removed duplicate subtopic, replaced content, shifted nodes up (#7424)

src/data/roadmaps/react/content/usecallback@2zrN65JZhCyNimi33g78f.md

@@ -1,9 +0,0 @@
-# useCallback
-
-`useCallback` is a React hook that returns a memoized version of a callback function. It's used to optimize performance by preventing unnecessary re-renders. Specifically, it helps avoid recreating functions when their dependencies haven't changed, which can be useful when passing callbacks to child components that rely on referential equality to prevent re-rendering.
-
-Visit the following resources to learn more:
-
-- [@article@React Documentation on useCallback](https://react.dev/reference/react/useCallback)
-- [@article@useCallback Explained in Depth](https://kentcdodds.com/blog/usememo-and-usecallback)
-- [@article@useCallback Hook: An Introductory Guide](https://dmitripavlutin.com/dont-overuse-react-usecallback/)

src/data/roadmaps/react/content/usecallback@dgoDNDtW2_q9R9yhkXrcz.md

@@ -1,27 +1,9 @@
-# Common Hooks
+# useCallback
 
-React also has a lot of hooks that allow you to write more efficient React code.
+`useCallback` is a React hook that returns a memoized version of a callback function. It's used to optimize performance by preventing unnecessary re-renders. Specifically, it helps avoid recreating functions when their dependencies haven't changed, which can be useful when passing callbacks to child components that rely on referential equality to prevent re-rendering.
 
 Visit the following resources to learn more:
 
-- [@official@useCallback](https://react.dev/reference/react/useCallback)
+- [@article@React Documentation on useCallback](https://react.dev/reference/react/useCallback)
-- [@official@useContext](https://react.dev/reference/react/useContext)
+- [@article@useCallback Explained in Depth](https://kentcdodds.com/blog/usememo-and-usecallback)
-- [@official@useDebugValue](https://react.dev/reference/react/useDebugValue)
+- [@article@useCallback Hook: An Introductory Guide](https://dmitripavlutin.com/dont-overuse-react-usecallback/)
-- [@official@useDeferredValue](https://react.dev/reference/react/useDeferredValue)
-- [@official@useEffect](https://react.dev/reference/react/useEffect)
-- [@official@useId](https://react.dev/reference/react/useId)
-- [@official@useImperativeHandle](https://react.dev/reference/react/useImperativeHandle)
-- [@official@useInsertionEffect](https://react.dev/reference/react/useInsertionEffect)
-- [@official@useLayoutEffect](https://react.dev/reference/react/useLayoutEffect)
-- [@official@useReducer](https://react.dev/reference/react/useReducer)
-- [@official@useRef](https://react.dev/reference/react/useRef)
-- [@official@useState](https://react.dev/reference/react/useState)
-- [@official@useSyncExternalStore](https://react.dev/reference/react/useSyncExternalStore)
-- [@official@useTransition](https://react.dev/reference/react/useTransition)
-- [@article@useCallback Hook by Example](https://www.robinwieruch.de/react-usecallback-hook/)
-- [@article@useMemo Hook by Example](https://www.robinwieruch.de/react-usememo-hook/)
-- [@article@useContext Hook by Example](https://www.robinwieruch.de/react-usecontext-hook/)
-- [@article@useReducer Hook by Example](https://www.robinwieruch.de/react-usereducer-hook/)
-- [@article@useReducer vs useState Hook](https://www.robinwieruch.de/react-usereducer-vs-usestate/)
-- [@video@useDefferedValue Hook video](https://www.youtube.com/watch?v=jCGMedd6IWA)
-- [@feed@Explore top posts about React Hooks](https://app.daily.dev/tags/react-hooks?ref=roadmapsh)

src/data/roadmaps/react/react.json

@@ -136,14 +136,14 @@
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       "type": "section",
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+      "width": 247,
-      "height": 255,
+      "height": 168,
       "style": {
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+        "width": 247,
-        "height": 255
+        "height": 168
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@@ -153,7 +153,7 @@
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@@ -1199,7 +1199,7 @@
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@@ -1220,7 +1220,7 @@
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@@ -1329,7 +1329,7 @@
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@@ -1356,7 +1356,7 @@
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-        "y": 532.9443302389855
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@@ -1367,7 +1367,7 @@
       "type": "label",
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@@ -1387,7 +1387,7 @@
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@@ -1583,44 +1583,6 @@
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@@ -1663,7 +1625,7 @@
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@@ -1690,7 +1652,7 @@
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@@ -4499,4 +4461,4 @@
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+}