feat(errorhandler): add errorhandler middleware

package.json

@@ -36,6 +36,7 @@
     "@types/cookie-parser": "^1.4.1",
     "@types/cors": "^2.8.3",
     "@types/csurf": "^1.9.35",
+    "@types/errorhandler": "0.0.32",
     "@types/helmet": "0.0.37",
     "@types/mocha": "^2.2.44",
     "@types/node": "^8.0.53",

src/errorhandler/index.spec.ts

@@ -0,0 +1,36 @@
+import { ErrorHandlerMiddleware } from './index';
+import { expect } from 'chai';
+
+describe('ErrorHandlerMiddleware', () => {
+    let middleware: ErrorHandlerMiddleware;
+    describe('properly configured', () => {
+        beforeEach(() => {
+            ErrorHandlerMiddleware.configure({
+                log: true,
+            });
+            middleware = new ErrorHandlerMiddleware();
+        });
+
+        it('should be defined', () => {
+            expect(middleware).to.not.be.undefined;
+        });
+
+        it('should have a function called resolve', () => {
+            expect(middleware.resolve).to.be.instanceof(Function);
+        });
+
+        it('should should return a middleware from calling resolve', () => {
+            expect(middleware.resolve()).to.be.an.instanceof(Function);
+        });
+        afterEach(() => {
+            ErrorHandlerMiddleware.configure(undefined);
+        });
+    });
+
+    describe('not configured', () => {
+        middleware = new ErrorHandlerMiddleware();
+        it('should should return a middleware from calling resolve', () => {
+            expect(middleware.resolve()).to.be.an.instanceof(Function);
+        });
+    });
+});

src/errorhandler/index.ts

@@ -0,0 +1,23 @@
+import * as errorhandler from 'errorhandler';
+
+import { ErrorRequestHandler, RequestHandler } from 'express';
+import { Middleware, NestMiddleware } from '@nestjs/common';
+
+@Middleware()
+export class ErrorHandlerMiddleware implements NestMiddleware {
+
+    // DELETE THESE LINES IF MIDDLEWARE DOES NOT TAKE OPTIONS
+    public static configure(opts: errorhandler.Options) {
+        this.options = opts;
+    }
+
+    private static options: errorhandler.Options;
+
+    public resolve(...args: any[]): RequestHandler {
+        if (ErrorHandlerMiddleware.options) {
+            return errorhandler(ErrorHandlerMiddleware.options) as any as RequestHandler;
+        } else {
+            return errorhandler() as any as RequestHandler;
+        }
+    }
+}

src/errorhandler/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "@nest-middlewares/errorhandler",
+  "version": "1.0.0",
+  "description": "NestJS middleware for Error Handler",
+  "main": "index",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/wbhob/nest-middlewares.git"
+  },
+  "keywords": [
+    "nest",
+    "middlewares",
+    "express",
+    "node"
+  ],
+  "author": "Wilson Hobbs <wilsonhobbs1@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/wbhob/nest-middlewares/issues"
+  },
+  "homepage": "https://github.com/wbhob/nest-middlewares#readme",
+  "peerDependencies": {
+    "@nestjs/common": "^4.0.0"
+  },
+  "dependencies": {
+    "errorhandler": "^1.5.0"
+  }
+}