如何让Typescript等待函数执行

async function waitFunction(): Promise<void> {
  await new Promise(resolve => setTimeout(resolve, 2000)); // 等待2秒
  console.log('等待结束');
}

waitFunction();

function waitFunction(callback: () => void): void {
  setTimeout(() => {
    console.log('等待结束');
    callback();
  }, 2000); // 等待2秒
}

waitFunction(() => {
  // 在回调函数中处理等待结束后的逻辑
});

class WaitEmitter {
  private listeners: (() => void)[] = [];

  waitFunction(): void {
    setTimeout(() => {
      console.log('等待结束');
      this.emit();
    }, 2000); // 等待2秒
  }

  onWaitEnd(callback: () => void): void {
    this.listeners.push(callback);
  }

  private emit(): void {
    this.listeners.forEach(callback => callback());
  }
}

const emitter = new WaitEmitter();
emitter.onWaitEnd(() => {
  // 在事件监听器中处理等待结束后的逻辑
});
emitter.waitFunction();