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𝗥𝗲𝗮𝗰𝘁 𝟭𝟵.𝟮 𝗷𝘂𝘀𝘁 𝗱𝗿𝗼𝗽𝗽𝗲𝗱 𝗮𝗻𝗱 𝗵𝗼𝗻𝗲𝘀𝘁𝗹𝘆? 𝗧𝗵𝗶𝘀 𝗺𝗶𝗴𝗵𝘁 𝗯𝗲 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝗲𝘅𝗰𝗶𝘁𝗶𝗻𝗴 𝗿𝗲𝗹𝗲𝗮𝘀𝗲 𝘁𝗵𝗶𝘀 𝘆𝗲𝗮𝗿. 🔥 The React team cooked up some features that solve problems we've ALL been dealing with. Let me break it down for you 🧵👇 𝗙𝗶𝗿𝘀𝘁 𝘂𝗽: 𝗧𝗵𝗲 <𝗔𝗰𝘁𝗶𝘃𝗶𝘁𝘆 /> 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁. Remember spending hours optimizing conditional rendering? Or losing state when users navigate away? This changes everything. You can now pre-render hidden UI without killing performance. Back button? Instant. No more loading spinners. 🚀 𝗧𝗵𝗶𝗻𝗸 𝗮𝗯𝗼𝘂𝘁 𝗶𝘁: - Pre-load the next page while users read - Keep tab state alive when switching - Smooth transitions without re-mounting It's like having your cake and eating it too. Performance AND better UX. Finally. 🎂 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁𝗘𝘃𝗲𝗻𝘁 Okay, be honest. How many times have you: - Added a function to useEffect deps - Effect runs on every render - Spent 2 hours debugging - Added eslint-disable 😅 We've ALL been there. This hook fixes it. 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁𝗘𝘃𝗲𝗻𝘁 lets you separate the "reactive" stuff from the "event" stuff in your effects. It always sees the latest props/state but doesn't trigger re-runs. No more dependency hell. No more fighting the linter. Just clean, working code. 🙏 𝗧𝗵𝗲 𝗖𝗵𝗿𝗼𝗺𝗲 𝗗𝗲𝘃𝗧𝗼𝗼𝗹𝘀 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 You can now see EXACTLY what React is doing: - Which components are rendering - What priority level - Why it's blocked - When transitions happen Debugging just got 10x easier. 𝗡𝗼𝘁𝗲: Some of these features are experimental. 𝗧𝗵𝗮𝘁'𝘀 𝗶𝘁! Hope this thread helped break down React 19.2. If you found this useful: ♻️ Retweet the first tweet 💾 Bookmark for later 👥 Follow for more dev content #dev #react #NewFeature #Learning #WebDev #Programming