Long traces

Adds asynchronous stack traces to error objects.

The long stack is created lazily. The overhead of this module is only adding a property to the error object, when it's thrown.

Installation

npm i long-traces

Usage

import async_hooks from "async_hooks";
import { enable } from "long-traces";

enable(async_hooks);

// stack later in error handling

try {
  throw new Error("ups");
} catch (error) {
  //this is the stacks of all ancestors (i.e. excluding the errors own stack.)
  const longStack = error.getAncestorStackFrames();
}

Known issues

• Relies on __jawisNodeStack set by jacs. So probably only works there.
• Has to monkey patch Error to get the stack when errors are thrown. This means the instanceof operator is not working properly. Might be fixable.
• Only works in node because browsers don't have the async_hooks API. This module would work in browsers with such an API available.

Related work

• longjohn
• trace
• stackup
• long-stack-traces
• superstack
• double-stack

npmtrends.com

Main inspiration is taken from trace by AndreasMadsen

License

MIT