trimString function

IValidator trimString(
  1. IValidator child, {
  2. String? message,
})

String normalizer (no type pivot): trim leading/trailing whitespace.

Implementation

IValidator trimString(IValidator child, {String? message}) {
  final base = core.transform((v) => v is String ? v.trim() : v, child);
  return core.handleReturnPreserveValue(base, message);
}