# DTP Import Trace

As a useful tool for diagnosing circular dependencies, you can enable log tracing of imports at runtime by editing [register.js](../register.js) and un-commenting:

```js
// register("./es-import-trace.js", pathToFileURL("./"));
```

This will load the [es-import-trace.js](../es-import-trace.js) "loader" which prints the URL of the module being imported, then returns the result of the default loader.