parse method not working for latex to html

[RohitKuwar]

I am referring Latex documentation for using it in my Vue application. In documentation below code snippet is given.

let latex = "\documentclass{article}
                  \begin{document}
                   Hello World.
                 \end{document}"

let generator = new HtmlGenerator({ hyphenate: false })

let doc = parse(latex, { generator: generator }).htmlDocument()

console.log(doc.documentElement.outerHTML)

It is not parsing above simple latex code to HTML document.