ref(core): Rename performanceNowInMs to safePerformanceNow

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: Lms24

packages/core/src/tracing/sentrySpan.ts

@@ -43,7 +43,7 @@ import {
   TRACE_FLAG_NONE,
   TRACE_FLAG_SAMPLED,
 } from '../utils/spanUtils';
-import { performanceNowInMs, timestampInSeconds } from '../utils/time';
+import { safePerformanceNow, timestampInSeconds } from '../utils/time';
 import { getDynamicSamplingContextFromSpan } from './dynamicSamplingContext';
 import { logSpanEnd } from './logSpans';
 import { timedEventsToMeasurements } from './measurement';
@@ -105,7 +105,7 @@ export class SentrySpan implements Span {
       this._startTime = spanContext.startTimestamp;
     } else {
       this._startTime = timestampInSeconds();
-      this._startPerformanceNow = performanceNowInMs();
+      this._startPerformanceNow = safePerformanceNow();
     }
     this._links = spanContext.links;
 
@@ -367,7 +367,7 @@ export class SentrySpan implements Span {
    * device slept), and it can never be negative.
    */
   private _getEndTimeFromDuration(): number {
-    const performanceNow = this._startPerformanceNow === undefined ? undefined : performanceNowInMs();
+    const performanceNow = this._startPerformanceNow === undefined ? undefined : safePerformanceNow();
     if (performanceNow === undefined || this._startPerformanceNow === undefined) {
       return timestampInSeconds();
     }

packages/core/src/utils/time.ts

@@ -119,7 +119,7 @@ function createUnixTimestampInSecondsFunc(): () => number {
 /**
  * Returns `performance.now()` in milliseconds, or `undefined` if the Performance API is unavailable.
  */
-export function performanceNowInMs(): number | undefined {
+export function safePerformanceNow(): number | undefined {
   const { performance } = GLOBAL_OBJ as typeof GLOBAL_OBJ & { performance?: Performance };
   return performance?.now ? withRandomSafeContext(() => performance.now()) : undefined;
 }