ref: Rename initial transaction on V4 to 'App Launch'

Author: jennmueng

src/js/tracing/reactnavigationv4.ts

@@ -104,7 +104,7 @@ class ReactNavigationV4Instrumentation extends RoutingInstrumentation {
    */
   private _handleInitialState(): void {
     this._latestTransaction = this.onRouteWillChange(
-      BLANK_TRANSACTION_CONTEXT_V4
+      INITIAL_TRANSACTION_CONTEXT_V4
     );
 
     // We set this to true so when registerAppContainer is called, the transaction gets updated with the actual route data
@@ -258,8 +258,8 @@ class ReactNavigationV4Instrumentation extends RoutingInstrumentation {
   };
 }
 
-const BLANK_TRANSACTION_CONTEXT_V4 = {
-  name: "Route Change",
+const INITIAL_TRANSACTION_CONTEXT_V4 = {
+  name: "App Launch",
   op: "navigation",
   tags: {
     "routing.instrumentation":
@@ -268,4 +268,4 @@ const BLANK_TRANSACTION_CONTEXT_V4 = {
   data: {},
 };
 
-export { ReactNavigationV4Instrumentation, BLANK_TRANSACTION_CONTEXT_V4 };
+export { ReactNavigationV4Instrumentation, INITIAL_TRANSACTION_CONTEXT_V4 };

test/tracing/reactnavigationv4.test.ts

@@ -3,14 +3,14 @@ import { Transaction } from "@sentry/tracing";
 
 import {
   AppContainerInstance,
-  BLANK_TRANSACTION_CONTEXT_V4,
+  INITIAL_TRANSACTION_CONTEXT_V4,
   NavigationRouteV4,
   NavigationStateV4,
   ReactNavigationV4Instrumentation,
 } from "../../src/js/tracing/reactnavigationv4";
 
 const getMockTransaction = () => {
-  const transaction = new Transaction(BLANK_TRANSACTION_CONTEXT_V4);
+  const transaction = new Transaction(INITIAL_TRANSACTION_CONTEXT_V4);
 
   transaction.sampled = false;
 
@@ -106,7 +106,7 @@ describe("ReactNavigationV4Instrumentation", () => {
 
     // eslint-disable-next-line @typescript-eslint/unbound-method
     expect(instrumentation.onRouteWillChange).toHaveBeenLastCalledWith(
-      BLANK_TRANSACTION_CONTEXT_V4
+      INITIAL_TRANSACTION_CONTEXT_V4
     );
 
     expect(mockTransaction.name).toBe(firstRoute.routeName);