Rubymine syntax highlighting in js.erb files with ES6

I think there is a bug when parsing .js.erb files when we want ES6 format.

We want to reference a class library in a gem so we are using .erb so we can do

import "<%= MyHelper.helperfunction('path/to/Feature.js') %>";

So, if our code snippet looks like this (example.js.erb) it reports an error where `data=> {` is :

import "<%= MyHelper.helperfunction('path/to/Feature.js') %>";

export default class MyClass extends Feature {
  static get defaultConfig() {
    return {
      features: {
        eventTooltip: {
          template: data => {
            const sd = DateHelper.format(data.eventRecord.startDate, 'LL');
            const ed = DateHelper.format(data.eventRecord.endDate, 'LL');
          }
        }
      }
    }
  }
}

When we have it (as example.js) we don't get any error:

import Feature from 'Feature';

export default class MyClass extends Feature {
  static get defaultConfig() {
    return {
      features: {
        eventTooltip: {
          template: data => {
            const sd = DateHelper.format(data.eventRecord.startDate, 'LL');
            const ed = DateHelper.format(data.eventRecord.endDate, 'LL');
          }
        }
      }
    }
  }
}