How does Dependency injection work in AngularDart?

Question

Say I have a class, Logger, which is not a component, which uses ServiceA (marked as Injectable). Logger's constructor look like:

Logger(this._logger);

Will AngularDart implicitly pass ServiceA to Logger upon instantiation even though Logger is not a component or directive? The AngularDart docs are unclear on this.

Shouldn't your code example look like `Logger(this._serviceA);`? — Günter Zöchbauer, Dec 14 '15 at 17:10
Possible duplicate of [How does AngularDart dependency injection work?](https://stackoverflow.com/questions/20712318/how-does-angulardart-dependency-injection-work) — Mogsdad, Dec 21 '17 at 00:52

score 0 · Accepted Answer · answered Dec 14 '15 at 17:14

0

When Logger is instantiated by DI (AngularDart) it will try to resolve all dependencies (constructor arguments, also transitive) and pass them to the constructor or throw otherwise.

answered Dec 14 '15 at 17:14

Günter Zöchbauer

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Thanks for the answer, do you know if the same would true for the current scope? If scope is used in some class which isn't a component or directive, would DI try to resolve that too? – Nodeocrat Dec 16 '15 at 10:49
Not sure what you mean by "current scope". I don't think there's are exceptions. If you request an instance from DI (or Angular does implicitly) it tries to resolve constructor arguments. Can you provide a concrete code example to demonstrate what you mean? – Günter Zöchbauer Dec 16 '15 at 15:28

How does Dependency injection work in AngularDart?

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