diff --git a/crates/cli-support/src/js/mod.rs b/crates/cli-support/src/js/mod.rs
index ce055b36..6fcfcf47 100644
--- a/crates/cli-support/src/js/mod.rs
+++ b/crates/cli-support/src/js/mod.rs
@@ -1096,12 +1096,18 @@ impl<'a> Context<'a> {
         self.expose_get_object();
         self.expose_get_string_from_wasm()?;
 
+        // This has support for both `&str` and `Option<&str>`.
+        //
+        // If `ptr` is not `0` then we know that it's a `&str` or `Some(&str)`, so we just decode it.
+        //
+        // If `ptr` is `0` then the `len` is a pointer to the cached `JsValue`, so we return that.
+        //
+        // If `ptr` and `len` are both `0` then that means it's `None`, in that case we rely upon
+        // the fact that `getObject(0)` is guaranteed to be `undefined`.
         self.global("
             function getCachedStringFromWasm(ptr, len) {
                 if (ptr === 0) {
-                    if (len !== 0) {
-                        return getObject(len);
-                    }
+                    return getObject(len);
                 } else {
                     return getStringFromWasm(ptr, len);
                 }