Raise error if token auth fails

lib/stytch/errors.rb

@@ -22,4 +22,17 @@ def initialize(msg = 'JWT algorithm is incorrect')
       super
     end
   end
+
+  class JWTExpiredError < StandardError
+    def initialize(msg = 'JWT has expired')
+      super
+    end
+  end
+
+  class TokenMissingScopeError < StandardError
+    def initialize(scope)
+      msg = "Missing required scope #{scope}"
+      super(msg)
+    end
+  end
 end

lib/stytch/m2m.rb

@@ -110,27 +110,24 @@ def token(client_id:, client_secret:, scopes: nil)
     #   A map of custom claims present in the token.
     #   The type of this field is +object+.
     def authenticate_token(access_token:, required_scopes: nil, max_token_age: nil)
-      begin
-        decoded_jwt = authenticate_token_local(access_token)
-      rescue StandardError
-        # Could not authenticate locally
-        return nil
-      end
+      # Intentionally allow this to re-raise if authentication fails
+      decoded_jwt = authenticate_token_local(access_token)
 
       iat_time = Time.at(decoded_jwt['iat']).to_datetime
 
       # Token too old
       unless max_token_age.nil?
-        return nil if iat_time + max_token_age < Time.now
+        if iat_time + max_token_age < Time.now
+          raise JWTExpiredError
+        end
       end
 
       resp = marshal_jwt_into_response(decoded_jwt)
 
       unless required_scopes.nil?
         for scope in required_scopes
           unless resp['scopes'].include?(scope)
-            # Token missing a required scope
-            return nil
+            raise TokenMissingScopeError.new(scope)
           end
         end
       end

lib/stytch/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Stytch
-  VERSION = '6.2.0'
+  VERSION = '6.2.1'
 end