diff --git a/app-proto/src/components/add_remove.rs b/app-proto/src/components/add_remove.rs
index a685482..ef5851c 100644
--- a/app-proto/src/components/add_remove.rs
+++ b/app-proto/src/components/add_remove.rs
@@ -18,16 +18,6 @@ pub fn AddRemove() -> View {
                         // this call is batched to avoid redundant realizations.
                         // it updates the element list and the regulator list,
                         // which are both tracked by the realization effect
-                        /* TO DO */
-                        // it would make more to do the batching inside
-                        // `insert_element_default`, but that will have to wait
-                        // until Sycamore handles nested batches correctly.
-                        //
-                        //   https://github.com/sycamore-rs/sycamore/issues/802
-                        //
-                        // the nested batch issue is relevant here because the
-                        // assembly loaders in the test assembly chooser use
-                        // `insert_element_default` within larger batches
                         state.assembly.insert_element_default::<Sphere>();
                     });
                 }
diff --git a/app-proto/src/engine.rs b/app-proto/src/engine.rs
index 8b5d982..9f4c688 100644
--- a/app-proto/src/engine.rs
+++ b/app-proto/src/engine.rs
@@ -1,10 +1,7 @@
 use lazy_static::lazy_static;
 use nalgebra::{Const, DMatrix, DVector, DVectorView, Dyn, SymmetricEigen};
 use std::fmt::{Display, Error, Formatter};
-
-/* DEBUG */
-#[cfg(not(feature = "dev"))]
-use sycamore::prelude::console_log;
+use web_sys::{console, wasm_bindgen::JsValue}; /* DEBUG */
 
 // --- elements ---
 
@@ -170,8 +167,10 @@ impl ConfigSubspace {
         
         /* DEBUG */
         // print the eigenvalues
-        #[cfg(not(feature = "dev"))]
-        console_log!("Eigenvalues used to find kernel:{}", eig.eigenvalues);
+        #[cfg(all(target_family = "wasm", target_os = "unknown"))]
+        console::log_1(&JsValue::from(
+            format!("Eigenvalues used to find kernel:{}", eig.eigenvalues)
+        ));
         
         // express the basis in the standard coordinates
         let basis_std = proj_to_std * &basis_proj;