Merge pull request #1010 from AzureAD/multiple-instances

Multiple instances

Author: sameerag

lib/msal-core/src/ServerRequestParameters.ts

@@ -137,7 +137,7 @@ export class ServerRequestParameters {
      * @param request
      */
     private validatePromptParameter (prompt: string) {
-        if (!([PromptState.LOGIN, PromptState.SELECT_ACCOUNT, PromptState.CONSENT, PromptState.NONE].indexOf(prompt) >= 0)) {
+        if ([PromptState.LOGIN, PromptState.SELECT_ACCOUNT, PromptState.CONSENT, PromptState.NONE].indexOf(prompt) < 0) {
             throw ClientConfigurationError.createInvalidPromptError(prompt);
         }
     }