Using callback function inside array.map javascript

Question

I am trying to bcrypt password for every user in an array.

router.post(\"/insertuser\", (req, res) => {

  var promises = users.map((item) => {

    bcrypt         


        

Answer 1

Simply return the promise from bcrypt.genSalt.

router.post("/insertuser", (req, res) => {

  var promises = users.map((item) => {

    return bcrypt.genSalt(10)
      .then((salt) => {
        return item
      })    
  })

  Promise.all(promises)
    .then((results) => {
      console.log(results)
      res.json({
        "data": results
      })
    })    
})//end route