const phws = require('password-hash-with-salt');

let password = '123456'; // password from user input
let result = await phws.generate(password);

console.log(result.salt); // store the salt to database
consle.log(result.hash); // store the hash as password in database

const phws = require('password-hash-with-salt');

let password = '123456'; // password from user input
let salt = 'read salt from database';
let hash = 'read hash from database';

let result = await phws.verify(password, hash, salt); // returns true or false
if (result) {
    // password is correct
} else {
    // password is incorrect
}