coverage decreased (-6.7%) to 87.222% due to upgrading angular to 6.1?

[gms1]

missing branches in import statements ?
see https://coveralls.io/builds/18171463/source?filename=projects/angular-dynaform/core/src/lib/dynamic-form.module.ts

[gms1]

missing branches in empty lines?
see https://coveralls.io/builds/18171463/source?filename=projects/angular-dynaform/core/src/public_api.ts
vs
last: https://coveralls.io/builds/18103651/source?filename=projects/angular-dynaform/core/src/public_api.ts

[gms1]

see:
angular/angular-cli#11672

[gms1]

fixed by setting "sourceMap": true in angular.json test sections; see:
angular/angular-cli#11672