text: 'use strict';
  
  const http = require('http');
  let server = null;
  
  class HTTPServer {
    constructor(port, handler) {
      this.port = port;
      this.server = http.createServer(handler);
      this.server.listen(port, '0.0.0.0');
    }
  }
  
  module.exports = function get(port, handler) {
    return new Promise((resolve) => {
      if (!server) {
        server = new HTTPServer(port, handler);
      }
      // Wait briefly so we can be sure the server
      // is up and listening
      setTimeout(() => resolve(server), 500);
    });
  };
  