Class: InjectionToken

Imported from @react-logic/di

Defined in: di/src/lib/injection-token.ts:33

An opaque, type-tagged identity used to register and resolve a dependency in the DI container.

Use an InjectionToken when the dependency has no class identity: configuration strings, primitive values, plain function callbacks, environment-specific objects, etc. For dependencies that are classes, the class itself doubles as the token — no InjectionToken is needed.

Each InjectionToken instance is unique by reference. The description is for debugging only — two tokens constructed with the same description are different tokens. Token identity is what makes provide/inject pairs match.

Example

export const API_URL = new InjectionToken<string>('API_URL');

// Provide a value for it…
<Injector provide={[{ provide: API_URL, useValue: 'https://api.test' }]}>
  <App />
</Injector>

// …then inject inside any logic class:
class ApiClient {
  url = inject(API_URL);
}

Type Parameters

T

T

The type that consumers receive when injecting this token. Phantom-only — the runtime value carries no T.

Constructors

Constructor

new InjectionToken<T>(description?): InjectionToken<T>

Defined in: di/src/lib/injection-token.ts:38

Parameters

description?

string = 'unnamed'

Returns

InjectionToken<T>

Properties

description

description: string = 'unnamed'

Defined in: di/src/lib/injection-token.ts:38

Methods

toString()

toString(): string

Defined in: di/src/lib/injection-token.ts:41

Returns

string