React interview questions

Implement an accessible single-open accordion from context-powered compound components with linked triggers and panels.

Implement one input component that correctly supports both controlled and uncontrolled state without leaking its reserved props.

Build a keyed promise cache and render wrapper that integrates asynchronous data with React Suspense.

Build a tiny Zustand-style store whose initializer defines state and actions, with an attached vanilla API and React selector hook.

Implement a reusable React error boundary with fallback rendering, error reporting, manual reset, and reset-key recovery.

Implement a React Portal that owns a body host or borrows a caller-provided container with safe cleanup.

Implement a context-backed React theme provider with stable controls, functional updates, nesting, and a strict consumer hook.

Implement a render-props toggle component that exposes reusable state and stable controls while leaving all markup to its child function.

Implement a higher-order component that selects loading UI, forwards ordinary props and refs, and exposes a useful display name.