is this still work?

[SeungyeopShin]

I tested this package with examples,
But an error occured as below.

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'lexer')
    at markdownToBlocks (index.ts:27:1)

export async function markdownToBlocks(
  body: string,
  options: ParsingOptions = {}
): Promise<KnownBlock[]> {
  const tokens = marked.lexer(body); // error line

  return parseBlocks(tokens, options);
}