Run Sequence (Function Generator + Promise)

main.js

let firstTask = (resolve, reject) => {
  console.log("first task start");
  setTimeout(resolve, 1000, 'first task success');
}

let secondTask = (resolve, reject) => {
  console.log("second task start");
  setTimeout(reject, 1000, 'second task fail');
}

let thirdTask = (resolve, reject) => {
  console.log("third task start");
  setTimeout(resolve, 1000, 'third task success');
}

runSequence([
  firstTask,
  secondTask,
  thirdTask
]).then(() => {
  console.log("done");
}).catch((error) => {
  console.log(error);
});

runSequence.js

function runSequence(tasks) {
  let tasksPromises = function* () {
    for(var task of tasks) {
      yield new Promise((resolve, reject) => {
        task(resolve, reject);
      })
    }
  }();
  
  let recursivePromise = (__resolve, __reject) => {
    let taskPromise = tasksPromises.next();
    
    if(taskPromise.done) {
      __resolve();
    } else {
      taskPromise.value.then((value) => {
        recursivePromise(__resolve, __reject);
      }).catch((value) => {
        __reject(value);
      });
    }
  }
  
  return new Promise((__resolve, __reject) => {
    recursivePromise(__resolve, __reject);
  })
}