go multierror

multierror.go

package main

import (
	"errors"
	"fmt"
)

func main() {
	err1 := errors.New("error one")
	err2 := errors.New("error two")

	jErr := errors.Join(err1, err2)

	fmt.Printf("Error string: %#v\n", jErr.Error())

	if unwrappable, ok := jErr.(interface{ Unwrap() []error }); ok {
		unwrappedErrors := unwrappable.Unwrap()
		for i, err := range unwrappedErrors {
			fmt.Printf("Unwrapped error %d: %#v\n", i, err.Error())
		}
	} else {
		fmt.Println("Error is not unwrappable")
	}
}