How do I delete headers when using responseInterceptor?

[thealtofwar]

I would like to delete a header from the response of the proxy

onProxyRes: responseInterceptor(async (responseBuffer, proxyRes, req, res) => {
    const response = responseBuffer.toString('utf8'); 
    delete proxyRes.headers["Content-Security-Policy"];
    return response.replaceAll('//' + proxySite, '//' + hostName).replaceAll("//" + proxyCDN, "//" + hostCDN);
}

However the proxy still sends the CSP.

~$ curl --head localhost:3000
HTTP/1.1 200 OK
some headers ommitted ...
content-security-policy: default-src 'self'; image-src: 'self' https://thirdpartycdn.com

[chimurai]

It's document here:
https://github.com/chimurai/http-proxy-middleware/blob/master/recipes/response-interceptor.md#manipulate-response-headers

Credits go to @stefanwright1988 for updating the docs (#724)

[dcarias0388]

Y como pudiera eliminar un encabezado en el onProxyReq?....porque solo me deja modificarlo pero no eliminar.