Interface ClassProvider

Configures the Injector to return an instance of useClass for a token.

See

"Dependency Injection Guide".

Usage Notes

{@example core/di/ts/provider_spec.ts region='ClassProvider'}

Note that following two providers are not equal:

{@example core/di/ts/provider_spec.ts region='ClassProviderDifference'}

Multi-value example

{@example core/di/ts/provider_spec.ts region='MultiProviderAspect'}

Public Api

Hierarchy

Properties

Properties

multi?: boolean

When true, injector returns an array of instances. This is useful to allow multiple providers spread across many files to provide configuration information to a common token.

provide: any

An injection token. (Typically an instance of Type or InjectionToken, but can be any).

useClass: Type<any>

Class to instantiate for the token.

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