The original title is: "React useDebounce Hook: Debounce State & Callbacks (2026)"

Short summary

React's useDebounce and useDebounceFn hooks from @reactuses/core solve three common debouncing mistakes: memory leaks on unmount, stale variable captures in closures, and duplicated debounce logic across components. This tutorial covers both patterns with real code examples for search boxes and autosave, plus cancel/flush utilities to handle urgent user actions like posting or discarding drafts immediately.

• •useDebounce debounces state values; useDebounceFn debounces callback functions with arguments
• •Fixes memory leaks, stale closures, and re-implementation churn common in manual debounce approaches
• •Includes production patterns: search input, autosave with cancel/flush controls for user actions

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