Function getNamedFormat

packages/intl/utils.ts:172–192

(
  formats: CustomFormats,
  type: T,
  name: string,
  onError: OnErrorFn
)

}

export function getNamedFormat<T extends keyof CustomFormats>(
  formats: CustomFormats,
  type: T,
  name: string,
  onError: OnErrorFn
):
  | NumberFormatOptions
  | Intl.DateTimeFormatOptions
  | Intl.RelativeTimeFormatOptions
  | undefined {
  const formatType = formats && formats[type]
  let format
  if (formatType) {
    format = formatType[name]
  }
  if (format) {
    return format
  }

  onError(new UnsupportedFormatterError(`No ${type} format named: ${name}`))
}