Update packages/browser/src/tracing/browserTracingIntegration.ts

Co-authored-by: Lukas Stracke <[email protected]>

Author: Luca Forstner

packages/browser/src/tracing/browserTracingIntegration.ts

@@ -197,7 +197,9 @@ export interface BrowserTracingOptions {
   shouldCreateSpanForRequest?(this: void, url: string): boolean;
 
   /**
-   * Is called when spans are started for outgoing requests.
+   * This callback is invoked directly after a span is started for an outgoing fetch or XHR request.
+   * You can use it to annotate the span with additional data or attributes, for example by setting
+   * attributes based on the passed request headers.
    */
   onRequestSpanStart(span: Span, requestInformation: { headers?: WebFetchHeaders }): void;
 }