close #501 do not count attach iframe event in checkout

src/record/index.ts

@@ -157,6 +157,14 @@ function record<T = eventWithTime>(
       lastFullSnapshotEvent = e;
       incrementalSnapshotCount = 0;
     } else if (e.type === EventType.IncrementalSnapshot) {
+      // attch iframe should be considered as full snapshot
+      if (
+        e.data.source === IncrementalSource.Mutation &&
+        e.data.isAttachIframe
+      ) {
+        return;
+      }
+
       incrementalSnapshotCount++;
       const exceedCount =
         checkoutEveryNth && incrementalSnapshotCount >= checkoutEveryNth;