Hide the wasm module.

src/util/elisp/util.rs

@@ -29,6 +29,7 @@ pub(crate) struct EmacsStandardProperties {
     pub(crate) post_blank: Option<usize>,
 }
 
+#[cfg(feature = "compare")]
 pub(crate) fn get_emacs_standard_properties(
     emacs: &Token<'_>,
 ) -> Result<EmacsStandardProperties, Box<dyn std::error::Error>> {