@tanstack/solid-router-devtools@1.132.44 breaks hosted app with ERR_PACKAGE_PATH_NOT_EXPORTED

[Dillpickleschmidt]

Which project does this relate to?

Router

Describe the bug

I'm getting the following error from my AWS CouldWatch logs and I've identified that it's an issue with @tanstack/solid-router-devtools@1.132.44 (1.132.41 works fine):

2025-10-07T01:47:52.315Z	0a9ae72d-54ed-4e55-b617-27357ef74898	ERROR	[request error] [unhandled] [GET] https://staging.nihongoninja.io/
 Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './web' is not defined by "exports" in /var/task/node_modules/solid-js/package.json imported from /var/task/chunks/virtual/entry.mjs
    at exportsNotFound (node:internal/modules/esm/resolve:326:10)
    ... 8 lines matching cause stack trace ...
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:236:38) {
  cause: Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './web' is not defined by "exports" in /var/task/node_modules/solid-js/package.json imported from /var/task/chunks/virtual/entry.mjs
      at exportsNotFound (node:internal/modules/esm/resolve:326:10)
      at packageExportsResolve (node:internal/modules/esm/resolve:674:9)
      at packageResolve (node:internal/modules/esm/resolve:860:14)
      at moduleResolve (node:internal/modules/esm/resolve:950:18)
      at moduleResolveWithNodePath (node:internal/modules/esm/resolve:1192:14)
      at defaultResolve (node:internal/modules/esm/resolve:1235:79)
      at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:642:12)
      at #cachedDefaultResolve (node:internal/modules/esm/loader:591:25)
      at ModuleLoader.resolve (node:internal/modules/esm/loader:574:38)
      at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:236:38) {
    code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
  },
  statusCode: 500,
  fatal: false,
  unhandled: true,
  statusMessage: undefined,
  data: undefined
}

Note that it builds without issue.

Your Example Website or App

N/A

Steps to Reproduce the Bug or Issue

Host a generic TanStack Solid Start app on AWS Lambda with @tanstack/solid-router-devtools@1.132.44 installed.
Add <TanStackRouterDevtools /> to the __root.tsx next to the <Outlet />.

Expected behavior

Regular working app. I currently only see a page with this message:

{
  "error": true,
  "url": "https://staging.nihongoninja.io/",
  "statusCode": 500,
  "statusMessage": "Server Error",
  "message": "Server Error"
}

Screenshots or Videos

No response

Platform

• Router / Start Version: 1.132.44
• OS: Linux
• Browser: Tested in Chrome
• Browser Version: N/A
• Bundler: @tanstack/nitro-v2-vite-plugin
• Bundler Version: vite@6.3.6

Additional context

No response

[leonardo2204]

I'm having the same problem even using the react version.

2025-10-07T08:18:56.939442592Z Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/app/.output/server/node_modules/@tanstack/router-devtools-core/dist/esm/node_modules/.pnpm/solid-js@1.9.5/node_modules/solid-js/dist/solid.js' imported from /app/.output/server/node_modules/@tanstack/router-devtools-core/dist/esm/packages/router-devtools-core/src/TanStackRouterDevtoolsCore.js
2025-10-07T08:18:56.939757905Z     at finalizeResolution (node:internal/modules/esm/resolve:275:11)
2025-10-07T08:18:56.939925184Z     ... 8 lines matching cause stack trace ...
2025-10-07T08:18:56.940031411Z     at process.processImmediate (node:internal/timers:505:21) {
2025-10-07T08:18:56.940113825Z   cause: Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/app/.output/server/node_modules/@tanstack/router-devtools-core/dist/esm/node_modules/.pnpm/solid-js@1.9.5/node_modules/solid-js/dist/solid.js' imported from /app/.output/server/node_modules/@tanstack/router-devtools-core/dist/esm/packages/router-devtools-core/src/TanStackRouterDevtoolsCore.js
2025-10-07T08:18:56.940205056Z       at finalizeResolution (node:internal/modules/esm/resolve:275:11)
2025-10-07T08:18:56.940296993Z       at moduleResolve (node:internal/modules/esm/resolve:860:10)
2025-10-07T08:18:56.940382098Z       at defaultResolve (node:internal/modules/esm/resolve:984:11)
2025-10-07T08:18:56.940490915Z       at nextResolve (node:internal/modules/esm/hooks:748:28)
2025-10-07T08:18:56.940531718Z       at resolve (/app/.output/server/node_modules/import-in-the-middle/hook.js:343:26)
2025-10-07T08:18:56.940627592Z       at nextResolve (node:internal/modules/esm/hooks:748:28)
2025-10-07T08:18:56.940724450Z       at Hooks.resolve (node:internal/modules/esm/hooks:240:30)
2025-10-07T08:18:56.940810105Z       at handleMessage (node:internal/modules/esm/worker:199:24)
2025-10-07T08:18:56.940893395Z       at Immediate.checkForMessages (node:internal/modules/esm/worker:141:28)
2025-10-07T08:18:56.940976386Z       at process.processImmediate (node:internal/timers:505:21) {

deps:
"@tanstack/react-router-devtools": "1.132.47"
"@tanstack/react-start": "1.132.48",
"@tanstack/react-router": "1.132.47"

[JosueDiazC]

I had similar issue after building, by the moment I solved importing conditionally in my __root

// __root.tsx
...
const ReactQueryDevtools = import.meta.env.DEV
	? lazy(() =>
			import("@tanstack/react-query-devtools").then((res) => ({
				default: res.ReactQueryDevtools,
			})),
		)
	: () => null;

const TanStackRouterDevtools = import.meta.env.DEV
	? lazy(() =>
			import("@tanstack/react-router-devtools").then((res) => ({
				default: res.TanStackRouterDevtools,
			})),
		)
	: () => null;
...