What are “decorators” and how are they used?

Question

I\'m curious what exactly decorators are in AngularJS. There isn\'t much information online for decorators save for a blurb in the AngularJS documentation and a brief (albei

Answer 1

decorator can intercept service instance created by factory, service, value, provider, and gives the options to change some instance(service) that is otherwise not configurable / with options.

It can also provide mock up instances for testing purpose, for example $http.