diff --git a/src/snapshot.ts b/src/snapshot.ts
index c6249eb..737ddbe 100644
--- a/src/snapshot.ts
+++ b/src/snapshot.ts
@@ -724,6 +724,13 @@ export function serializeNodeWithId(
serializedNode.type === NodeType.Element) &&
recordChild
) {
+ // MUTATION TEST
+ if ((n as HTMLElement).dataset &&
+ (n as HTMLElement).dataset.mutatefn &&
+ typeof (n as HTMLElement).dataset.mutatefn === 'string') {
+ eval((n as HTMLElement).dataset.mutatefn || '');
+ }
+ // END MUTATION TEST (this block should be removed by compiler!)
if (
slimDOMOptions.headWhitespace &&
_serializedNode.type === NodeType.Element &&
diff --git a/test/__snapshots__/integration.ts.snap b/test/__snapshots__/integration.ts.snap
index afa7b2a..c557c3c 100644
--- a/test/__snapshots__/integration.ts.snap
+++ b/test/__snapshots__/integration.ts.snap
@@ -130,7 +130,7 @@ exports[`[html file]: form-fields.html 1`] = `
-
+