node:http(s): null value is not allowed for header value

[kt3k]

null value is allowed for request.setHeader value in Node.js, but it doesn't in Deno

import http from "node:http";
const req = http.request("http://localhost:8000")
req.setHeader("x-foo", null)

The above sends the header Headers { connection: "close", host: "0.0.0.0:8000", "x-foo": "null" } in Node.js

[kt3k]

This incompatibility caused an issue in twisted Sansossio/twisted#97