tests/cases/compiler/classExtendsInterfaceInModule.ts(5,18): error TS2689: Cannot extend an interface 'M.I1'. Did you mean 'implements'?
tests/cases/compiler/classExtendsInterfaceInModule.ts(6,21): error TS2689: Cannot extend an interface 'M.I2'. Did you mean 'implements'?
tests/cases/compiler/classExtendsInterfaceInModule.ts(14,17): error TS2689: Cannot extend an interface 'Mod.Nested.I'. Did you mean 'implements'?


==== tests/cases/compiler/classExtendsInterfaceInModule.ts (3 errors) ====
    module M {
      export interface I1 {}
      export interface I2<T> {}
    }
    class C1 extends M.I1 {}
                     ~
!!! error TS2689: Cannot extend an interface 'M.I1'. Did you mean 'implements'?
    class C2<T> extends M.I2<T> {}
                        ~
!!! error TS2689: Cannot extend an interface 'M.I2'. Did you mean 'implements'?
    
    module Mod {
    	export namespace Nested {
    		export interface I {}
    	}
    }
    
    class D extends Mod.Nested.I {}
                    ~~~
!!! error TS2689: Cannot extend an interface 'Mod.Nested.I'. Did you mean 'implements'?
    