diff --git a/frontend/www/bootstrap.js b/frontend/www/bootstrap.js
index 7934d62..46e0b6a 100644
--- a/frontend/www/bootstrap.js
+++ b/frontend/www/bootstrap.js
@@ -1,5 +1,6 @@
// A dependency graph that contains any wasm must all be imported
// asynchronously. This `bootstrap.js` file does the single async import, so
// that no one else needs to worry about it again.
+// Import index.js that executes index.ts
import("./index.js")
.catch(e => console.error("Error importing `index.js`:", e));
diff --git a/frontend/www/index.html b/frontend/www/index.html
index ca5615c..fef4ea8 100644
--- a/frontend/www/index.html
+++ b/frontend/www/index.html
@@ -5,6 +5,8 @@