Implement infrastructure required for uploading events from node.js env to Honeycomb.

Created by: valerybugakov

Context

Implement infrastructure required for uploading events from node.js env to Honeycomb. It can be a separate client workspace to enable the reuse of infrastructure for other scripts later.

Vision

Use the new package for new scripts related to client infrastructure instrumentation and analysis. Colocate logic here to benefit from having shared:

• setup configuration (libhoney.js),
• observability event schemas,
• environment variable validators,
• unit tests.