Function createCustomMessage

packages/validation/src/validation.ts:482–496

* Returns a custom validation message if applicable. * @param node - FormKit Node * @param validation - The validation rule being processed.

(
  node: FormKitNode,
  validation: FormKitValidation,
  i18nArgs: FormKitValidationI18NArgs
)

 * @param validation - The validation rule being processed.
 */
function createCustomMessage(
  node: FormKitNode,
  validation: FormKitValidation,
  i18nArgs: FormKitValidationI18NArgs
): string | undefined {
  const customMessage =
    node.props.validationMessages &&
    has(node.props.validationMessages, validation.name)
      ? node.props.validationMessages[validation.name]
      : undefined
  if (typeof customMessage === 'function') {
    return customMessage(...i18nArgs)
  }
  return customMessage
}

/**
 * Creates the arguments passed to the i18n