Skip to Content
Guides@InjectSelf

@InjectSelf

The @InjectSelf() decorator injects the current Injector instance itself into a class.

When to Use

  • Dynamically resolve dependencies at runtime
  • Create child injectors for scoped contexts
  • Implement factory patterns

Basic Usage

import { Injector, InjectSelf } from "@anthropic/redi";
 
class ServiceFactory {
  constructor(@InjectSelf() private injector: Injector) {}
 
  createService<T>(id: DependencyIdentifier<T>): T {
    return this.injector.createInstance(id);
  }
 
  createScope(deps: Dependency[]): Injector {
    return this.injector.createChild(deps);
  }
}

Examples

Dynamic Resolution

class PluginManager {
  constructor(@InjectSelf() private injector: Injector) {}
 
  loadPlugin(pluginId: DependencyIdentifier<Plugin>): Plugin {
    return this.injector.get(pluginId);
  }
}

Creating Scoped Injectors

class RequestHandler {
  constructor(@InjectSelf() private injector: Injector) {}
 
  handleRequest(requestData: any) {
    const scope = this.injector.createChild([
      [IRequestData, { useValue: requestData }],
    ]);
    return scope.get(IRequestProcessor).process();
  }
}
Last updated on
@WithNewforwardRef