fix(25770): Bad error message for type used as index#39973

Merged

DanielRosenwasser merged 1 commit intomicrosoft:masterfrom a-tarasyuk:bug/25770

Aug 21, 2020

+251-4

Commits on Aug 21, 2020

fix(25770): add diagnostic message for the possible mapped type used as an index
a-tarasyuk
committed