INN-2882 Add selective header forwarding when sending events

[jpwilliams]

Summary

Read the incoming headers tracestate and traceparent. If it is set, copy the header to any outgoing event-sending requests.

This only covers step.sendEvent(); we'll add later support for client.send() as we need async hooks for this which has scattered runtime support.

Checklist

• [ ] ~Added a docs PR that references this PR~ N/A
• [ ] Added unit/integration tests
• [x] Added changesets if applicable

Related

• INN-2882

[linear[bot]]

INN-2882 Header forwarding for TS SDK

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 7ed02b4658c007655d9a552da876807c6d1f0c33

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------- | ----- | | inngest | Patch |

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[inngest-release-bot]

A user has added the prerelease/inngest label, so this PR will be published to npm with the tag pr-520. It will be updated with the latest changes as you push commits to this PR.

You can install this prerelease version with:

npm install inngest@pr-520

The last release was built and published from 7ed02b4658c007655d9a552da876807c6d1f0c33.

[darwin67]

@jpwilliams anything still waiting on? I think this PR can be merged as is.