text: //// [errorOnContextuallyTypedReturnType.ts]
  var n1: () => boolean = function () { }; // expect an error here
  var n2: () => boolean = function ():boolean { }; // expect an error here
  
  
  //// [errorOnContextuallyTypedReturnType.js]
  var n1 = function () {
  }; // expect an error here
  var n2 = function () {
  }; // expect an error here
  