Revert version of concurrently in dashboard-e2e

Signed-off-by: Aaron Chong <[email protected]>

packages/dashboard-e2e/package.json

@@ -19,7 +19,7 @@
     "@wdio/local-runner": "8.24.6",
     "@wdio/mocha-framework": "8.24.6",
     "@wdio/spec-reporter": "8.24.2",
-    "concurrently": "^8.2.2",
+    "concurrently": "^5.3.0",
     "rmf-dashboard": "workspace:*",
     "serve": "^14.2.1",
     "ts-node": "^10.9.1",

packages/dashboard-e2e/scripts/test-e2e.js

@@ -13,16 +13,11 @@ const wdioArgs = process.argv
   .map((arg) => `"${arg}"`)
   .join(' ');
 
-const { result } = concurrently([...services, `wdio ${wdioArgs}`], {
+concurrently([...services, `wdio ${wdioArgs}`], {
   killOthers: ['success', 'failure'],
   successCondition: 'first',
   prefix: 'none',
+}).catch((e) => {
+  console.error(e);
+  process.exitCode = -1;
 });
-
-result.then(
-  () => {},
-  () => {
-    console.error('End-to-end test failed.');
-    process.exitCode = -1;
-  },
-);