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Mar 16, 202611 min readreact-internalsReactInternals

useState vs useReducer in React: How They're Really Related

Understand the real difference between useState and useReducer in React, why useState is basically a special case of useReducer, and when each Hook is the better fit.

react react-hooks usestate usereducer react-state

Mar 16, 20268 min readreact-internalsReactInternals

Why Hooks Can’t Be Used in Conditions, Loops, or Nested Functions

React Hooks rely on call order, not variable names. Learn how Fiber stores hooks in a linked list and why changing the call order breaks state alignment.

react react-hooks rules-of-hooks react-fiber hooks-call-order