Angular · Dependency Injection · Junior · Debugging
What is an injection context and why does inject() fail outside it?
Short Interview Answer
inject() must run during construction/DI setup (or runInInjectionContext), not in arbitrary async callbacks.
Detailed Explanation
Call inject() in field initializers, constructors, or factories. Capturing Injector and running later is the escape hatch. This trips people migrating from constructor DI.