feat: make traceContext accessible

Author: CorieW

src/common/trace.ts

@@ -1,6 +1,5 @@
 import { AsyncLocalStorage } from "async_hooks";
 
-/* @internal */
 export const traceContext = new AsyncLocalStorage<TraceContext>();
 
 export interface TraceContext {

src/v1/index.ts

@@ -35,6 +35,8 @@ import * as testLab from "./providers/testLab";
 
 import { setApp as setEmulatedAdminApp } from "../common/app";
 
+export { traceContext } from "../common/trace";
+
 export {
   analytics,
   auth,

src/v2/index.ts

@@ -58,6 +58,8 @@ export {
   firestore,
 };
 
+export { traceContext } from "../common/trace";
+
 export {
   setGlobalOptions,
   GlobalOptions,