Feature request: option to create class-based models with model:generate

[HugoDF]

What you are doing?

I'm generating models using:

npx sequelize model:generate --name MyModel --attributes myField:string

What do you expect to happen?

I'm using models using ES6 class syntax which look like the following:

'use strict';
const { Model } = require("sequelize");
class MyModel extends Model {
  static init(sequelize, DataTypes) {
    return super.init(
      {
        myField: DataTypes.STRING
      },
      { sequelize }
    );
  }
  static associate (models) {
    // associations can be defined here
  }
}

What is actually happening?

'use strict';
module.exports = (sequelize, DataTypes) => {
  var MyModel = sequelize.define('MyModel', {
    myField: DataTypes.STRING
  }, {});
  MyModel.associate = function(models) {
    // associations can be defined here
  };
  return MyModel;
};

This isn't a bug as much as a feature request, I would be happy to contribute a an ES6 class model template and to have a CLI flag to toggle to it if this is something you guys are keen to have.

Dialect: postgres
Sequelize CLI version: 4.0.0
Sequelize version: 4.37.5