Swiper widget error in console

My code was working fine yesterday, and now I get the errors below. Note that I am not using swiper nor any imports for it. I am using Windows 10 and ionic@beta. How can I get rid of these errors as my code doesn’t build?

ERROR in [default] D:/ionic/MyIonic2Project/node_modules/ionic-framework/components/slides/swiper-widget.d.ts:8:2
’update’, which lacks return-type annotation, implicitly has an ‘any’ return type.

ERROR in [default] D:/ionic/MyIonic2Project/node_modules/ionic-framework/components/slides/swiper-widget.d.ts:9:2
’slideNext’, which lacks return-type annotation, implicitly has an ‘any’ return type.

ERROR in [default] D:/ionic/MyIonic2Project/node_modules/ionic-framework/components/slides/swiper-widget.d.ts:10:2
’slidePrev’, which lacks return-type annotation, implicitly has an ‘any’ return type.

I updated from alpha.54 to alpha.56 and still have the same error messages.

Your system information:

Cordova CLI: 6.0.0
Gulp version: CLI version 3.9.0
Gulp local:
Ionic Version: 2.0.0-alpha.56
Ionic CLI Version: 2.0.0-beta.17
Ionic App Lib Version: 2.0.0-beta.8
OS:
Node Version: v5.1.0