ref(hub): Simplify getting hub from active domain (#3227)

Also deprecate the resulting unused function and interface.

Author: lobsterkatie

packages/hub/src/hub.ts

@@ -473,10 +473,13 @@ export function getCurrentHub(): Hub {
 
 /**
  * Returns the active domain, if one exists
- *
+ * @deprecated No longer used; remove in v7
  * @returns The domain, or undefined if there is no active domain
  */
+// eslint-disable-next-line deprecation/deprecation
 export function getActiveDomain(): DomainAsCarrier | undefined {
+  logger.warn('Function `getActiveDomain` is deprecated and will be removed in a future version.');
+
   const sentry = getMainCarrier().__SENTRY__;
 
   return sentry && sentry.extensions && sentry.extensions.domain && sentry.extensions.domain.active;
@@ -488,7 +491,7 @@ export function getActiveDomain(): DomainAsCarrier | undefined {
  */
 function getHubFromActiveDomain(registry: Carrier): Hub {
   try {
-    const activeDomain = getActiveDomain();
+    const activeDomain = getMainCarrier().__SENTRY__?.extensions?.domain?.active;
 
     // If there's no active domain, just return global hub
     if (!activeDomain) {

packages/hub/src/index.ts

@@ -1,7 +1,9 @@
+// eslint-disable-next-line deprecation/deprecation
 export { Carrier, DomainAsCarrier, Layer } from './interfaces';
 export { addGlobalEventProcessor, Scope } from './scope';
 export { Session } from './session';
 export {
+  // eslint-disable-next-line deprecation/deprecation
   getActiveDomain,
   getCurrentHub,
   getHubFromCarrier,

packages/hub/src/interfaces.ts

@@ -34,6 +34,10 @@ export interface Carrier {
   };
 }
 
+/**
+ * @hidden
+ * @deprecated Can be removed once `Hub.getActiveDomain` is removed.
+ */
 export interface DomainAsCarrier extends Carrier {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   members: { [key: string]: any }[];

packages/types/src/transaction.ts

@@ -94,8 +94,8 @@ export interface SamplingContext extends CustomSamplingContext {
   parentSampled?: boolean;
 
   /**
-   * Object representing the URL of the current page or worker script. Passed by default in a browser or service worker
-   * context.
+   * Object representing the URL of the current page or worker script. Passed by default when using the `BrowserTracing`
+   * integration.
    */
   location?: WorkerLocation;