nil,
	}, {
		multiErr{errors.New("a"), errorT{"T"}},
		&errT,
		true,
		errorT{"T"},
	}, {
		multiErr{errorT{"T"}, errors.New("a")},
		&errT,
		true,
		errorT{"T"},
	}, {
		multiErr{errorT{"a"}, errorT{"b"}},
		&errT,
		true,
		errorT{"a"},
	}, {
		multiErr{multiErr{errors.New("a"), errorT{"a"}}, errorT{"b"}},
		&errT,
		true,
		errorT{"a"},
	}, {

// An errorDesc describes part of a type-checking error.
type errorDesc struct {
	pos syntax.Pos
	msg string
}

// An error_ represents a type-checking error.
// A new error_ is created with Checker.newError.
// To report an error_, call error_.report.
type error_ struct {
	check *Checker
	desc  []errorDesc
	code  Code
	soft  bool // TODO(gri) eventually determine this from an error code
}

type gobError struct {
	err error
}

// errorf is like error_ but takes Printf-style arguments to construct an error.
// It always prefixes the message with "gob: ".
func errorf(format string, args ...any) {
	error_(fmt.Errorf("gob: "+format, args...))
}

// error_ wraps the argument error and uses it as the argument to panic.
func error_(err error) {
	panic(gobError{err})

*/

package mergepatch

import (
	"errors"
	"fmt"
	"reflect"
)

var (
	ErrBadJSONDoc                           = errors.New("invalid JSON document")
	ErrNoListOfLists                        = errors.New("lists of lists are not supported")
	ErrBadPatchFormatForPrimitiveList       = errors.New("invalid patch format of primitive list")
	ErrBadPatchFormatForRetainKeys          = errors.New("invalid patch format of retainKeys")

func _() {
	0 /* ERRORx "0 .* is not used" */
	0 /* ERRORx "0 .* is not used" */
	0 // ERRORx "0 .* is not used"
	0 // ERRORx "0 .* is not used"
}

// Don't report spurious errors as a consequence of earlier errors.
// Add more tests as needed.
func _() {
	if err := foo /* ERROR "undefined" */ (); err != nil /* "no error here" */ {}
}

// Use unqualified names for package-local objects.
type T struct{}

limitations under the License.
*/

package errors

import "fmt"

// ErrCorruptCheckpoint error is reported when checksum does not match
var ErrCorruptCheckpoint = fmt.Errorf("checkpoint is corrupted")

// ErrCheckpointNotFound is reported when checkpoint is not found for a given key

func Errorf(format string, a ...interface{}) error {
	e := fmt.Errorf(format, a...)
	ee := Error{}
	ee.msg = e.Error()
	ee.cause = errors.Unwrap(e)
	return ee
}

// Unwrap the internal error.
func (e Error) Unwrap() error { return e.cause }

// Error 'error' compatible method.
func (e Error) Error() string {
	if e.msg == "" {
		return "crypto: cause <nil>"
	}
	return e.msg
}

var (

package fmt

import (
	"errors"
	"slices"
)

// Errorf formats according to a format specifier and returns the string as a
// value that satisfies error.
//
// If the format specifier includes a %w verb with an error operand,
// the returned error will implement an Unwrap method returning the operand.
// If there is more than one %w verb, the returned error will implement an

			eType:   -1,
			err:     fmt.Errorf("test error5"),
			message: "UNKNOWN",
			code:    codes.Internal,
		},
	}

	for k, tc := range testCases {
		caErr := NewError(tc.eType, tc.err)
		if caErr.Error() != tc.err.Error() {
			t.Errorf("[%s] unexpected error: '%s' VS (expected)'%s'", k, caErr.Error(), tc.err.Error())
		}
		if caErr.ErrorType() != tc.message {

type Matcher func(error) bool

// FilterOut removes all errors that match any of the matchers from the input
// error.  If the input is a singular error, only that error is tested.  If the
// input implements the Aggregate interface, the list of errors will be
// processed recursively.
//
// This can be used, for example, to remove known-OK errors (such as io.EOF or
// os.PathNotFound) from a list of errors.