The Model has a field:

...
email: {
    type: Sequelize.STRING,
    allowNull: false,
    unique: true
},
...

Which works fine when saving the model.

The update:

 const user = await User.update(
     { email, <other fields> },
     { where: { id } }
 )

It has to work if the user doesn’t change the e-mail or any other field. It should fail only if the e-mail is changed to another existing e-mail in database. I know in Laravel it has that option, but how to make that work in Sequelize?