fix: account for negative timestamps from rrweb

plugin-server/src/worker/ingestion/process-event.ts

@@ -406,7 +406,10 @@ export const createSessionReplayEvent = (
 ) => {
     const timestamps = events
         .filter((e) => !!e?.timestamp)
-        .map((e) => castTimestampOrNow(DateTime.fromMillis(e.timestamp), TimestampFormat.ClickHouse))
+        .filter((e) => Math.sign(e.timestamp) === 1)
+        .map((e) => DateTime.fromMillis(e.timestamp))
+        .filter((e) => e.isValid)
+        .map((e) => castTimestampOrNow(e, TimestampFormat.ClickHouse))
         .sort()
 
     // but every event where chunk index = 0 must have an eventsSummary

plugin-server/tests/main/process-event.test.ts

@@ -1404,6 +1404,31 @@ const sessionReplayEventTestCases: {
             message_count: 1,
         },
     },
+    {
+        snapshotData: {
+            events_summary: [
+                // a negative timestamp is ignored
+                { timestamp: 1682449093000, type: 3, data: { source: 2 }, windowId: '1' },
+                { timestamp: 1682449095000, type: 3, data: { source: 2 }, windowId: '1' },
+                { timestamp: -922167545571, type: 3, data: { source: 2 }, windowId: '1' },
+            ],
+        },
+        expected: {
+            click_count: 3,
+            keypress_count: 0,
+            mouse_activity_count: 3,
+            first_url: null,
+            first_timestamp: '2023-04-25 18:58:13.000',
+            last_timestamp: '2023-04-25 18:58:15.000',
+            active_milliseconds: 1,
+            console_log_count: 0,
+            console_warn_count: 0,
+            console_error_count: 0,
+            size: 217,
+            event_count: 3,
+            message_count: 1,
+        },
+    },
     {
         snapshotData: {
             events_summary: [