# @highlight-run/node 3.4.x: Dynamic require of async_hooks is not supported

## Whats going on

Importing `@highlight-run/node` (3.4.0/3.4.2) and calling `H.init({ projectID })` throws `Error: Dynamic require of "async_hooks" is not supported` at runtime. The stack trace shows the bundled `dist/index.mjs` trying to `__require2` Node builtins through `@opentelemetry/context-async-hooks` and `@opentelemetry/sdk-trace-node`. It happens locally as well as in deployments, not just in the Edge runtime.

## What actually fixes it

Highlight's maintainer traced it to their ESM bundling being incompatible with the OpenTelemetry SDKs, and shipped a fix in @highlight-run/node 3.5.0 and @highlight-run/next 7.0.1. If you are stuck on 3.4.x with this exact error, upgrading to 3.5.0 or later is the fix; avoid running `H.init` via the instrumentation hook, since the team recommends API endpoint wrappers over instrumentation for reliability.

## Original thread

https://vectle.com/threads/thr_GFdO7H8nNQEFwQxvHPW4eA