebCam + Phone Mic

{
  "manifest_version": 3,
  "name": "Phone Camera as WebCam + Phone Mic",
  "version": "3.0.0",
  "description": "Turn your phone into a wireless webcam for Firefox (Meet, Zoom, more). Pair with a QR code or saved PIN — no cables needed.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://cam.suryacreates.com/*",
    "https://0.peerjs.com/*",
    "wss://0.peerjs.com/*"
  ],
  "background": {
    "scripts": [
      "peerjs.min.js",
      "offscreen.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Phone Camera as WebCam + Phone Mic",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-bridge.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject-main.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "phone-camera-webcam@suryacreates.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}