fix(browser): Remove browserPerformanceTimeOrigin side-effects

packages/browser-utils/src/metrics/browserMetrics.ts

@@ -83,7 +83,7 @@ interface StartTrackingWebVitalsOptions {
  */
 export function startTrackingWebVitals({ recordClsStandaloneSpans }: StartTrackingWebVitalsOptions): () => void {
   const performance = getBrowserPerformanceAPI();
-  if (performance && browserPerformanceTimeOrigin) {
+  if (performance && browserPerformanceTimeOrigin()) {
     // @ts-expect-error we want to make sure all of these are available, even if TS is sure they are
     if (performance.mark) {
       WINDOW.performance.mark('sentry-tracing-init');
@@ -117,7 +117,7 @@ export function startTrackingLongTasks(): void {
     const { op: parentOp, start_timestamp: parentStartTimestamp } = spanToJSON(parent);
 
     for (const entry of entries) {
-      const startTime = msToSec((browserPerformanceTimeOrigin as number) + entry.startTime);
+      const startTime = msToSec((browserPerformanceTimeOrigin() as number) + entry.startTime);
       const duration = msToSec(entry.duration);
 
       if (parentOp === 'navigation' && parentStartTimestamp && startTime < parentStartTimestamp) {
@@ -156,7 +156,7 @@ export function startTrackingLongAnimationFrames(): void {
         continue;
       }
 
-      const startTime = msToSec((browserPerformanceTimeOrigin as number) + entry.startTime);
+      const startTime = msToSec((browserPerformanceTimeOrigin() as number) + entry.startTime);
 
       const { start_timestamp: parentStartTimestamp, op: parentOp } = spanToJSON(parent);
 
@@ -167,7 +167,6 @@ export function startTrackingLongAnimationFrames(): void {
         // routing instrumentations
         continue;
       }
-
       const duration = msToSec(entry.duration);
 
       const attributes: SpanAttributes = {
@@ -210,7 +209,7 @@ export function startTrackingInteractions(): void {
     }
     for (const entry of entries) {
       if (entry.name === 'click') {
-        const startTime = msToSec((browserPerformanceTimeOrigin as number) + entry.startTime);
+        const startTime = msToSec((browserPerformanceTimeOrigin() as number) + entry.startTime);
         const duration = msToSec(entry.duration);
 
         const spanOptions: StartSpanOptions & Required<Pick<StartSpanOptions, 'attributes'>> = {
@@ -271,7 +270,7 @@ function _trackFID(): () => void {
       return;
     }
 
-    const timeOrigin = msToSec(browserPerformanceTimeOrigin as number);
+    const timeOrigin = msToSec(browserPerformanceTimeOrigin() as number);
     const startTime = msToSec(entry.startTime);
     _measurements['fid'] = { value: metric.value, unit: 'millisecond' };
     _measurements['mark.fid'] = { value: timeOrigin + startTime, unit: 'second' };
@@ -300,12 +299,13 @@ interface AddPerformanceEntriesOptions {
 /** Add performance related spans to a transaction */
 export function addPerformanceEntries(span: Span, options: AddPerformanceEntriesOptions): void {
   const performance = getBrowserPerformanceAPI();
-  if (!performance?.getEntries || !browserPerformanceTimeOrigin) {
+  const origin = browserPerformanceTimeOrigin();
+  if (!performance?.getEntries || !origin) {
     // Gatekeeper if performance API not available
     return;
   }
 
-  const timeOrigin = msToSec(browserPerformanceTimeOrigin);
+  const timeOrigin = msToSec(origin);
 
   const performanceEntries = performance.getEntries();
 

packages/browser-utils/src/metrics/cls.ts

@@ -90,7 +90,7 @@ export function trackClsAsStandaloneSpan(): void {
 function sendStandaloneClsSpan(clsValue: number, entry: LayoutShift | undefined, pageloadSpanId: string) {
   DEBUG_BUILD && logger.log(`Sending CLS span (${clsValue})`);
 
