add warnjs

Signed-off-by: Manuel <[email protected]>

Author: mtrezza

spec/ParseUser.spec.js

@@ -4432,7 +4432,7 @@ describe('allowClientClassCreation option', () => {
 });
 
 fdescribe('log levels', () => {
-  const logLevels = [undefined, 'silent', 'info', 'error'];
+  const logLevels = [undefined, 'silent', 'info', 'warn', 'error'];
 
   it_id('bd3929eb-85dd-4955-ac1d-5ba59ab1b9a3')(it)('should use log level for username already exists error', async () => {
     for (const logLevel of logLevels) {