Examine source code of EndPointer

{
  "manifest_version": 3,
  "name": "EndPointer",
  "version": "1.0.0",
  "description": "An endpoint parser and extractor with many flexible features",
  "icons": {
    "16": "icons/EndPointer.png",
    "32": "icons/EndPointer.png",
    "48": "icons/EndPointer.png",
    "128": "icons/EndPointer.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "PopUp/popup.html",
    "default_title": "Endpoint Extractor for Hackers",
    "default_icon": "icons/EndPointer.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js",
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "type": "module"
    }
  ],
  "devtools_page": "DevTool/DevTool.html",
  "web_accessible_resources": [
    {
      "resources": [
        "DevTool/background.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "endPointer@interloper-security-group.com",
      "strict_min_version": "58.0"
    }
  }
}