1'use strict'; 2require('../common'); 3const assert = require('assert'); 4const { ReadStream, WriteStream } = require('tty'); 5 6{ 7 // Verify that tty.ReadStream can be constructed without new. 8 const stream = ReadStream(0); 9 10 stream.unref(); 11 assert(stream instanceof ReadStream); 12 assert.strictEqual(stream.isTTY, true); 13} 14 15{ 16 // Verify that tty.WriteStream can be constructed without new. 17 const stream = WriteStream(1); 18 19 assert(stream instanceof WriteStream); 20 assert.strictEqual(stream.isTTY, true); 21} 22