import {

  is,

  createStore,

  createEvent,

  createEffect,

  createDomain,

  fork,

} from 'effector'

​

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

const scope = fork()

​

is.unit(scope)

// => true

​

is.unit(store)

// => true

​

is.unit(event)

// => true

​

is.unit(fx)

// => true

​

is.unit(createDomain())

// => true

​

is.unit(fx.pending)

// => true

​

is.unit(fx.done)

// => true

​

is.unit(store.updates)

// => true

​

is.unit(null)

// => false