Your SPA doesn’t need extra state libs — createContext() can go a long way.
🎯 Use Context for:
• Theme toggles
• Language switching (i18n)
• Toast notifications
• Auth, cart, or any app-wide concern
🧠 Tips inside:
• Avoid re-renders with focused contexts
• Use useMemo to stabilize values
• Let providers manage logic — consumers stay clean
👉 2025-ready patterns with real examples:
https://javascript.plainenglish.io/global-state-without-extra-libraries-react-context-2025-e1222da53c19
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