Sequelize.op is not defined

Question

I'm using sequelize with Node.js. I'm trying to use Sequelize.op request. But it doesn't work, this is my code :

var Sequelize = require('sequelize');
const Op = Sequelize.Op;
const operatorsAliases = {
$eq: Op.eq
}

This is the error in the node console :

Do you have any idea ?

Thank you

Answer 1

I found the solution, I updated the sequelize version via npm, and it's work. So the solution is

npm i [email protected] --s

Answer 2

Last version for now:

4.22.2

models/user.js:

const Sequelize = require('sequelize');
const op = Sequelize.Op;
const operatorsAliases = {
    $eq: op.eq,
    $or: op.or,
}

module.exports = function(sequelize) {

    var User = sequelize.define('user', {
        id: { type: Sequelize.INTEGER, primaryKey: true, autoIncrement: true },
        email: { type: Sequelize.STRING },
        username: { type: Sequelize.STRING(120) },
        ...
    });

    User.beforeCreate((user, options) => {
        var where = {
            type: 1,
            deleted: null, 
            // With aliases
            $or: [{email: {$eq: user.email} }, { username: {$eq: user.username}}]
            // Without aliases: Last version
            //[op.or]: [ { email: user.email }, { username: user.username } ]
        };

        return User.findOne({ where: where })
            .then(userFound => {
                ...  
            })
            .catch(err => {
                ...
            });
    });
    ...
    return User;
};