Angular · Middle · Question 26 of 75

How do you inject a dependency that might not be provided?

✓Correct answer: inject(Analytics, { optional: true }), which returns null instead of throwing
2inject(Analytics) ?? null, which never throws
3Wrap inject in try/catch in the template

Explanation

Without optional, Angular throws NullInjectorError when no provider is found. Other options include self, skipSelf and host, which limit where the resolution looks.

How do you inject a dependency that might not be provided?

Explanation

Further reading

Problem with a question

Test yourself