fixing runner (don't use ES6 features in JS files!)
fixing runner (don't use ES6 features in JS files!)

switch-education/pxt,switchinnovations/pxt,playi/pxt,switch-education/pxt,playi/pxt,switch-education/pxt,switchinnovations/pxt,switchinnovations/pxt,Microsoft/pxt,playi/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt