using fetch as http client doesn't add trace_id & span_id as Headers

[vigohe]

Expected behaviour When fetch it's execute should add trace_id & span_id automatically as Headers

Actual behaviour When checking a trace between two services no dependency exists because the trace_id & span_id are missing

Steps to reproduce fetch("http://example.com");

Environment docker

• Operation system: docker image node:18-alpine
• Node.js version: node 18
• Tracer version: 2.10.0
• Agent version: 7.37.1

[rochdev]

Changing this to a feature request since the reason this doesn't work is that fetch is not supported yet so we don't have an integration for it.

[pinko-fowle]

There is some work in progress from back in April in #2010.

Node 18.13.0 just shipped fetch without the experimental warning. The PR for that is nodejs/node#45287.