validateStartElement method

void validateStartElement(
  1. Node? startElement
)

Implementation

void validateStartElement(Node? startElement) {
  if (startElement == null) {
    throw Exception('$startElement: CFI target element is null');
  }

  if (startElement.nodeType != Node.ELEMENT_NODE) {
    throw Exception(
        '$startElement: CFI target element is not an HTML element');
  }
}