type BooleanField = {
  label: string
  name: string
  type: 'boolean'
  list?: boolean
  // See https://tina.io/docs/extending-tina/overview/ for customizing the UI
  ui?: {
    label?: string
    description?: string
    component?: FC<any> | string | null
    parse?: (value: boolean | boolean[], name: string, field: F) => any
    format?: (value: boolean | boolean[], name: string, field: F) => any
    validate?(
      // boolean or  boolean[] depends on list true or false
      value: boolean | boolean[],
      allValues: any,
      meta: any,
      field: UIField<F, Shape>
    ): string | undefined | void
  }
}

{
  type: 'boolean',
  name: 'published',
  label: 'Published'
}