tests/cases/compiler/functionWithNoBestCommonType2.ts(1,9): error TS2354: No best common type exists among return expressions. ==== tests/cases/compiler/functionWithNoBestCommonType2.ts (1 errors) ==== var v = function () { ~~~~~~~~ !!! error TS2354: No best common type exists among return expressions. return true; return bar(); }; function bar(): void { }