==== tests/cases/conformance/types/primitives/null/validNullAssignments.ts (5 errors) ====
    var a: number = null;
    var b: boolean = null;
    var c: string = null;
    var d: void = null;
    
    var e: typeof undefined = null;
    e = null; // ok
    
    enum E { A }
    E.A = null; // error
    ~~~
!!! Invalid left-hand side of assignment expression.
    
    class C { foo: string }
    var f: C;
    f = null; // ok
    C = null; // error
    ~
!!! Invalid left-hand side of assignment expression.
    
    interface I { foo: string }
    var g: I;
    g = null; // ok
    I = null; // error
    ~
!!! Cannot find name 'I'.
    
    module M { export var x = 1; }
    M = null; // error
    ~
!!! Invalid left-hand side of assignment expression.
    
    var h: { f(): void } = null;
    
    function i<T>(a: T) {
        a = null;
    }
    i = null; // error
    ~
!!! Invalid left-hand side of assignment expression.