Extending service class fails when transpiling to ES5

[RickEyre]

Steps to reproduce

I'm attempting to extend the Service class in the library like so:

import { Service } from 'feathers-sequelize';

export class SequelizeService extends Service {
  constructor(Model, options = {}) {
    super({ Model, ...options });
  }
}

const service = new Service(MyModel);

I'm also transpiling my code to ES5 using babel.

Expected behavior

The service should be created.

Actual behavior

Breaks at runtime with the following error:

TypeError: Class constructor Service cannot be invoked without 'new'

I believe this is because my transpiled code isn't trying to call the ES6 as a function without the new keyword.

If there was an ES5 version of the package published I'd be able to extend.

Or is there a better way on my end to solve this?

[daffl]

This is a known Babel issue (see babel/babel#6299).

Since feathers-sequelize is a server side module and is not intended to be used with Node 4 or older there should be no reason to transpile to ES5 though. I recommend using Node 6 (or ES2015) as the transpilation target.

[RickEyre]

Worked perfectly. Thank you!