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