sdd.js

let check_files = function () {
  return new Promise((resolve, reject) => {
    resolve("I checked files, ");
  });
};
let make_calls = function (message) {
  return new Promise((resolve, reject) => {
    resolve(message + "," + "I made all important calls");
  });
};
let paticipate_meeting = function (message) {
  return new Promise((resolve, reject) => {
    resolve(message + "," + "I participated in the meeting");
  });
};

let go_home = function (message) {
  return new Promise((resolve, reject) => {
    resolve(message + "," + " Now I am going home. ");
  });
};

check_files()
  .then((value) => {
    return make_calls(value);
  })
  .then((value) => {
    return paticipate_meeting(value);
  })
  .then((value) => {
    return go_home(value);
  })
  .then((value) => {
    console.log(value + "At last am going to sleep");
  });