1 import { Express } from 'express'
2 import { Server } from 'http'
3 import { AddressInfo } from 'net'
5 function randomListen (app: Express) {
6 return new Promise<Server>(res => {
7 const server = app.listen(0, () => res(server))
11 function getPort (server: Server) {
12 const address = server.address() as AddressInfo
17 function terminateServer (server: Server) {
18 if (!server) return Promise.resolve()
20 return new Promise<void>((res, rej) => {
22 if (err) return rej(err)