NestJS · Junior · Question 28 of 75

How do you register a plain value as a provider, e.g. a config object?

providers: [{ provide: "APP_CONFIG", useValue: { retries: 3 } }]

1With new Provider()
✓Correct answer: With useValue, then inject it with @Inject('APP_CONFIG')
3It's impossible; providers must be classes

Explanation

Custom providers also support useClass, useFactory and useExisting. Tokens can be strings, symbols or classes.

Further reading

NestJS: Custom providers ↗

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