==== tests/cases/compiler/noImplicitAnyFunctionExpressionAssignment.ts (2 errors) ====
    
    var x: (a: any) => void = function <T>(x: T) {
                              ~~~~~~~~~~~~~~~~~~~~
        return null;
    ~~~~~~~~~~~~~~~~
    };
    ~
!!! Function expression, which lacks return-type annotation, implicitly has an 'any' return type.
    
    var x2: (a: any) => void = function f<T>(x: T) {
                               ~~~~~~~~~~~~~~~~~~~~~
        return null;
    ~~~~~~~~~~~~~~~~
    };
    ~
!!! 'f', which lacks return-type annotation, implicitly has an 'any' return type.