changed argument order to put claims type before keyfunc. this is easier to read when keyfunc is an inline closure

example_test.go

@@ -63,9 +63,9 @@ func ExampleParseWithClaims_customClaimsType() {
 
 	// sample token is expired.  override time so it parses as valid
 	at(time.Unix(0, 0), func() {
-		token, err := jwt.ParseWithClaims(tokenString, func(token *jwt.Token) (interface{}, error) {
+		token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, func(token *jwt.Token) (interface{}, error) {
 			return []byte("AllYourBase"), nil
-		}, &MyCustomClaims{})
+		})
 
 		if claims, ok := token.Claims.(*MyCustomClaims); ok && token.Valid {
 			fmt.Printf("%v %v", claims.Foo, claims.StandardClaims.ExpiresAt)

parser.go

@@ -16,10 +16,10 @@ type Parser struct {
 // keyFunc will receive the parsed token and should return the key for validating.
 // If everything is kosher, err will be nil
 func (p *Parser) Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
-	return p.ParseWithClaims(tokenString, keyFunc, MapClaims{})
+	return p.ParseWithClaims(tokenString, MapClaims{}, keyFunc)
 }
 
-func (p *Parser) ParseWithClaims(tokenString string, keyFunc Keyfunc, claims Claims) (*Token, error) {
+func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
 	parts := strings.Split(tokenString, ".")
 	if len(parts) != 3 {
 		return nil, &ValidationError{err: "token contains an invalid number of segments", Errors: ValidationErrorMalformed}

parser_test.go

@@ -192,9 +192,9 @@ func TestParser_Parse(t *testing.T) {
 		// Figure out correct claims type
 		switch data.claims.(type) {
 		case jwt.MapClaims:
-			token, err = parser.ParseWithClaims(data.tokenString, data.keyfunc, jwt.MapClaims{})
+			token, err = parser.ParseWithClaims(data.tokenString, jwt.MapClaims{}, data.keyfunc)
 		case *jwt.StandardClaims:
-			token, err = parser.ParseWithClaims(data.tokenString, data.keyfunc, &jwt.StandardClaims{})
+			token, err = parser.ParseWithClaims(data.tokenString, &jwt.StandardClaims{}, data.keyfunc)
 		}
 
 		// Verify result matches expectation

request/request.go

@@ -17,22 +17,22 @@ var (
 // Currently, it looks in the Authorization header as well as
 // looking for an 'access_token' request parameter in req.Form.
 func ParseFromRequest(req *http.Request, keyFunc jwt.Keyfunc) (token *jwt.Token, err error) {
-	return ParseFromRequestWithClaims(req, keyFunc, &jwt.MapClaims{})
+	return ParseFromRequestWithClaims(req, jwt.MapClaims{}, keyFunc)
 }
 
-func ParseFromRequestWithClaims(req *http.Request, keyFunc jwt.Keyfunc, claims jwt.Claims) (token *jwt.Token, err error) {
+func ParseFromRequestWithClaims(req *http.Request, claims jwt.Claims, keyFunc jwt.Keyfunc) (token *jwt.Token, err error) {
 	// Look for an Authorization header
 	if ah := req.Header.Get("Authorization"); ah != "" {
 		// Should be a bearer token
 		if len(ah) > 6 && strings.ToUpper(ah[0:7]) == "BEARER " {
-			return jwt.ParseWithClaims(ah[7:], keyFunc, claims)
+			return jwt.ParseWithClaims(ah[7:], claims, keyFunc)
 		}
 	}
 
 	// Look for "access_token" parameter
 	req.ParseMultipartForm(10e6)
 	if tokStr := req.Form.Get("access_token"); tokStr != "" {
-		return jwt.ParseWithClaims(tokStr, keyFunc, claims)
+		return jwt.ParseWithClaims(tokStr, claims, keyFunc)
 	}
 
 	return nil, ErrNoTokenInRequest

request/request_test.go

@@ -65,7 +65,7 @@ func TestParseRequest(t *testing.T) {
 				r.Header.Set(k, tokenString)
 			}
 		}
-		token, err := ParseFromRequestWithClaims(r, keyfunc, jwt.MapClaims{})
+		token, err := ParseFromRequestWithClaims(r, jwt.MapClaims{}, keyfunc)
 
 		if token == nil {
 			t.Errorf("[%v] Token was not found: %v", data.name, err)

token.go

@@ -89,8 +89,8 @@ func Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
 	return new(Parser).Parse(tokenString, keyFunc)
 }
 
-func ParseWithClaims(tokenString string, keyFunc Keyfunc, claims Claims) (*Token, error) {
+func ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
-	return new(Parser).ParseWithClaims(tokenString, keyFunc, claims)
+	return new(Parser).ParseWithClaims(tokenString, claims, keyFunc)
 }
 
 // Encode JWT specific base64url encoding with padding stripped