Version 6 filesize.d.ts is empty & not declared in package.json

[manferlo81]

As of version 6.0.0 I noticed your filesize.d.ts file is empty. I noticed because is braking my ci test. I checked version 5.0.3 and the types are still there.

[manferlo81]

your "types" field in package.json was removed on 3909b04d72b7a8129d94a03612898feedf4d39b3 that's another reason your types are not working.

[marcneander]

Please fix this :)