'resume' 事件

每当 input 流恢复时，则会触发 'resume' 事件。

调用监听器函数时不传入任何参数。

rl.on('resume', () => {
  console.log('Readline resumed.');
});

The 'resume' event is emitted whenever the input stream is resumed.

The listener function is called without passing any arguments.

rl.on('resume', () => {
  console.log('Readline resumed.');
});