writeExtensionHeader static method

void writeExtensionHeader(
  1. StringBuffer buffer, {
  2. required String name,
  3. required String on,
})

Implementation

static void writeExtensionHeader(
  StringBuffer buffer, {
  required String name,
  required String on,
}) {
  if (name.isEmpty) {
    throw Exception('Name must not be empty');
  }
  if (on.isEmpty) {
    throw Exception('On must not be empty');
  }

  buffer.write('extension $name on $on');
}