feat(core): Allow for nested trpc context (#15379)

As reported in
https://discord.com/channels/621778831602221064/1339165240482463816/1339165240482463816
we are not capturing trpc input deeply.

Author: Luca Forstner

dev-packages/e2e-tests/test-applications/node-express/src/app.ts

@@ -115,9 +115,11 @@ export const appRouter = t.router({
     await new Promise(resolve => setTimeout(resolve, 400));
     return { success: true };
   }),
-  crashSomething: procedure.mutation(() => {
-    throw new Error('I crashed in a trpc handler');
-  }),
+  crashSomething: procedure
+    .input(z.object({ nested: z.object({ nested: z.object({ nested: z.string() }) }) }))
+    .mutation(() => {
+      throw new Error('I crashed in a trpc handler');
+    }),
   dontFindSomething: procedure.mutation(() => {
     throw new TRPCError({ code: 'NOT_FOUND', cause: new Error('Page not found') });
   }),

dev-packages/e2e-tests/test-applications/node-express/tests/trpc.test.ts

@@ -87,13 +87,22 @@ test('Should record transaction and error for a crashing trpc handler', async ({
     ],
   });
 
-  await expect(trpcClient.crashSomething.mutate()).rejects.toBeDefined();
+  await expect(trpcClient.crashSomething.mutate({ nested: { nested: { nested: 'foobar' } } })).rejects.toBeDefined();
 
   await expect(transactionEventPromise).resolves.toBeDefined();
   await expect(errorEventPromise).resolves.toBeDefined();
 
   expect((await errorEventPromise).contexts?.trpc?.['procedure_type']).toBe('mutation');
   expect((await errorEventPromise).contexts?.trpc?.['procedure_path']).toBe('crashSomething');
+
+  // Should record nested context
+  expect((await errorEventPromise).contexts?.trpc?.['input']).toEqual({
+    nested: {
+      nested: {
+        nested: 'foobar',
+      },
+    },
+  });
 });
 
 test('Should record transaction and error for a trpc handler that returns a status code', async ({ baseURL }) => {

packages/core/src/trpc.ts

@@ -2,6 +2,7 @@ import { getClient, withScope } from './currentScopes';
 import { captureException } from './exports';
 import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN, SEMANTIC_ATTRIBUTE_SENTRY_SOURCE } from './semanticAttributes';
 import { startSpanManual } from './tracing';
+import { addNonEnumerableProperty } from './utils-hoist';
 import { normalize } from './utils-hoist/normalize';
 
 interface SentryTrpcMiddlewareOptions {
@@ -51,6 +52,13 @@ export function trpcMiddleware(options: SentryTrpcMiddlewareOptions = {}) {
       procedure_type: type,
     };
 
+    addNonEnumerableProperty(
+      trpcContext,
+      '__sentry_override_normalization_depth__',
+      1 + // 1 for context.input + the normal normalization depth
+        (clientOptions?.normalizeDepth ?? 5), // 5 is a sane depth
+    );
+
     if (options.attachRpcInput !== undefined ? options.attachRpcInput : clientOptions?.sendDefaultPii) {
       if (rawInput !== undefined) {
         trpcContext.input = normalize(rawInput);