Examine source code of WebWormhole

{
  "manifest_version": 3,
  "name": "WebWormhole",
  "version": "0.8",
  "description": "WebWormhole lets you send files from one place to another.",
  "icons": {
    "16": "icon.svg",
    "48": "icon.svg",
    "96": "icon.svg",
    "128": "icon.svg",
    "192": "icon.svg",
    "512": "icon.svg"
  },
  "action": {
    "default_title": "WebWormhole",
    "default_icon": "icon.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self' 'wasm-unsafe-eval'; img-src 'self' blob:; connect-src wss://webwormhole.io"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{30b9cc0e-c7e0-4de7-81a1-71742f1d652d}"
    }
  }
}