WARN: No gulpfile found!

Upgraded my project and make sure everything looks the same as per a blank starter project with regards to gulpfile.js, ionic.config.json, etc.

When going ‘ionic build ios’ I get:
WARN: No gulpfile found!
If your app requires a build step, you may want to ensure it runs before build.

The gulpfile.js is definitely present.

I also get this on one of my machines after upgrading to beta 11. Works on one machine but not the other (both windows 10). I get it when running ionic serve. The bundle is not built, and the js files all end up in the same folders as the .ts files

Having the same problem.

Did you guys ever come up with a solution?