klass -> className

app/javascript/packs/react-app/components/misc/flash_alerts.jsx

@@ -5,7 +5,7 @@ import {Message} from 'semantic-ui-react';
 class FlashAlerts extends React.Component {
   render() {
     let alerts = this.props.alerts.map((alert, i) => {
-      return <Alert key={i} klass={alert.klass} message={alert.message} />;
+      return <Alert key={i} className={alert.className} message={alert.message} />;
     });
     return alerts;
   }
@@ -25,7 +25,7 @@ export class Alert extends React.Component {
     if (this.state.visible) {
       return (
         <Message
-          className={this.props.klass}
+          className={this.props.className}
           onDismiss={this.onDismiss}
           content={this.props.message}
           {...this.props}