yazgazan/jaydiff

package diff

// Report generates a flat list of differences encountered in the diff tree.
// Its output is less verbose than StringIndent as it doesn't report on
// matching values.
func Report(d Differ, outConf Output) ([]string, error) {
    var errs []string

    _, err := Walk(d, func(parent, diff Differ, path string) (Differ, error) {
        switch diff.Diff() {
        case Identical:
            return nil, nil
        case TypesDiffer:
            errs = append(errs, diff.StringIndent(" "+path+": ", "", outConf))
        case ContentDiffer:
            if _, ok := diff.(Walker); ok {
                return nil, nil
            }
            errs = append(errs, diff.StringIndent(" "+path+": ", "", outConf))
        }

        return nil, nil
    })

    return errs, err
}