Function preprocess

packages/lang-core/src/parser/parser.ts:395–397

Clean LLM response: strip fences, comments, whitespace.

(input: string)

/** Clean LLM response: strip fences, comments, whitespace. */
function preprocess(input: string): string {
  return stripComments(stripFences(input.trim())).trim();
}

/**
 * Parse a complete openui-lang string in one pass.