tests/cases/compiler/unusedInterfaceinNamespace1.ts(2,15): error TS6133: 'i1' is declared but its value is never read.


==== tests/cases/compiler/unusedInterfaceinNamespace1.ts (1 errors) ====
    namespace Validation {
        interface i1 {
                  ~~
!!! error TS6133: 'i1' is declared but its value is never read.
    
        }
    }