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Vue Academy · Lesson

State Machines with XState in Vue

useMachine() with XState v5, defining states and transitions, visualizing machine in devtools.

Why State Machines?

Boolean flags like isLoading, isError, isSuccess can drift into impossible combinations. A state machine models a finite set of states and the allowed transitions between them, making invalid states unrepresentable.

Introducing XState

XState is a library for finite state machines and statecharts in JavaScript. The @xstate/vue package integrates it with Vue’s reactivity via a composable.

// terminal
// npm install xstate @xstate/vue

All lessons in this course

  1. Advanced Reactivity: shallowRef and triggerRef
  2. Composable Factories and Parameterized Composables
  3. State Machines with XState in Vue
  4. effectScope for Grouped Effects
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