The Knights Who Say “Ni!” (Preview)
“We are the Knights Who Say ‘Ni!’” announces the tallest Knight. “And we demand… a resolved Promise!”
The developer shifts uncomfortably. “I… I can’t resolve it right now. It’s still pending.”
“THEN YOU MUST AWAIT!”
“I am awaiting! But the network—”
“NI!”
The developer wraps the call in try/catch. The Promise rejects. The Knights flinch.
“NI! NI! NI! An unhandled rejection!”
“It’s handled,” the developer says, showing the catch block. “See? (catch e (Err e:message)). The rejection is wrapped in a Result. The caller uses match.”
The Knights examine the error handling. The rejected Promise has been converted to an (Err ...). The caller’s match covers both Ok and Err. No unhandled rejections. No silent failures.
“Bring us… ANOTHER Promise!” says the head Knight. “One that resolves with a shrubbery!”
The developer sighs and adds another await.