tests/cases/compiler/inOperator.ts(7,15): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter
==== tests/cases/compiler/inOperator.ts (1 errors) ====
var a=[];
for (var x in a) {}
if (3 in a) {}
var b = '' in 0;
~
!!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter
var c: any;
var y: number;
if (y in c) { }