Examine source code of Caido Fragment

{
  "manifest_version": 2,
  "name": "Caido Fragment",
  "version": "1.2",
  "description": "Sends client-side frament paths to (original domain + .local) captured by Caido or Burp",
  "permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{74cb8bf8-b453-4912-97d4-196a6bdfef06}"
    }
  }
}