Function resolveStrictStructuredField

http/unstable_message_signatures.ts:525–542

(
  headerValue: string,
  fieldName: string,
)

}

function resolveStrictStructuredField(
  headerValue: string,
  fieldName: string,
): string {
  // Try Dictionary, then List, then Item — the first successful parse wins
  try {
    return serializeDictionary(parseDictionary(headerValue));
  } catch { /* not a dictionary */ }
  try {
    return serializeList(parseList(headerValue));
  } catch { /* not a list */ }
  try {
    return serializeItem(parseItem(headerValue));
  } catch { /* not an item */ }
  throw new TypeError(
    `Cannot apply "sf" parameter to field "${fieldName}": unknown Structured Field type`,
  );
}

function resolveDictionaryMember(
  headerValue: string,