defineInjectorlink

说明link

This should be assigned to a static ngInjectorDef field on a type, which will then be an InjectorType.

Options:

• factory: an InjectorType is an instantiable type, so a zero argument factory function to create the type must be provided. If that factory function needs to inject arguments, it can use the inject function.
• providers: an optional array of providers to add to the injector. Each provider must either have a factory or point to a type which has an ngInjectableDef static property (the type must be an InjectableType).
• imports: an optional array of imports of other InjectorTypes or InjectorTypeWithModules whose providers will also be added to the injector. Locally provided types will override providers from imports.