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@angular/core

Service

decorator

Decorator that marks a class as a service and makes it automatically available in the dependency injection system.

Introduction to Services and DICreating and using servicesDefining dependency providers

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    @Service();
@Service(options: { autoProvided: false });
@Service(options: { autoProvided?: true; factory: () => T });
@Service(options?: { autoProvided?: true });
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