Function parseDate

http/unstable_structured_fields.ts:1014–1030

(state: ParserState)

}

function parseDate(state: ParserState): BareItem {
  if (consume(state) !== "@") {
    throw new SyntaxError(
      `Invalid structured field: expected '@' at position ${state.pos - 1}`,
    );
  }

  const intItem = parseIntegerOrDecimal(state);
  if (intItem.type !== "integer") {
    throw new SyntaxError(
      "Invalid structured field: date must be an integer",
    );
  }

  const value = new Date(intItem.value * 1000);
  return { type: "date", value };
}

function parseDisplayString(state: ParserState): BareItem {
  if (consume(state) !== "%") {