Why docs using new keyword instead of DI? | NestJS | Page 1

topaz monolith Jul 30, 2024, 10:02 AM

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Just came across the docs https://docs.nestjs.com/techniques/logger#using-the-logger-for-application-logging

private readonly logger = new Logger(MyService.name);

I wonder why it is using new instead of constructor injection in that case?

Documentation | NestJS - A progressive Node.js framework

Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming).

tulip saffron Jul 30, 2024, 12:21 PM

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this is because Logger isn't injectable

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but you can turn it into a provider like this: https://dev.to/micalevisk/nestjs-tip-how-to-inject-the-native-logger-as-any-other-provider-5caj

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NestJS tip: how to inject the native logger as any other provider

for NestJS v8, v9 and v10 Why? The Logger class from @nestjs/common is not a built-in...

topaz monolith Aug 1, 2024, 2:16 AM

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@tulip saffron ho I see, this requites a boilerplate.... however I've assume Loggier is injectable by default....

#Why docs using new keyword instead of DI?