Ionic serve gives error first time but after removing blank lines no error?

This one is very strange.

When I run the project with ionic serve first time it always gives a bunch of typescript error.

Then I go atom editor I remove some blank lines from any ts file it rebuilds and everything is fine??

I had this error for a while i didnt care but now I’m trying to test app on android but this doesn’t let me do it.

i just solved the problem