Function traceHandler

traceHandler<T = Response>(opts: TraceHandlerOptions<T>): Promise<T>
Trace a single fetch-style request.

Creates a SERVER span, propagates incoming W3C trace context (traceparent/tracestate) from request headers, and injects trace context into the response headers.

Use this directly in frameworks (e.g. SvelteKit hooks) that provide Request + ExecutionContext but not the full ExportedHandler pattern.
Type Parameters
- T = Response
Parameters
- opts: TraceHandlerOptions<T>
Returns Promise<T>
Example
```
import { traceHandler } from "@tigorhutasuhut/telemetry-js";

export async function handle({ event, resolve }) {
  return traceHandler({
    serviceName: "my-sveltekit-app",
    context: event.platform?.ctx,
    env: event.platform?.env ?? {},
    request: event.request,
    handler: () => resolve(event),
  });
}
```
- Defined in src/runtimes/cloudflare/instrument.ts:259