Unused Variables When Used As Typings

[nahtnam]

I'm still new to TypeScript so apologizes if I misunderstood this issue.

What version of TypeScript are you using?
3.2.2

What version of typescript-eslint-parser are you using?
21.0.2

What code were you trying to parse?

import * as fastify from 'fastify'
import { Server, IncomingMessage, ServerResponse } from 'http'

// Create a http server. We pass the relevant typings for our http version used.
// By passing types we get correctly typed access to the underlying http objects in routes.
// If using http2 we'd pass <http2.Http2Server, http2.Http2ServerRequest, http2.Http2ServerResponse>
const server: fastify.FastifyInstance<Server, IncomingMessage, ServerResponse> = fastify({})

const opts: fastify.RouteShorthandOptions = {
  schema: {
    response: {
      200: {
        type: 'object',
        properties: {
          pong: {
            type: 'string'
          }
        }
      }
    }
  }
}

server.get('/ping', opts, (request, reply) => {
  console.log(reply.res) // this is the http.ServerResponse with correct typings!
  reply.code(200).send({ pong: 'it worked!' })
})

From: https://github.com/fastify/fastify/blob/master/docs/TypeScript.md#example

What did you expect to happen?
No errors relating unused variables.

What happened?
It complains that Server, IncomingMessage, ServerResponse are all unused but technically they are used when defining the server variable.

[j-f1]

Do you have typescript/no-unused-vars enabled?

[JamesHenry]

This issue has been migrated to the new project here: typescript-eslint/typescript-eslint#25

Thanks!