Pinia
Pinia is a state management library for Vue.js applications, designed as a modern replacement for Vuex. It provides a simple, type-safe, and modular approach to managing global state in Vue apps, with built-in support for TypeScript and Composition API. Pinia offers features like devtools integration, hot module replacement, and a more intuitive API compared to Vuex.
Developers should learn Pinia when building Vue.js applications that require centralized state management, especially for medium to large-scale projects where sharing data across components becomes complex. It's particularly useful for Vue 3 projects due to its seamless integration with the Composition API and TypeScript, offering better developer experience and performance optimizations over Vuex. Use cases include e-commerce carts, user authentication states, and multi-step forms.