Rrors

A proof-of-concept Golang error library that renders your error stack trace as a tree. Similar to xerrors but with support to errors.Join.

See the tests folder to see sample renderings.

Is this ready?

This is a proof of concept and hacky code all around, I'm just testing the idea :)

Usage

This is at your own risk, code is not perfect, but the idea is wrapping errors and preserving the stacktrace like xerrors did, but also adaption to errors.Join from go 1.20

err := rrors.Errorf("some error: %w", errors.Join(...))
// prints tree with stacktrace
fmt.Println(err)

Untested things

• rrors.Errorf("%w %w") ?
• errors.Is(rrors.Errorf(...)) ?
• errors.As(...)

Plans

Add ways to query an error tree like doing:

• rerrs.CountErrors(err, os.ErrNotFound) // counts the number of ErrNotFound in the error tree
• rerrs.AsMultiple[MyErrorType](err) // returns errors of this type in the error tree