generator-option-type

index.js

'use strict';

var Base = require('yeoman-generator');

module.exports = Base.extend({
  constructor() {
    Base.apply(this, arguments);

    this.option('aBoolOpt', {
      type: Boolean
    });
  }

  , initializing: {
    doIt: function doIt() {
      console.log('typeof aBoolOpt: ' + (typeof this.options.aBoolOpt));
    }
  }
});

I've got the same issue, turns out that we cannot use both ES6's object method shorthand and arrow functions as a constructor. 😞

https://stackoverflow.com/a/45119651/2013891