Error diagnostics

ES-Runtime guarantees native exception class preservation and accurate stack trace reporting. Instead of swallowing errors as generic string blocks, the runtime retains exact subclasses (like TypeError, DOMException) and precise source mapping points.

Stack traces

When an unhandled exception or unhandled promise rejection bubbles to the top level, esrun elegantly formats the error trace in your CLI:

TEXT

error: uncaught exception in my-script.mjs
TypeError: network connection refused
    at fetchData (file:///path/to/script.mjs:10:5)
    at file:///path/to/script.mjs:2:1

Good to know

The CLI handles color formatting seamlessly and adjusts gracefully if piped into other tools or if NO_COLOR is set.