(Vue3. 0 enterprise level project practice. Vue3. 0 combined with popular technology and typescript, the new version of vuex and Vue router are used to complete the complex practical project of front and rear end separation. A series of common component development from easy to difficult allows you to learn the development ideas and skills of a basic component library. Access the real backend API, bid farewell to mock data and provide swagger online debugging query. Master the development pain points of front-end and back-end separation - permission management, routing control, global store structure design, front-end cache implementation, etc.)