T
TanStack•6d ago
wise-white

OpenTelemetry SDK Setup Issue with TanStack Start

I'm trying to set up OpenTelemetry in my TanStack Start project but running into build errors. My Setup - TanStack Start with cloudflare-module target - Installed @opentelemetry/sdk-node - Call setupOtel() function in server.ts The Problem When I run the build script ( vite build && tsc --noEmit), I get this error: 
Error: Cannot resolve "@opentelemetry/exporter-jaeger" from "/opt/buildhome/repo/node_modules/.pnpm/@opentelemetry+sdk-node@0.203.0_@opentelemetry+api@1.9.0/node_modules/@opentelemetry/sdk-node/build/src/utils.js" and externals are not allowed!
...
Error: Cannot resolve "@opentelemetry/exporter-jaeger" from "/opt/buildhome/repo/node_modules/.pnpm/@opentelemetry+sdk-node@0.203.0_@opentelemetry+api@1.9.0/node_modules/@opentelemetry/sdk-node/build/src/utils.js" and externals are not allowed!
...
The error happens after the Building Nitro Server (preset: cloudflare-module, compatibility date: 2024-11-13) log line. What I've Tried 1. Installing the missing package - Adding @opentelemetry/exporter-jaeger just creates a new issue (same issue mentioned in this GitHub issue) 2. Setting external packages - Tried ssr.external: ["@opentelemetry/sdk-node"] in Vite config (no effect) 3. Server-only setup - Only importing OTEL on server side still fails: 
   if (import.meta.env.SSR) {
     const { setupOtel } = await import("./utils/otel");
     setupOtel();
   }
   
   if (import.meta.env.SSR) {
     const { setupOtel } = await import("./utils/otel");
     setupOtel();
   }
4. Excluding from optimization - Added "@opentelemetry/sdk-node" to optimizeDeps.exclude in Vite config My setupOtel Function 
export function setupOtel() {
  const sdk = new NodeSDK({});
  sdk.start();
}
export function setupOtel() {
  const sdk = new NodeSDK({});
  sdk.start();
}
Looking For Help Has anyone successfully set up OpenTelemetry with TanStack Start and Cloudflare? Any advice on the right configuration would be helpful. The NextJS solutions I found don't seem to apply here, so I'm wondering if there's a TanStack Start specific approach I'm missing.
3 Replies
wise-white
wise-whiteOP•6d ago
Update: interestingly, this error only surfaces for cloudflare worker builds. I switched my target to netlify, and this error does not occur.
genetic-orange
genetic-orange•5d ago
seems like @opentelemetry/sdk-node does not work on cloudflare
genetic-orange
genetic-orange•5d ago
an alternative might be https://github.com/evanderkoogh/otel-cf-workers
GitHub
GitHub - evanderkoogh/otel-cf-workers: An OpenTelemetry compatible ...
An OpenTelemetry compatible library for instrumenting and exporting traces for Cloudflare Workers - evanderkoogh/otel-cf-workers

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