Package Exports
- @n8n/di
- @n8n/di/dist/di.js
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@n8n/di) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
@n8n/di
@n8n/di is a dependency injection (DI) container library, based on typedi.
n8n no longer uses typedi because:
typediis no longer officially maintained- Need for future-proofing, e.g. stage-3 decorators
- Small enough that it is worth the maintenance burden
- Easier to customize, e.g. to simplify unit tests
Usage
// from https://github.com/typestack/typedi/blob/develop/README.md
import { Container, Service } from 'typedi';
@Service()
class ExampleInjectedService {
printMessage() {
console.log('I am alive!');
}
}
@Service()
class ExampleService {
constructor(
// because we annotated ExampleInjectedService with the @Service()
// decorator TypeDI will automatically inject an instance of
// ExampleInjectedService here when the ExampleService class is requested
// from TypeDI.
public injectedService: ExampleInjectedService
) {}
}
const serviceInstance = Container.get(ExampleService);
// we request an instance of ExampleService from TypeDI
serviceInstance.injectedService.printMessage();
// logs "I am alive!" to the consoleRequires enabling these flags in tsconfig.json:
{
"compilerOptions": {
"experimentalDecorators": true,
"emitDecoratorMetadata": true
}
}