要求设计 LazyMan 类，实现以下功能。

[MrSeaWave]

LazyMan('Tony');
// Hi I am Tony

LazyMan('Tony').sleep(10).eat('lunch');
// Hi I am Tony
// 等待了10秒...
// I am eating lunch

LazyMan('Tony').eat('lunch').sleep(10).eat('dinner');
// Hi I am Tony
// I am eating lunch
// 等待了10秒...
// I am eating diner

LazyMan('Tony').eat('lunch').eat('dinner').sleepFirst(5).sleep(10).eat('junk food');
// Hi I am Tony
// 等待了5秒...
// I am eating lunch
// I am eating dinner
// 等待了10秒...
// I am eating junk food

[MrSeaWave]

class LazyManCl {
  constructor(name) {
    this._queue = [];
    this._init(name);
  }

  _init(name) {
    console.log(`I'm ${name}`);
    // 主任务都执行完毕后开始执行第一次
    Promise.resolve().then(() => {
      console.log('12');
      this._next();
    });
  }

  eat(str) {
    this._queue.push(() => {
      console.log(`I am eating ${str}`);
      this._next();
    });
    return this;
  }

  sleep(time) {
    this._queue.push(() => {
      this._sleep(time).then(() => {
        console.log(`等待了${time}秒...`);
        this._next();
      });
    });
    return this;
  }

  sleepFirst(time) {
    this._queue.unshift(() => {
      this._sleep(time).then(() => {
        console.log(`等待了${time}秒...`);
        this._next();
      });
    });
    return this;
  }

  _sleep(time) {
    return new Promise((resolve) => setTimeout(resolve, time * 1000));
  }

  _next() {
    const fn = this._queue.shift();
    fn && fn();
  }
}

function LazyMan(name) {
  return new LazyManCl(name);
}

LazyMan('Tony');
// Hi I am Tony

LazyMan('Tony').sleep(10).eat('lunch');
// Hi I am Tony
// 等待了10秒...
// I am eating lunch

LazyMan('Tony').eat('lunch').sleep(10).eat('dinner');
// Hi I am Tony
// I am eating lunch
// 等待了10秒...
// I am eating diner

LazyMan('Tony')
  .eat('lunch')
  .eat('dinner')
  .sleepFirst(5)
  .sleep(10)
  .eat('junk food');
// // Hi I am Tony
// // 等待了5秒...
// // I am eating lunch
// // I am eating dinner
// // 等待了10秒...
// // I am eating junk food

[MrSeaWave]

class LazyManClass {
  constructor(name) {
    this.name = name;
    console.log("Hi, I'm ", name);
    this.queue = [];

    setTimeout(() => this.run(), 0);
  }

  async run() {
    console.log('this.queue', this.queue);
    for (let i = 0; i < this.queue.length; i++) {
      await this.queue[i]();
    }
  }

  sleep(time) {
    this.queue.push(async () => {
      console.log(`等待了${time}s`);
      await this._sleep(time);
    });
    return this;
  }

  eat(str) {
    this.queue.push(() => {
      console.log(`I am eating ${str}`);
    });
    return this;
  }

  sleepFirst(time) {
    this.queue.unshift(async () => {
      console.log(`等待了${time}s`);
      await this._sleep(time);
    });
    return this;
  }

  _sleep(time) {
    return new Promise((resolve) => {
      setTimeout(resolve, time * 1000);
    });
  }
}

function LazyMan(name) {
  return new LazyManClass(name);
}

// LazyMan('Tony').sleep(10).eat('lunch');
LazyMan('Tony')
  .eat('lunch')
  .eat('dinner')
  .sleepFirst(5)
  .sleep(10)
  .eat('junk food');

[MrSeaWave]

class LazyManCls {
  constructor(name) {
    console.log(`Hi I am ${name}`);
    this.queue = [];
    this._run();
  }

  _run() {
    Promise.resolve().then(async () => {
      for (let i in this.queue) {
        await this.queue[i]();
      }
    });
  }

  eat(type) {
    this.queue.push(() => {
      console.log(`I am eating ${type}`);
    });
    return this;
  }

  sleep(time) {
    this.queue.push(() => {
      return this._sleep(time);
    });
    return this;
  }

  sleepFirst(time) {
    this.queue.unshift(() => {
      return this._sleep(time);
    });
    return this;
  }

  _sleep(time) {
    return new Promise((resolve) => {
      console.log(`等待了 ${time} 秒`);
      setTimeout(resolve, time * 1000);
    });
  }
}

function LazyMan(name) {
  return new LazyManCls(name);
}