Better async error handling

modules/utils/asyncHandler.js

@@ -0,0 +1,14 @@
+/**
+ * Useful for wrapping `async` request handlers so they
+ * automatically propagate errors.
+ */
+export default function asyncHandler(handler) {
+  return (req, res, next) => {
+    Promise.resolve(handler(req, res, next)).catch(error => {
+      console.error(`Unexpected error in ${handler.name}!`);
+      console.error(error);
+
+      next(error);
+    });
+  };
+}