Add origin to start time to stop flaking long tasks from appearing at index 0 in the list

Author: k-fish

packages/nextjs/test/integration/test/client/tracingFetch.js

@@ -1,11 +1,15 @@
-const { expectRequestCount, isTransactionRequest, expectTransaction } = require('../utils/client');
+const {
+  expectRequestCount,
+  isTransactionRequest,
+  expectTransaction,
+  extractEnvelopeFromRequest,
+} = require('../utils/client');
 
 module.exports = async ({ page, url, requests }) => {
   await page.goto(`${url}/fetch`);
   await page.click('button');
   await page.waitForRequest(isTransactionRequest);
 
-  await expectRequestCount(requests, { transactions: 1 });
   expectTransaction(requests.transactions[0], {
     transaction: '/fetch',
     type: 'transaction',
@@ -22,4 +26,5 @@ module.exports = async ({ page, url, requests }) => {
       },
     ],
   });
+  await expectRequestCount(requests, { transactions: 1 });
 };

packages/tracing/src/browser/metrics/index.ts

@@ -49,7 +49,7 @@ export function startTrackingLongTasks(): void {
     if (!transaction) {
       return;
     }
-    const startTime = msToSec(entry.startTime);
+    const startTime = msToSec((browserPerformanceTimeOrigin as number) + entry.startTime);
     const duration = msToSec(entry.duration);
     transaction.startChild({
       description: 'Long Task',