How to access the general headers of http requests in the Network tab of Inspect element in javascript

[Arhum Savera]

I am working on an extension to filter out the http requests made by an extension. The only way i have found to identify when a request is made by an extension is in the Request URL of the general headers since it has a prefix of chrome-extension. How do I access these headers in JS? Is there any other way to identify whether an HTTP request was made by the browser(user) or an extension?