# @xstate/fsm

_{XState for Finite State Machines}

This package contains a minimal, 1kb implementation of [XState](https://github.com/statelyai/xstate) for **finite state machines**. - [Read the full documentation in the XState docs](https://xstate.js.org/docs/packages/xstate-fsm/). - [Read our contribution guidelines](https://github.com/statelyai/xstate/blob/main/CONTRIBUTING.md). ## Features | | **@xstate/fsm** | [XState](https://github.com/statelyai/xstate) | | --------------------------- | :-------------: | :-------------------------------------------: | | Finite states | ✅ | ✅ | | Initial state | ✅ | ✅ | | Transitions (object) | ✅ | ✅ | | Transitions (string target) | ✅ | ✅ | | Delayed transitions | ❌ | ✅ | | Eventless transitions | ❌ | ✅ | | Wildcard transitions | ✅ | ✅ | | Nested states | ❌ | ✅ | | Parallel states | ❌ | ✅ | | History states | ❌ | ✅ | | Final states | ❌ | ✅ | | Context | ✅ | ✅ | | Entry actions | ✅ | ✅ | | Exit actions | ✅ | ✅ | | Transition actions | ✅ | ✅ | | Parameterized actions | ❌ | ✅ | | Transition guards | ✅ | ✅ | | Parameterized guards | ❌ | ✅ | | Spawned actors | ❌ | ✅ | | Invoked actors | ❌ | ✅ | - Finite states (non-nested) - Initial state - Transitions (object or strings) - Context - Entry actions - Exit actions - Transition actions - `state.changed` If you want to use statechart features such as nested states, parallel states, history states, activities, invoked services, delayed transitions, transient transitions, etc. please use [`XState`](https://github.com/statelyai/xstate). ## Quick start ### Installation ```bash npm i @xstate/fsm ``` ### Usage (machine) ```js import { createMachine } from '@xstate/fsm'; const toggleMachine = createMachine({ id: 'toggle', initial: 'inactive', states: { inactive: { on: { TOGGLE: 'active' } }, active: { on: { TOGGLE: 'inactive' } } } }); const { initialState } = toggleMachine; const toggledState = toggleMachine.transition(initialState, 'TOGGLE'); toggledState.value; const untoggledState = toggleMachine.transition(toggledState, 'TOGGLE'); untoggledState.value; // => 'inactive' ``` ### Usage (service) ```js import { createMachine, interpret } from '@xstate/fsm'; const toggleMachine = createMachine({}); const toggleService = interpret(toggleMachine).start(); toggleService.subscribe((state) => { console.log(state.value); }); toggleService.send('TOGGLE'); toggleService.send('TOGGLE'); toggleService.stop(); ```

패키지	다운로드	Stars	크기	Issues	발행일	라이선스

@xstate/fsm	1,364,573	28,558	57.1 kB	164	2年前	MIT