-  const startTime = msToSec((browserPerformanceTimeOrigin || 0) + (entry?.startTime || 0));
+  const startTime = msToSec((browserPerformanceTimeOrigin() || 0) + (entry?.startTime || 0));
   const routeName = getCurrentScope().getScopeData().transactionName;
 
   const name = entry ? htmlTreeAsString(entry.sources[0]?.node) : 'Layout shift';

packages/browser-utils/src/metrics/inp.ts

@@ -28,7 +28,7 @@ const INTERACTIONS_SPAN_MAP = new Map<number, Span>();
  */
 export function startTrackingINP(): () => void {
   const performance = getBrowserPerformanceAPI();
-  if (performance && browserPerformanceTimeOrigin) {
+  if (performance && browserPerformanceTimeOrigin()) {
     const inpCallback = _trackINP();
 
     return (): void => {
@@ -85,7 +85,7 @@ function _trackINP(): () => void {
     const interactionType = INP_ENTRY_MAP[entry.name];
 
     /** Build the INP span, create an envelope from the span, and then send the envelope */
-    const startTime = msToSec((browserPerformanceTimeOrigin as number) + entry.startTime);
+    const startTime = msToSec((browserPerformanceTimeOrigin() as number) + entry.startTime);
     const duration = msToSec(metric.value);
     const activeSpan = getActiveSpan();
     const rootSpan = activeSpan ? getRootSpan(activeSpan) : undefined;

packages/browser/src/profiling/utils.ts

@@ -241,9 +241,9 @@ export function convertJSSelfProfileToSampledFormat(input: JSSelfProfile): Profi
   // when that happens, we need to ensure we are correcting the profile timings so the two timelines stay in sync.
   // Since JS self profiling time origin is always initialized to performance.timeOrigin, we need to adjust for
   // the drift between the SDK selected value and our profile time origin.
-  const origin =
-    typeof performance.timeOrigin === 'number' ? performance.timeOrigin : browserPerformanceTimeOrigin || 0;
-  const adjustForOriginChange = origin - (browserPerformanceTimeOrigin || origin);
+  const perfOrigin = browserPerformanceTimeOrigin();
+  const origin = typeof performance.timeOrigin === 'number' ? performance.timeOrigin : perfOrigin || 0;
+  const adjustForOriginChange = origin - (perfOrigin || origin);
 
   input.samples.forEach((jsSample, i) => {
     // If sample has no stack, add an empty sample

packages/browser/src/tracing/browserTracingIntegration.ts

@@ -364,10 +364,11 @@ export const browserTracingIntegration = ((_options: Partial<BrowserTracingOptio
 
       if (WINDOW.location) {
         if (instrumentPageLoad) {
+          const origin = browserPerformanceTimeOrigin();
           startBrowserTracingPageLoadSpan(client, {
             name: WINDOW.location.pathname,
             // pageload should always start at timeOrigin (and needs to be in s, not ms)
-            startTime: browserPerformanceTimeOrigin ? browserPerformanceTimeOrigin / 1000 : undefined,
+            startTime: origin ? origin / 1000 : undefined,
             attributes: {
               [SEMANTIC_ATTRIBUTE_SENTRY_SOURCE]: 'url',
               [SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN]: 'auto.pageload.browser',

packages/browser/src/tracing/request.ts

@@ -260,7 +260,7 @@ export function extractNetworkProtocol(nextHopProtocol: string): { name: string;
 }
 
 function getAbsoluteTime(time: number = 0): number {
-  return ((browserPerformanceTimeOrigin || performance.timeOrigin) + time) / 1000;
+  return ((browserPerformanceTimeOrigin() || performance.timeOrigin) + time) / 1000;
 }
 
 function resourceTimingEntryToSpanData(resourceTiming: PerformanceResourceTiming): [string, string | number][] {
@@ -270,7 +270,7 @@ function resourceTimingEntryToSpanData(resourceTiming: PerformanceResourceTiming
 
   timingSpanData.push(['network.protocol.version', version], ['network.protocol.name', name]);
 
