text: //// [extendFromAny.ts]
  declare var Base: any;
  class C extends Base {
      known = 1;
      static sknown = 2;
  }
  
  let c = new C();
  c.known.length; // error, 'known' has no 'length' property
  C.sknown.length; // error, 'sknown' has no 'length' property
  c.unknown.length; // ok, unknown: any
  C.sunknown.length; // ok: sunknown: any
  
  
  //// [extendFromAny.js]
  var __extends = (this && this.__extends) || (function () {
      var extendStatics = Object.setPrototypeOf ||
          ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
          function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
      return function (d, b) {
          extendStatics(d, b);
          function __() { this.constructor = d; }
          d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
      };
  })();
  var C = (function (_super) {
      __extends(C, _super);
      function C() {
          var _this = _super !== null && _super.apply(this, arguments) || this;
          _this.known = 1;
          return _this;
      }
      C.sknown = 2;
      return C;
  }(Base));
  var c = new C();
  c.known.length; // error, 'known' has no 'length' property
  C.sknown.length; // error, 'sknown' has no 'length' property
  c.unknown.length; // ok, unknown: any
  C.sunknown.length; // ok: sunknown: any
  