ngx-spinner
A library with more than 50 different loading spinners for Angular 4 - 17. (https://napster2210.github.io/ngx-spinner/)
ng-mocks
An Angular testing library for creating mock services, components, directives, pipes and modules in unit tests. It provides shallow rendering, precise stubs to fake child dependencies. ng-mocks works with Angular 5 6 7 8 9 10 11 12 13 14 15 16 17 18, jasm