classExtendingPrimitive.ts(3,17): error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
classExtendingPrimitive.ts(4,18): error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
classExtendingPrimitive.ts(5,18): error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.
classExtendingPrimitive.ts(6,18): error TS2304: Cannot find name 'Void'.
classExtendingPrimitive.ts(7,19): error TS1109: Expression expected.
classExtendingPrimitive.ts(8,18): error TS2304: Cannot find name 'Null'.
classExtendingPrimitive.ts(10,18): error TS2507: Type 'undefined' is not a constructor function type.
classExtendingPrimitive.ts(11,18): error TS2552: Cannot find name 'Undefined'. Did you mean 'undefined'?
classExtendingPrimitive.ts(14,18): error TS2507: Type 'typeof E' is not a constructor function type.
classExtendingPrimitive.ts(16,26): error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
classExtendingPrimitive.ts(17,27): error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
classExtendingPrimitive.ts(18,27): error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.
classExtendingPrimitive.ts(20,29): error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
classExtendingPrimitive.ts(21,29): error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
classExtendingPrimitive.ts(22,29): error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.


==== classExtendingPrimitive.ts (15 errors) ====
    // classes cannot extend primitives
    
    class C extends number { }
                    ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
    class C2 extends string { }
                     ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
    class C3 extends boolean { }
                     ~~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.
    class C4 extends Void  { }
                     ~~~~
!!! error TS2304: Cannot find name 'Void'.
    class C4a extends void {}
                      ~~~~
!!! error TS1109: Expression expected.
    class C5 extends Null { }
                     ~~~~
!!! error TS2304: Cannot find name 'Null'.
    class C5a extends null { }
    class C6 extends undefined { }
                     ~~~~~~~~~
!!! error TS2507: Type 'undefined' is not a constructor function type.
    class C7 extends Undefined { }
                     ~~~~~~~~~
!!! error TS2552: Cannot find name 'Undefined'. Did you mean 'undefined'?
    
    enum E { A }
    class C8 extends E { }
                     ~
!!! error TS2507: Type 'typeof E' is not a constructor function type.
    
    const C9 = class extends number { }
                             ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
    const C10 = class extends string { }
                              ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
    const C11 = class extends boolean { }
                              ~~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.
    
    const C12 = class A extends number { }
                                ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'number'. Classes can only extend constructable values.
    const C13 = class B extends string { }
                                ~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'string'. Classes can only extend constructable values.
    const C14 = class C extends boolean { }
                                ~~~~~~~
!!! error TS2863: A class cannot extend a primitive type like 'boolean'. Classes can only extend constructable values.
    