type StringField = {
  label: string
  name: string
  type: 'string'
  list?: boolean
  options?: (string | { value: string; label: string })[]
  /** Represents the "body" of a markdown file **/
  isBody?: 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: string | string[], name: string, field: F) => any
    format?: (value: string | string[], name: string, field: F) => any
    // Note: defaultItem can only can be used when {list: true}
    defaultItem?: () => string | string
    validate?(
      // string or string[] depends on list true or false
      value: string | string[],
      allValues: any,
      meta: any,
      field: UIField<F, Shape>
    ): string | undefined | void
  }
}