Create unhandledRejection.js

events/unhandledRejection.js

@@ -0,0 +1,10 @@
+process.on('unhandledRejection', error => {
+  // Will print "unhandledRejection err is not defined"
+  console.log('unhandledRejection', error.message);
+});
+
+new Promise((_, reject) => reject(new Error('woops'))).
+  catch(error => {
+    // Will not execute
+    console.log('caught', err.message);
+  });