Fix for microsoft/TypeScript#11916 (DefinitelyTyped#12425)

* Switch express-serve-static-core to a module

* Add tsconfig to aws-serverless-express

* Switch aws-serverless-express to module

* Fix dangling pointer

* Fix wrong file name

* Add tsconfig.json

* switch seamless-immutable a module

* Add tsconfig.json

* use --strictNullChecks

aws-serverless-express/aws-serverless-express-tests.ts

@@ -1,5 +1,4 @@
-/// <reference path="./aws-serverless-express.d.ts" />
-/// <reference path="../express/express.d.ts"/>
+/// <reference types="express"/>
 
 import * as awsServerlessExpress from 'aws-serverless-express';
 import * as express from 'express';

aws-serverless-express/index.d.ts

@@ -0,0 +1,19 @@
+// Type definitions for aws-serverless-express
+// Project: https://github.com/awslabs/aws-serverless-express
+// Definitions by: Ben Speakman <https://github.com/threesquared>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node"/>
+import * as http from 'http';
+import * as lambda from 'aws-lambda';
+
+export function createServer(
+    requestListener: (request: http.IncomingMessage, response: http.ServerResponse) => http.Server,
+    serverListenCallback?: () => any
+): http.Server;
+
+export function proxy(
+    server: http.Server,
+    event: any,
+    context: lambda.Context
+): void;

aws-serverless-express/tsconfig.json

@@ -0,0 +1,19 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "aws-serverless-express-tests.ts"
+    ]
+}