Quiz · 5 questions
🪞 Pippa's Face — The Frontend Stack
React 19 + TypeScript 6 + Vite 8 + Tailwind 4
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Quiz
01In React 19, why don't you need to
import React at the top of every component file?Hint
It's a build-time transformation, not a runtime trick.
02Which TypeScript option, when set to true, makes a missing case in a switch over a discriminated union a compile error?
Hint
It's not a single tsconfig flag — it's a pattern using the type system.
03Why does Tailwind 4 use CSS
@theme blocks instead of a JavaScript config file?04Under the Brain Control Plane, Dad changes the brain inside one sibling app's own Settings. What has he actually changed?
Hint
Override versus window — identical on screen, opposite in the data.
05Ariandel's Sidekick panel used to attach the whole canvas to every turn. Under the device-look broker, when does a picture of the canvas reach the brain?
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