is

Namespace for unit validators

is.store(value)

Checks if given value is store

Returns

boolean

import {

is,

createStore,

createEvent,

createEffect,

createDomain,

} from 'effector'

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

is.store(store)

// => true

is.store(event)

// => false

is.store(fx)

// => false

is.store(createDomain())

// => false

is.store(fx.pending)

// => true

is.store(fx.done)

// => false

is.store(store.updates)

// => false

is.store(null)

// => false

Try it

is.event(value)

Checks if given value is event

Returns

boolean

import {

is,

createStore,

createEvent,

createEffect,

createDomain,

} from 'effector'

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

is.event(store)

// => false

is.event(event)

// => true

is.event(fx)

// => false

is.event(createDomain())

// => false

is.event(fx.pending)

// => false

is.event(fx.done)

// => true

is.event(store.updates)

// => true

is.event(null)

// => false

Try it

is.effect(value)

Checks if given value is effect

Returns

boolean

import {

is,

createStore,

createEvent,

createEffect,

createDomain,

} from 'effector'

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

is.effect(store)

// => false

is.effect(event)

// => false

is.effect(fx)

// => true

is.effect(createDomain())

// => false

is.effect(null)

// => false

Try it

is.domain(value)

Checks if given value is domain

Returns

boolean

import {

is,

createStore,

createEvent,

createEffect,

createDomain,

} from 'effector'

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

is.domain(store)

// => false

is.domain(event)

// => false

is.domain(fx)

// => false

is.domain(createDomain())

// => true

is.domain(null)

// => false

Try it

is.unit(value)

Checks if given value is event, store, effect or domain

Returns

boolean

import {

is,

createStore,

createEvent,

createEffect,

createDomain,

} from 'effector'

const store = createStore(null)

const event = createEvent()

const fx = createEffect()

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

Try it