Use async/await in controllers

server/middlewares/async.ts

@@ -0,0 +1,16 @@
+import { Request, Response, NextFunction } from 'express'
+
+// Syntactic sugar to avoid try/catch in express controllers
+// Thanks: https://medium.com/@Abazhenov/using-async-await-in-express-with-node-8-b8af872c0016
+function asyncMiddleware (fn: (req: Request, res: Response, next: NextFunction) => Promise<any>) {
+  return (req: Request, res: Response, next: NextFunction) => {
+    return Promise.resolve(fn(req, res, next))
+      .catch(next)
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  asyncMiddleware
+}