What’s new in Vuex 4

The text discusses the complexity of state management in frontend applications, particularly focusing on Vuex, a state management library for Vue.js applications. Vuex, which is inspired by the Flux architecture, differs from Redux by allowing specific mutation rules that are more intuitive and less verbose. The article highlights the new features in Vuex version 4.0.0-beta, which include support for Vue 3's Composition API and enhanced TypeScript integration, allowing developers to create fully typed stores. It emphasizes that the latest version introduces breaking changes, such as removing global typings for this.$store within Vue components, requiring developers to provide their own augment declarations. The text also outlines the use of mutations, actions, and getters within Vuex, showing how they can be statically typed, and discusses the importance of these features for static analysis and self-documenting code. Despite being in beta, Vuex 4 promises exciting changes, such as the removal of mapXXX and the integration of the createLogger function into the core package. The document concludes by recommending tools like LogRocket for debugging Vue applications, which can replay user sessions and monitor Vue mutations and actions.