text: //// [unusedInterfaceinNamespace5.ts]
  namespace Validation {
      interface i1 {
  
      }
  
      export interface i2 {
  
      }
  
      interface i3 extends i1 {
  
      }
  
      export class c1 implements i3 {
  
      }
  
      interface i4 {
  
      }
  
      export let c2:i4;
  }
  
  //// [unusedInterfaceinNamespace5.js]
  var Validation;
  (function (Validation) {
      var c1 = /** @class */ (function () {
          function c1() {
          }
          return c1;
      }());
      Validation.c1 = c1;
  })(Validation || (Validation = {}));
  