SvelteKit Observability with TraceKit
SvelteKit load functions can run on the server or client depending on navigation type, and hooks intercept every request in a pipeline you cannot see. TraceKit traces load functions, hooks, and form actions so you always know where your code is actually executing.
SvelteKit observability challenges
Common problems that SvelteKit developers face in production -- and how TraceKit solves them.
Load Function Server/Client Split
SvelteKit load functions run on the server during SSR but on the client during client-side navigation. The same function executes in two different environments, making it hard to reproduce issues. TraceKit traces load functions in both contexts so you can see whether the server or client path is causing the problem.
Hooks Pipeline Tracing
SvelteKit's handle hooks form an invisible middleware pipeline that runs before every request. When hooks modify the request, add authentication, or redirect, there is no built-in way to see the chain. TraceKit instruments the hooks pipeline so each hook step appears as a span in the trace.
Form Action Debugging
SvelteKit form actions handle POST requests server-side, but errors in actions surface as generic failure messages on the client. TraceKit traces form action execution with full request data so you can see exactly what failed and why without adding console logs.
Get started in minutes
Add OpenTelemetry instrumentation to your SvelteKit app with a few lines of code.
// src/hooks.server.ts (SvelteKit server)
const { NodeSDK } = require('@opentelemetry/sdk-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const sdk = new NodeSDK({
instrumentations: [getNodeAutoInstrumentations()],
serviceName: 'my-sveltekit-server',
});
sdk.start();
// Client-side: initialize TraceKit Browser SDK
// src/hooks.client.ts
// import { initTraceKit } from '@tracekit/browser';
// initTraceKit({ serviceName: 'my-sveltekit-client' });JavaScript Distributed Tracing Guide
Go deeper with our JavaScript distributed tracing guide -- covering common pain points, production patterns, and code examples.
What you get with TraceKit
Distributed Tracing
Trace requests across SvelteKit load functions, hooks, form actions, and API endpoints. Full visibility into server-side and client-side execution paths.
Live Code Monitoring
Set breakpoints in your SvelteKit hooks and load functions. Inspect page data, form submissions, and error states in production without redeploying.
Simple Pricing
$29/month flat for your entire SvelteKit application. No per-route fees, no per-hook charges -- one price for full observability.
Related Resources
Learn distributed tracing patterns and best practices for Node.js
Budget-friendly open-source APM. See how TraceKit adds frontend observability at the same price.
Calculate SLA uptime and error budgets for your services
Step-by-step APM implementation checklist covering SDK installation, instrumentation, alerting, and production rollout with OpenTelemetry best practices.
Step-by-step guide to migrate from Datadog to TraceKit. Replace dd-trace with TraceKit SDK, map environment variables, and verify traces in minutes.
Ready to add observability to SvelteKit?
Get started with TraceKit in under 5 minutes. $29/month flat -- no per-host fees, no surprises.