import {createEvent, createStore} from 'effector'

​

const store = createStore(0)

const triggerA = createEvent()

const triggerB = createEvent()

​

store.on([triggerA, triggerB], (state, data) => state + data)

​

store.watch(value => {

  console.log(value)

})

// => 0

​

triggerA(2)

// => 2

​

triggerB(2)

// => 4