close #501 do not count attach iframe event in checkout

src/record/iframe-manager.ts

@@ -30,6 +30,7 @@ export class IframeManager {
       removes: [],
       texts: [],
       attributes: [],
+      isAttachIframe: true,
     });
     this.loadListener?.((iframeEl as unknown) as HTMLIFrameElement);
   }

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;