fix circular dep check

Author: mydea

packages/core/src/tracing/span.ts

@@ -14,13 +14,9 @@ import type {
 import { dropUndefinedKeys, logger, timestampInSeconds, uuid4 } from '@sentry/utils';
 
 import { DEBUG_BUILD } from '../debug-build';
-import { spanToTraceContext, spanToTraceHeader } from '../utils/spanUtils';
+import { TraceFlagNone, TraceFlagSampled, spanToTraceContext, spanToTraceHeader } from '../utils/spanUtils';
 import { ensureTimestampInSeconds } from './utils';
 
-export const TraceFlagNone = 0x0;
-// eslint-disable-next-line no-bitwise
-export const TraceFlagSampled = 0x1 << 0;
-
 /**
  * Keeps track of finished spans for a given transaction
  * @internal

packages/core/src/utils/spanUtils.ts

@@ -1,6 +1,9 @@
 import type { Span, TraceContext } from '@sentry/types';
 import { dropUndefinedKeys, generateSentryTraceHeader } from '@sentry/utils';
-import { TraceFlagSampled } from '../tracing/span';
+
+export const TraceFlagNone = 0x0;
+// eslint-disable-next-line no-bitwise
+export const TraceFlagSampled = 0x1 << 0;
 
 /**
  * Convert a span to a trace context, which can be sent as the `trace` context in an event.