-  if (!browserPerformanceTimeOrigin) {
+  if (!browserPerformanceTimeOrigin()) {
     return timingSpanData;
   }
   return [

packages/core/src/utils-hoist/index.ts

@@ -88,8 +88,6 @@ export {
 } from './supports';
 export { SyncPromise, rejectedSyncPromise, resolvedSyncPromise } from './syncpromise';
 export {
-  // eslint-disable-next-line deprecation/deprecation
-  _browserPerformanceTimeOriginMode,
   browserPerformanceTimeOrigin,
   dateTimestampInSeconds,
   timestampInSeconds,

packages/core/src/utils-hoist/time.ts

@@ -67,26 +67,21 @@ function createUnixTimestampInSecondsFunc(): () => number {
 export const timestampInSeconds = createUnixTimestampInSecondsFunc();
 
 /**
- * Internal helper to store what is the source of browserPerformanceTimeOrigin below. For debugging only.
- *
- * @deprecated This variable will be removed in the next major version.
+ * Cached result of getBrowserTimeOrigin.
  */
-export let _browserPerformanceTimeOriginMode: string;
+let cachedTimeOrigin: [number | undefined, string] | undefined;
 
 /**
- * The number of milliseconds since the UNIX epoch. This value is only usable in a browser, and only when the
- * performance API is available.
+ * Gets the time origin and the mode used to determine it.
  */
-export const browserPerformanceTimeOrigin = ((): number | undefined => {
+function getBrowserTimeOrigin(): [number | undefined, string] {
   // Unfortunately browsers may report an inaccurate time origin data, through either performance.timeOrigin or
   // performance.timing.navigationStart, which results in poor results in performance data. We only treat time origin
   // data as reliable if they are within a reasonable threshold of the current time.
 
   const { performance } = GLOBAL_OBJ as typeof GLOBAL_OBJ & Window;
   if (!performance?.now) {
-    // eslint-disable-next-line deprecation/deprecation
-    _browserPerformanceTimeOriginMode = 'none';
-    return undefined;
+    return [undefined, 'none'];
   }
 
   const threshold = 3600 * 1000;
@@ -114,18 +109,24 @@ export const browserPerformanceTimeOrigin = ((): number | undefined => {
   if (timeOriginIsReliable || navigationStartIsReliable) {
     // Use the more reliable time origin
     if (timeOriginDelta <= navigationStartDelta) {
-      // eslint-disable-next-line deprecation/deprecation
-      _browserPerformanceTimeOriginMode = 'timeOrigin';
-      return performance.timeOrigin;
+      return [performance.timeOrigin, 'timeOrigin'];
     } else {
-      // eslint-disable-next-line deprecation/deprecation
-      _browserPerformanceTimeOriginMode = 'navigationStart';
-      return navigationStart;
+      return [navigationStart, 'navigationStart'];
     }
   }
 
   // Either both timeOrigin and navigationStart are skewed or neither is available, fallback to Date.
-  // eslint-disable-next-line deprecation/deprecation
-  _browserPerformanceTimeOriginMode = 'dateNow';
-  return dateNow;
-})();
+  return [dateNow, 'dateNow'];
+}
+
+/**
+ * The number of milliseconds since the UNIX epoch. This value is only usable in a browser, and only when the
+ * performance API is available.
+ */
+export function browserPerformanceTimeOrigin(): number | undefined {
+  if (!cachedTimeOrigin) {
+    cachedTimeOrigin = getBrowserTimeOrigin();
+  }
+
+  return cachedTimeOrigin[0];
+}

packages/ember/addon/instance-initializers/sentry-performance.ts

@@ -366,8 +366,9 @@ function _instrumentInitialLoad(config: EmberSentryConfig): void {
     return;
   }
 
+  const origin = browserPerformanceTimeOrigin();
   // Split performance check in two so clearMarks still happens even if timeOrigin isn't available.
-  if (!HAS_PERFORMANCE_TIMING || browserPerformanceTimeOrigin === undefined) {
+  if (!HAS_PERFORMANCE_TIMING || origin === undefined) {
     return;
   }
   const measureName = '@sentry/ember:initial-load';
@@ -383,7 +384,7 @@ function _instrumentInitialLoad(config: EmberSentryConfig): void {
   // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
   const measure = measures[0]!;
 
