ref(core): Make getTransport method on client optional (#4013)

Author: kamilogorek

packages/tracing/src/transaction.ts

@@ -106,7 +106,7 @@ export class Transaction extends SpanClass implements TransactionInterface {
 
       this._hub
         .getClient()
-        ?.getTransport()
+        ?.getTransport?.()
         .recordLostEvent?.(Outcome.SampleRate, 'transaction');
 
       return undefined;

packages/types/src/client.ts

@@ -61,7 +61,7 @@ export interface Client<O extends Options = Options> {
   getOptions(): O;
 
   /** Returns clients transport. */
-  getTransport(): Transport;
+  getTransport?(): Transport;
 
   /**
    * Flush the event queue and set the client to `enabled = false`. See {@link Client.flush}.