import {createStore, createEvent, sample} from 'effector'

const trigger = createEvent()

​

const a = createStore('A')

const b = createStore(1)

​

// Target has type `Event<{ a: string, b: number }>`

const target = sample({

  source: {a, b},

  clock: trigger,

})

​

target.watch(obj => {

  console.log('sampled object', obj)

  // => {a: 'A', b: 1}

})

​

trigger()