Use it as -FIRDebugEnabled or -FIRDebugDisabled without the [x] or [] in between.

Finally, I was able to get DebugView working! I had set FIRDebugEnabled in Edit Scheme, but just like you said, changing it to -FIRDebugEnabled did the trick. (The [x] was meant to show it was checked.)
I never realized I needed the hyphen, so this was a huge help—thank you so much! You’re the best!

Thanks for the reply! I tried the same approach—adding the launch arguments like this:
- [x] FIRDebugEnabled
- [ ] FIRDebugDisabled
—but it just won’t work. Everything I find online seems out of date, so I was hoping to hear from anyone who has it set up correctly right now.

> And let’s not forget flexibility. Want to experiment with a new framework? Go for it—one micro-frontend can be Vue, another Svelte, and the rest whatever your team’s comfy with. No more "all-in" framework bets.

sounds good.