'use strict'; const common = require('../common'); const assert = require('assert'); const net = require('net'); const server = net.createServer().listen(0, connectToServer); function connectToServer() { const client = net.createConnection(this.address().port, () => { assert.throws(() => client.write(1337), common.expectsError({ code: 'ERR_INVALID_ARG_TYPE', type: TypeError })); client.end(); }) .on('end', () => server.close()); }