Type Error on Transpiling Babel class.default is not a constructor - node.js

Question

'use strict';
/**
* PortalHTML.js
*/
import SingleContextHTML from './SingleContextHTML';
import MultiContextHTML from './MultiContextHTML';
export default class PortalHTML{
constructor (type) {
switch(type) {
case "1":
this.portalStrategy = new SingleContextHTML();
break;
default:
this.portalStrategy = new MultiContextHTML();
break;
}
}
render (...args) {
this.portalStrategy.renderHTML(args);
}
_strategyPeak(){
return this.portalStrategy.constructor.name;
}
}
/**
* SingleContextHTML.js
*/
'use strict';
import PortalHTMLStrategy from './PortalHTMLStrategy';
export default class SingleContextHTML extends PortalHTMLStrategy {
constructor(){
super()
}
renderHTML(args){}
}
/**
* Multi.js (same as single) ^^ above
*/
/**
* PortalHTMLStrategy.js
*/
'use strict';
export default class PortalHTMLStrategy{
constructor(){}
renderHTML(args){}
}
/**
* Tester Mocha and Chai
*/
'use strict';
import PortalHTML from "./PortalHTML";
import chai from 'chai';
let basicPortalHTMLTest = () => {
let singleContextHTML = new PortalHTML("1");
let multiContextHTML = new PortalHTML("multi");
describe('PortalHTML: Initialization of PortalHTML', () => {
it('Should be an instance of class SingleContextHTML', (done) => {
chai.expect(singleContextHTML._strategyPeak()).to.equal('SingleContextHTML');
done();
});
it('Should be an instance of MultiContextHTML', (done) => {
chai.expect(singleContextHTML._strategyPeak()).to.equal('MultiContextHTML');
done();
});
});
};
basicPortalHTMLTest();
I am trying to test an implementation of a strategy pattern, but I am running into an error that states the following after I run my test script with mocha.
var singleContextHTML = new _PortalHTML2.default("1");
^
TypeError: _PortalHTML2.default is not a constructor
I am using node6 and the following babel packages:
"babel-cli": "^6.14.0",
"babel-core": "^6.17.0",
"babel-loader": "^6.2.4",
"babel-preset-es2015": "^6.16.0",
"babel-preset-react": "^6.11.1",
"babel-preset-stage-2": "^6.11.0"
I have been trying to debug this for around half a day. If anyone sees anything immediately wrong that I am doing I would be extremely grateful.

Answer 1

I was using the incorrect babel preset. Switching over to es2016 or above fixed this error.