Function isTchar

http/unstable_structured_fields.ts:516–519

RFC 9110 tchar: token characters

(c: string)

/** RFC 9110 tchar: token characters */
function isTchar(c: string): boolean {
  const code = c.charCodeAt(0);
  return code < 128 && TCHAR_LOOKUP[code]!;
}

/** Check if at end of input */
function isEof(state: ParserState): boolean {