promiseAll.js

promiseAll.js

function transferRFQCompany (fromCompanyDetails, toCompanyDetails) {
    return Request.updateMany({ // updateMany already returns a promise right? no need to wrap it in another promise!
      "company.id": fromCompanyDetails._id
    }, {
      $set: {
        company: {
          id: toCompanyDetails._id,
          name: toCompanyDetails.name,
          logo: toCompanyDetails.logo
        }
      }
    })
  });
}


function replaceRFQCreatedBy (fromUserId, toUserDetails) {
  return Request.updateMany({ // updateMany already returns a promise right? no need to wrap it in another promise!
    "createdBy.id": fromUserId
  }, {
    $set: {
      createdBy: {
        id: toUserDetails._id,
        firstName: toUserDetails.firstMame,
        lastName: toUserDetails.lastName
      }
    }
  })
}

function transferFRQ(fromUserId, fromCompanyDetails, toUserDetails, toCompanyDetails,) {
  return Promise.all([
    transferRFQCompany(fromCompanyDetails, toCompanyDetails),
    replaceRFQCreatedBy(fromUserId, toUserDetails)
  ])
}

(async () => {
  try {
      const result = await transferFRQ(...params);
      // `result` is result of .then()
  } catch (e) {
    // `e` is result of .catch()
  }
  
  // or use it in promise-style
  transferFRQ(...params)
    .then(console.log)
    .catch(console.error)
})()

I will test and I will get back to you.

@shierro, could you please test my gist. I have done as you said but I need you to check the nested Promise.all of the main function. thanks in advance brother.
https://gist.github.com/nimatullah/ead58b9ce7081a641f69f7366406b317