How can I access Node type interfaces inside "modules"?

[Sequoia]

myHandler.js

/**
 * @param {NodeJS.http.IncomingMessage} req 
 * @param {http.IncomingMessage} res 
 */
function handleRequest(req, res){
  req._
}

Node built in (or ATA'd) types:

//...
declare module "http" {
//...
    export interface IncomingMessage extends stream.Readable {

Expected

I can somehow mark req in my function as being of type http.IncomingMessage

Actual

It's impossible to get these types linked unless I manually create an object thus

const req = new (require('http').IncomingMessage);

Or use a function that http exposes that uses that type like createServer.

[mjbvz]

One options:

import * as http from 'http'

/**
 * @param {http.IncomingMessage} req 
 * @param {http.IncomingMessage} res 
 */
function handleRequest(req, res){
  req._
}

We currently don't support this properly when using require though. We tracking better support here on the TypeScript side: microsoft/TypeScript#14056

We are also investigating a better solution for this in JavaScript files: microsoft/TypeScript#14377

Closing as upstream