Vue3 Development Pitfalls: Mastering Reactivity and Composition API

Vue3's reactivity system and Composition API are powerful but prone to misuse—incorrect handling of ref, reactive, and lifecycle hooks causes subtle reactivity losses and bugs. Understanding watch vs watchEffect behavior, ref unwrapping edge cases, and composition function contracts is essential for professional Vue3 development. This comprehensive guide identifies and resolves the pitfalls that trip up even experienced developers.