Question 1

How to use angular2-jwt with standalone components in Angular?

Accepted Answer

For standalone apps, use importProvidersFrom to include JwtModule in bootstrapApplication and call provideHttpClient with withInterceptorsFromDi, as shown in the README's standalone configuration example. This ensures the interceptor integrates properly with Angular's new bootstrap method.

Question 2

Does angular2-jwt handle token expiration or automatic refresh?

Accepted Answer

No, angular2-jwt only attaches existing tokens and does not manage expiration or refresh. You need to implement separate logic, such as checking response status codes and renewing tokens, to handle token lifecycle events.

Question 3

Angular2-jwt vs building a custom interceptor, which should I choose?

Accepted Answer

Angular2-jwt saves development time with a pre-tested solution for token attachment and domain control, but a custom interceptor offers more flexibility for complex auth scenarios like multi-token systems. Choose based on your need for simplicity versus customization.

Question 4

How to exclude public routes from JWT attachment in angular2-jwt?

Accepted Answer

Add the URLs to the disallowedRoutes array in the JwtModule configuration, which prevents the interceptor from sending tokens to those endpoints, useful for public APIs or authentication endpoints themselves.

Question 5

Can angular2-jwt work with tokens stored in cookies instead of localStorage?

Accepted Answer

Yes, implement a tokenGetter function that accesses cookies, as the library is agnostic to the token source. This allows integration with server-side auth setups that use HTTP-only cookies for security.

Question 6

What if my JWT is invalid or missing when using angular2-jwt?

Accepted Answer

If tokenGetter returns null or an invalid token, the interceptor skips adding the Authorization header, but error handling for unauthorized responses must be implemented separately in your application logic or with additional interceptors.

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