chore(browser): Export ipAddress helpers for use in other SDKs (#15079)

- Related to #15008

Export helpers to avoid duplications in sentry/react-native.

- RN PR getsentry/sentry-react-native#4466

packages/browser/src/client.ts

@@ -9,7 +9,13 @@ import type {
   Scope,
   SeverityLevel,
 } from '@sentry/core';
-import { Client, applySdkMetadata, getSDKSource } from '@sentry/core';
+import {
+  Client,
+  addAutoIpAddressToSession,
+  addAutoIpAddressToUser,
+  applySdkMetadata,
+  getSDKSource,
+} from '@sentry/core';
 import { eventFromException, eventFromMessage } from './eventbuilder';
 import { WINDOW } from './helpers';
 import type { BrowserTransportOptions } from './transports/types';
@@ -84,29 +90,8 @@ export class BrowserClient extends Client<BrowserClientOptions> {
     }
 
     if (this._options.sendDefaultPii) {
-      this.on('postprocessEvent', event => {
-        if (event.user?.ip_address === undefined) {
-          event.user = {
-            ...event.user,
-            ip_address: '{{auto}}',
-          };
-        }
-      });
-
-      this.on('beforeSendSession', session => {
-        if ('aggregates' in session) {
-          if (session.attrs?.['ip_address'] === undefined) {
-            session.attrs = {
-              ...session.attrs,
-              ip_address: '{{auto}}',
-            };
-          }
-        } else {
-          if (session.ipAddress === undefined) {
-            session.ipAddress = '{{auto}}';
-          }
-        }
-      });
+      this.on('postprocessEvent', addAutoIpAddressToUser);
+      this.on('beforeSendSession', addAutoIpAddressToSession);
     }
   }
 

packages/core/src/index.ts

@@ -72,6 +72,7 @@ export { hasTracingEnabled } from './utils/hasTracingEnabled';
 export { isSentryRequestUrl } from './utils/isSentryRequestUrl';
 export { handleCallbackErrors } from './utils/handleCallbackErrors';
 export { parameterize } from './utils/parameterize';
+export { addAutoIpAddressToSession, addAutoIpAddressToUser } from './utils/ipAddress';
 export {
   spanToTraceHeader,
   spanToJSON,

packages/core/src/utils/ipAddress.ts

@@ -0,0 +1,35 @@
+import type { Session, SessionAggregates, User } from '../types-hoist';
+
+// By default, we want to infer the IP address, unless this is explicitly set to `null`
+// We do this after all other processing is done
+// If `ip_address` is explicitly set to `null` or a value, we leave it as is
+
+/**
+ * @internal
+ */
+export function addAutoIpAddressToUser(objWithMaybeUser: { user?: User | null }): void {
+  if (objWithMaybeUser.user?.ip_address === undefined) {
+    objWithMaybeUser.user = {
+      ...objWithMaybeUser.user,
+      ip_address: '{{auto}}',
+    };
+  }
+}
+
+/**
+ * @internal
+ */
+export function addAutoIpAddressToSession(session: Session | SessionAggregates): void {
+  if ('aggregates' in session) {
+    if (session.attrs?.['ip_address'] === undefined) {
+      session.attrs = {
+        ...session.attrs,
+        ip_address: '{{auto}}',
+      };
+    }
+  } else {
+    if (session.ipAddress === undefined) {
+      session.ipAddress = '{{auto}}';
+    }
+  }
+}