tests/cases/compiler/overloadResolutionOverCTLambda.ts(2,5): error TS2345: Argument of type '(a: number) => number' is not assignable to parameter of type '(item: number) => boolean'.
==== tests/cases/compiler/overloadResolutionOverCTLambda.ts (1 errors) ====
function foo(b: (item: number) => boolean) { }
foo(a => a); // can not convert (number)=>bool to (number)=>number
~~~~~~
!!! error TS2345: Argument of type '(a: number) => number' is not assignable to parameter of type '(item: number) => boolean'.