Merge pull request #370 from stevengill/327

fixed ack in ExpressReceiver firing twice. Issue #327
slackapi · Jan 13, 2020 · cc4f098 · cc4f098
2 parents d0dce7b + 6dd53ff
commit cc4f098
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/ExpressReceiver.ts b/src/ExpressReceiver.ts
@@ -88,8 +88,9 @@ export default class ExpressReceiver extends EventEmitter implements Receiver {
           clearTimeout(timer);
           timer = undefined;
 
-          if (!response) res.send('');
-          if (typeof response === 'string') {
+          if (!response) {
+            res.send('');
+          } else if (typeof response === 'string') {
             res.send(response);
           } else {
             res.json(response);