Function parseKey

http/unstable_structured_fields.ts:1097–1111

(state: ParserState)

}

function parseKey(state: ParserState): string {
  if (!isKeyStart(peek(state))) {
    throw new SyntaxError(
      `Invalid structured field: invalid key start at position ${state.pos}`,
    );
  }

  const startPos = state.pos;
  state.pos++; // Skip validated first char
  while (!isEof(state) && isKeyChar(peek(state))) {
    state.pos++;
  }

  return state.input.slice(startPos, state.pos);
}

function parseParameters(state: ParserState): Parameters {
  const parameters: Map<string, BareItem> = new Map();