Minimalist finite-state machine
import FSM from 'min-fsm'
const fsm = new FSM({
initial: 'idle',
states: {
idle: {
enter: () =>'idle',
update: ()=>console.log('idling'),
exit: () => console.log('un-idle'),
on: {
start: 'running',
},
},
running: {
enter: () =>'run',
// update: ()=>console.log('running'),
exit: () => console.log('un-run'),
on: {
stop: 'idle',
pause: 'paused',
},
},
paused: {
enter: () =>'pause',
update: ()=>console.log('paused'),
exit: () => console.log('un-pause'),
on: {
resume: 'running',
stop: 'idle',
},
},
},
})
// start in the `idle` state
fsm.act('start')
// transition to the `running` state
fsm.act('stop')
// transition to the `idle` state
...Reserved properties on the config object:
initial - The initial state's name
states - An object whose properties are the state objects
Reservered properties on each state object:
enter - Function to be called when entering the state
exit - Function to be called when exiting the state
on - an object whose propertys' values are the possible transitions from the enclosing state