invalid explorer error count open typecheck (#4006)
invalid explorer error count open typecheck (#4006)


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