1package jwt
 2
 3import (
 4	"errors"
 5	"strings"
 6)
 7
 8var (
 9	ErrInvalidKey                = errors.New("key is invalid")
10	ErrInvalidKeyType            = errors.New("key is of invalid type")
11	ErrHashUnavailable           = errors.New("the requested hash function is unavailable")
12	ErrTokenMalformed            = errors.New("token is malformed")
13	ErrTokenUnverifiable         = errors.New("token is unverifiable")
14	ErrTokenSignatureInvalid     = errors.New("token signature is invalid")
15	ErrTokenRequiredClaimMissing = errors.New("token is missing required claim")
16	ErrTokenInvalidAudience      = errors.New("token has invalid audience")
17	ErrTokenExpired              = errors.New("token is expired")
18	ErrTokenUsedBeforeIssued     = errors.New("token used before issued")
19	ErrTokenInvalidIssuer        = errors.New("token has invalid issuer")
20	ErrTokenInvalidSubject       = errors.New("token has invalid subject")
21	ErrTokenNotValidYet          = errors.New("token is not valid yet")
22	ErrTokenInvalidId            = errors.New("token has invalid id")
23	ErrTokenInvalidClaims        = errors.New("token has invalid claims")
24	ErrInvalidType               = errors.New("invalid type for claim")
25)
26
27// joinedError is an error type that works similar to what [errors.Join]
28// produces, with the exception that it has a nice error string; mainly its
29// error messages are concatenated using a comma, rather than a newline.
30type joinedError struct {
31	errs []error
32}
33
34func (je joinedError) Error() string {
35	msg := []string{}
36	for _, err := range je.errs {
37		msg = append(msg, err.Error())
38	}
39
40	return strings.Join(msg, ", ")
41}
42
43// joinErrors joins together multiple errors. Useful for scenarios where
44// multiple errors next to each other occur, e.g., in claims validation.
45func joinErrors(errs ...error) error {
46	return &joinedError{
47		errs: errs,
48	}
49}