-  const startTime = (measure.startTime + browserPerformanceTimeOrigin) / 1000;
+  const startTime = (measure.startTime + origin) / 1000;
   const endTime = startTime + measure.duration / 1000;
 
   startInactiveSpan({

packages/nextjs/src/client/routing/appRouterRoutingInstrumentation.ts

@@ -11,10 +11,11 @@ export const INCOMPLETE_APP_ROUTER_INSTRUMENTATION_TRANSACTION_NAME = 'incomplet
 
 /** Instruments the Next.js app router for pageloads. */
 export function appRouterInstrumentPageLoad(client: Client): void {
+  const origin = browserPerformanceTimeOrigin();
   startBrowserTracingPageLoadSpan(client, {
     name: WINDOW.location.pathname,
     // pageload should always start at timeOrigin (and needs to be in s, not ms)
-    startTime: browserPerformanceTimeOrigin ? browserPerformanceTimeOrigin / 1000 : undefined,
+    startTime: origin ? origin / 1000 : undefined,
     attributes: {
       [SEMANTIC_ATTRIBUTE_SENTRY_OP]: 'pageload',
       [SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN]: 'auto.pageload.nextjs.app_router_instrumentation',

packages/nextjs/src/client/routing/pagesRouterRoutingInstrumentation.ts

@@ -119,12 +119,13 @@ export function pagesRouterInstrumentPageLoad(client: Client): void {
     name = name.replace(/^(GET|POST|PUT|DELETE|PATCH|HEAD|OPTIONS|TRACE|CONNECT)\s+/i, '');
   }
 
+  const origin = browserPerformanceTimeOrigin();
   startBrowserTracingPageLoadSpan(
     client,
     {
       name,
       // pageload should always start at timeOrigin (and needs to be in s, not ms)
-      startTime: browserPerformanceTimeOrigin ? browserPerformanceTimeOrigin / 1000 : undefined,
+      startTime: origin ? origin / 1000 : undefined,
       attributes: {
         [SEMANTIC_ATTRIBUTE_SENTRY_OP]: 'pageload',
         [SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN]: 'auto.pageload.nextjs.pages_router_instrumentation',

packages/replay-internal/src/util/createPerformanceEntries.ts

@@ -89,7 +89,7 @@ function createPerformanceEntry(entry: AllPerformanceEntry): ReplayPerformanceEn
 function getAbsoluteTime(time: number): number {
   // browserPerformanceTimeOrigin can be undefined if `performance` or
   // `performance.now` doesn't exist, but this is already checked by this integration
-  return ((browserPerformanceTimeOrigin || WINDOW.performance.timeOrigin) + time) / 1000;
+  return ((browserPerformanceTimeOrigin() || WINDOW.performance.timeOrigin) + time) / 1000;
 }
 
 function createPaintEntry(entry: PerformancePaintTiming): ReplayPerformanceEntry<PaintData> {

packages/replay-internal/test/integration/flush.test.ts

@@ -93,7 +93,7 @@ describe('Integration | flush', () => {
     mockEventBufferFinish.mockClear();
 
     Object.defineProperty(SentryUtils, 'browserPerformanceTimeOrigin', {
-      value: BASE_TIMESTAMP,
+      value: () => BASE_TIMESTAMP,
       writable: true,
     });
   });
@@ -107,7 +107,7 @@ describe('Integration | flush', () => {
       writable: true,
     });
     Object.defineProperty(SentryUtils, 'browserPerformanceTimeOrigin', {
-      value: prevBrowserPerformanceTimeOrigin,
+      value: () => prevBrowserPerformanceTimeOrigin,
       writable: true,
     });
   });

packages/replay-internal/test/unit/util/createPerformanceEntry.test.ts

@@ -7,7 +7,7 @@ vi.setSystemTime(new Date('2023-01-01'));
 
 vi.mock('@sentry/core', async () => ({
   ...(await vi.importActual('@sentry/core')),
-  browserPerformanceTimeOrigin: new Date('2023-01-01').getTime(),
+  browserPerformanceTimeOrigin: () => new Date('2023-01-01').getTime(),
 }));
 
 import { WINDOW } from '../../../src/constants';