实现 LazyMan

LazyMan("Hank");
// 输出：
// Hi!This is Hank!
 
LazyMan("Hank").sleep(10).eat("dinner");
// 输出：
// Hi! This is Hank!
// 等待10秒..
// Wake up after 10
// Eat dinner~
 
LazyMan("Hank").eat("dinner").eat("supper");
// 输出：
// Hi This is Hank!
// Eat dinner~
// Eat supper~
 
LazyMan("Hank").sleepFirst(5).eat("supper");
// 输出：
// 等待5秒..
// Wake up after 5
// Hi This is Hank!
// Eat supper

function LazyMan(name) {
  console.log(`Hi! This is ${name}!`);
}
LazyMan.prototype.sleep = function (time) {
  const timeInMiliSec = time * 1000;
  const start = performance.now();
  console.log(`Wait for ${time} seconds...`);
  while (performance.now() - start <= timeInMiliSec) {}
  console.log(`Wake up after ${time} seconds.`);
  return this;
};
LazyMan.prototype.sleepFirst = function (time) {
  return this.sleep(time);
};
LazyMan.prototype.eat = function (thing) {
  console.log(`Eat ${thing}~~`);
  return this;
};

function LazyMan(name) {
  if (!(this instanceof LazyMan)) {
    return new LazyMan(name);
  }
 
  this.tasks = [];
 
  // 添加初始问候任务
  this.tasks.push(async () => {
    console.log(`Hi! This is ${name}!`);
  });
 
  // 开始执行任务队列
  this.runTasks();
 
  return this;
}
 
LazyMan.prototype.runTasks = async function () {
  setTimeout(async () => {
    for (const task of this.tasks) {
      await task();
    }
  }, 0);
};
 
LazyMan.prototype.sleep = function (seconds) {
  this.tasks.push(async () => {
    console.log(`等待${seconds}秒..`);
    await new Promise((resolve) => setTimeout(resolve, seconds * 1000));
    console.log(`Wake up after ${seconds}`);
  });
  return this;
};
 
LazyMan.prototype.sleepFirst = function (seconds) {
  this.tasks.unshift(async () => {
    console.log(`等待${seconds}秒..`);
    await new Promise((resolve) => setTimeout(resolve, seconds * 1000));
    console.log(`Wake up after ${seconds}`);
  });
  return this;
};
 
LazyMan.prototype.eat = function (food) {
  this.tasks.push(async () => {
    console.log(`Eat ${food}~`);
  });
  return this;
};

class LazyLazyMan {
  constructor(name) {
    this.tasks = [];
 
    // 添加初始问候任务
    this.tasks.push(async () => {
      console.log(`Hi! This is ${name}!`);
    });
 
    // 开始执行任务队列
    this.runTasks();
  }
 
  async runTasks() {
    setTimeout(async () => {
      for (const task of this.tasks) {
        await task();
      }
    }, 0);
  }
 
  sleep(seconds) {
    this.tasks.push(async () => {
      console.log(`等待${seconds}秒..`);
      await new Promise((resolve) => setTimeout(resolve, seconds * 1000));
      console.log(`Wake up after ${seconds}`);
    });
    return this;
  }
 
  sleepFirst(seconds) {
    this.tasks.unshift(async () => {
      console.log(`等待${seconds}秒..`);
      await new Promise((resolve) => setTimeout(resolve, seconds * 1000));
      console.log(`Wake up after ${seconds}`);
    });
    return this;
  }
 
  eat(food) {
    this.tasks.push(async () => {
      console.log(`Eat ${food}~`);
    });
    return this;
  }
}
 
function LazyMan(name) {
  return new LazyLazyMan(name);
}