Examine source code of IC Inspector

{
  "manifest_version": 3,
  "name": "IC Inspector",
  "version": "1.1.1",
  "description": "Decode network responses from the Internet Computer blockchain.",
  "devtools_page": "index.html",
  "permissions": [],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/icons.svg",
        "entries/devtools/index.html",
        "entries/sandbox/index.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "assets/16.png",
    "48": "assets/48.png",
    "128": "assets/128.png"
  },
  "sandbox": {
    "pages": [
      "entries/sandbox/index.html"
    ]
  },
  "content_security_policy": {
    "sandbox": "sandbox allow-scripts; script-src-elem 'unsafe-eval' 'unsafe-inline' 'self' https://* http://*; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "icinspector@buildnode.io"
    }
  }
}