= Heading
hello

#let add(x, y) = x + y
Sum is #add(2, 3)

use typst::syntax::ast::AstNode;

fn typst_expr_to_xilem(value: &typst::eval::Value) -> syn::Expr {

fn typst_expr_to_xilem(value: &typst::eval::Value) -> Option<syn::Expr> {

        typst::eval::Value::Str(string) => syn::Expr::Lit(literal_string(string.as_str())),

        typst::eval::Value::Str(string) => Some(syn::Expr::Lit(literal_string(string.as_str()))),

            let supported_content = content::SupportedContent::downcast(content).unwrap();
            supported_content.to_xilem().unwrap()

            dbg!(content);
            let supported_content = content::SupportedContent::downcast(content)?;
            Some(supported_content.to_xilem()?)

        panic!();

        dbg!(root);
        todo!();

        // Remove any empty expressions (`None`)
        .filter_map(|expr| expr)

        if let Some(heading) = value.to::<HeadingElem>() {

        if value.is_empty() {
            None
        } else if let Some(heading) = value.to::<HeadingElem>() {

            None

            todo!()