Alex Rickabaugh 7ac34e42a0 feat: allow direct scoping of @Injectables to the root injector (#22185)
@Injectable() supports a scope parameter which specifies the target module.
However, it's still difficult to specify that a particular service belongs
in the root injector. A developer attempting to ensure that must either
also provide a module intended for placement in the root injector or target
a module known to already be in the root injector (e.g. BrowserModule).
Both of these strategies are cumbersome and brittle.

Instead, this commit adds a token APP_ROOT_SCOPE which provides a
straightforward way of targeting the root injector directly, without
requiring special knowledge of modules within it.

PR Close #22185
2018-02-15 14:20:27 -08:00
2017-01-27 15:03:11 -06:00

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