text: //// [objectTypesIdentityWithGenericConstructSignaturesOptionalParams.ts]
  // Two call or construct signatures are considered identical when they have the same number of type parameters and, considering those 
  // parameters pairwise identical, have identical type parameter constraints, identical number of parameters with identical kind(required, 
  // optional or rest) and types, and identical return types.
  
  class B<T> {
      constructor(x: T, y?: T) { return null; }
  }
  
  class C<T> {
      constructor(x: T, y?: T) { return null; }
  }
  
  interface I<T> {
      new(x: T, y?: T): B<T>;
  }
  
  interface I2 {
      new<T>(x: T, y?: T): C<T>;
  }
  
  var a: { new<T>(x: T, y?: T): B<T> }
  var b = { new<T>(x: T, y?: T) { return new C<T>(x, y); } }; // not a construct signature, function called new
  
  function foo1b(x: B<string>);
  function foo1b(x: B<string>); // error
  function foo1b(x: any) { }
  
  function foo1c(x: C<string>);
  function foo1c(x: C<string>); // error
  function foo1c(x: any) { }
  
  function foo2(x: I<string>);
  function foo2(x: I<string>); // error
  function foo2(x: any) { }
  
  function foo3(x: typeof a);
  function foo3(x: typeof a); // error
  function foo3(x: any) { }
  
  function foo4(x: typeof b);
  function foo4(x: typeof b); // error
  function foo4(x: any) { }
  
  function foo8(x: B<string>): string;
  function foo8(x: I<string>): number; // BUG 832086
  function foo8(x: any): any { }
  
  function foo9(x: B<string>);
  function foo9(x: C<string>); // error, differ only by return type
  function foo9(x: any) { }
  
  function foo10(x: B<string>);
  function foo10(x: typeof a); // BUG 832086
  function foo10(x: any) { }
  
  function foo11(x: B<string>);
  function foo11(x: typeof b); // ok
  function foo11(x: any) { }
  
  function foo12(x: I<string>);
  function foo12(x: C<string>); // ok
  function foo12(x: any) { }
  
  function foo12b(x: I2);
  function foo12b(x: C<string>); // BUG 832086
  function foo12b(x: any) { }
  
  function foo13(x: I<string>);
  function foo13(x: typeof a); // BUG 832086
  function foo13(x: any) { }
  
  function foo14(x: I<string>);
  function foo14(x: typeof b); // ok
  function foo14(x: any) { }
  
  //// [objectTypesIdentityWithGenericConstructSignaturesOptionalParams.js]
  // Two call or construct signatures are considered identical when they have the same number of type parameters and, considering those
  // parameters pairwise identical, have identical type parameter constraints, identical number of parameters with identical kind(required,
  // optional or rest) and types, and identical return types.
  var B = (function () {
      function B(x, y) {
          return null;
      }
      return B;
  })();
  
  var C = (function () {
      function C(x, y) {
          return null;
      }
      return C;
  })();
  
  var a;
  var b = { new: function (x, y) {
          return new C(x, y);
      } };
  
  function foo1b(x) {
  }
  
  function foo1c(x) {
  }
  
  function foo2(x) {
  }
  
  function foo3(x) {
  }
  
  function foo4(x) {
  }
  
  function foo8(x) {
  }
  
  function foo9(x) {
  }
  
  function foo10(x) {
  }
  
  function foo11(x) {
  }
  
  function foo12(x) {
  }
  
  function foo12b(x) {
  }
  
  function foo13(x) {
  }
  
  function foo14(x) {
  }
  