Add express-async-wrap (#35030)

* adds types for express-async-wrap

* Adds express-async-wrap properly

* Adds typescript version to express-async-wrap

* removes unnecessary generics

* removes unnecessary comment

* fix: now uses export default

types/express-async-wrap/express-async-wrap-tests.ts

@@ -0,0 +1,17 @@
+import asyncWrap from 'express-async-wrap';
+import express = require('express');
+
+const app = express();
+
+const promise = new Promise(resolve => {
+  setTimeout(() => {
+    resolve("Success");
+  }, 250);
+});
+
+const asyncHandler = async (_: express.Request, res: express.Response) => {
+  await promise;
+  res.send('promise awaited');
+};
+
+app.get('/', asyncWrap(asyncHandler));

types/express-async-wrap/index.d.ts

@@ -0,0 +1,18 @@
+// Type definitions for express-async-wrap 1.0
+// Project: https://github.com/Greenfields/express-async-wrap#readme
+// Definitions by: Remy Oudemans <https://github.com/remyoudemans>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.7
+
+import { NextFunction } from 'connect';
+import { Response, RequestHandler, ErrorRequestHandler, Request } from 'express-serve-static-core';
+
+declare function asyncWrap(
+  handler: (req: Request, res: Response, next: NextFunction) => Promise<void>
+): RequestHandler;
+
+declare function asyncWrap(
+  handler: (err: any, req: Request, res: Response, next: NextFunction) => Promise<void>,
+): ErrorRequestHandler;
+
+export default asyncWrap;

types/express-async-wrap/tsconfig.json

@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "express-async-wrap-tests.ts"
+    ]
+}

types/express-async-wrap/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }