Improve error handling in kyaml libraries

kyaml/errors/errors.go

@@ -0,0 +1,32 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package errors provides libraries for working with the go-errors/errors library.
+package errors
+
+import (
+	"fmt"
+
+	goerrors "github.com/go-errors/errors"
+)
+
+// Wrap returns err wrapped in a go-error.  If err is nil, returns nil.
+func Wrap(err interface{}) error {
+	if err == nil {
+		return nil
+	}
+	return goerrors.Wrap(err, 1)
+}
+
+// WrapPrefixf returns err wrapped in a go-error with a message prefix.  If err is nil, returns nil.
+func WrapPrefixf(err interface{}, msg string, args ...interface{}) error {
+	if err == nil {
+		return nil
+	}
+	return goerrors.WrapPrefix(err, fmt.Sprintf(msg, args...), 1)
+}
+
+// Errorf returns a new go-error.
+func Errorf(msg string, args ...interface{}) error {
+	return goerrors.Wrap(fmt.Errorf(msg, args...), 1)
+}