How React Works · Part 098 min read
Hooks: Why Order Matters
Hooks have no names or keys; React stores them as an ordered list on each component's fiber and matches them by call position, which is the whole reason the Rules of Hooks exist.
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- React Internals · Part 1012 min read
Hooks on Mount
A function component's first render runs inside renderWithHooks. It points the global hooks dispatcher (ReactSharedInternals.H) at the mount implementations, then calls your…
- React Internals · Part 1110 min read
Hooks on Update
On a re-render, renderWithHooks installs HooksDispatcherOnUpdate. Each hook call then clones the matching node from the committed (current) fiber's hook list onto the…