node_modules/@angular/core/index"' has no exported member 'NgModule'. in VS2015

[Thambi80]

Hi,

I am getting below while rebuild my solution in VS2015 with Angular2

Severity Code Description Project File Line Suppression State
Error Build:Module '"C:/Users/krishma2/Documents/Visual Studio 2015/Projects/A2Demo/A2Demo/node_modules/@angular/core/index"' has no exported member 'NgModule'. A2Demo c:\users\krishma2\documents\visual studio 2015\Projects\A2Demo\A2Demo\app\app.module.ts 1
Error Build:Module '"C:/Users/krishma2/Documents/Visual Studio 2015/Projects/A2Demo/A2Demo/node_modules/@angular/platform-browser/index"' has no exported member 'BrowserModule'. A2Demo c:\users\krishma2\documents\visual studio 2015\Projects\A2Demo\A2Demo\app\app.module.ts 2
Error Build:Module '"C:/Users/krishma2/Documents/Visual Studio 2015/Projects/A2Demo/A2Demo/node_modules/@angular/platform-browser-dynamic/index"' has no exported member 'platformBrowserDynamic'. A2Demo c:\users\krishma2\documents\visual studio 2015\Projects\A2Demo\A2Demo\app\main.ts 1
Error Build:Class 'Subject' incorrectly extends base class 'Observable'. A2Demo c:\users\krishma2\documents\visual studio 2015\Projects\A2Demo\A2Demo\node_modules\rxjs\Subject.d.ts 9
Error TS2305 Module '"C:/Users/krishma2/Documents/Visual Studio 2015/Projects/A2Demo/A2Demo/node_modules/@angular/core/index"' has no exported member 'NgModule'. TypeScript Virtual Projects c:\users\krishma2\documents\visual studio 2015\Projects\A2Demo\A2Demo\app\app.module.ts 1 Active

Could you please advise any one to fix it.