react-query/packages/solid-query/src/__tests__/useMutationState.test-d.tsx

import { describe, expectTypeOf, it } from 'vitest'
import { useMutationState } from '../useMutationState'
import type { MutationState, MutationStatus } from '@tanstack/query-core'

describe('useMutationState', () => {
  it('should default to QueryState', () => {
    const result = useMutationState(() => ({
      filters: { status: 'pending' },
    }))

    expectTypeOf(result()).toEqualTypeOf<Array<MutationState>>()
  })
  it('should infer with select', () => {
    const result = useMutationState(() => ({
      filters: { status: 'pending' },
      select: (mutation) => mutation.state.status,
    }))

    expectTypeOf(result()).toEqualTypeOf<Array<MutationStatus>>()
  })
})