✨ Add global error handling

Author: AnandChowdhary

package.json

@@ -36,6 +36,7 @@
   "dependencies": {
     "@types/mustache": "^0.8.32",
     "bcrypt": "^3.0.6",
+    "express-async-handler": "^1.1.4",
     "fs-extra": "^7.0.1",
     "jsonwebtoken": "^8.5.1",
     "marked": "^0.6.2",

src/helpers/errors.ts

@@ -0,0 +1,6 @@
+export const errorHandler = (error: string) => {
+  const errorString = error.toString();
+  if (errorString.startsWith("JsonWebTokenError"))
+    return { status: 401, code: "invalid-token" };
+  return { status: 500, code: "server-error" };
+};

src/index.ts

@@ -1,29 +1,34 @@
-import express from "express";
+import express, { Request, Response, NextFunction } from "express";
 import { PORT } from "./config";
 import { register, verifyEmail } from "./rest/auth";
+import asyncHandler from "express-async-handler";
+import { HTTPError } from "./interfaces/general";
+import { errorHandler } from "./helpers/errors";
 
 const app = express();
 
 app.get("/", (req, res) => res.json({ hello: "world" }));
-app.get("/create-account", async (req, res) => {
-  try {
-    const users = await register(
-      { name: "Anand Chowdhary" },
-      "anand@oswaldlabs.com"
-    );
-    res.json({ success: true, users });
-  } catch (error) {
-    console.log("Error", error);
-    res.json({ success: false });
-  }
+
+app.put("/user", async (req, res) => {
+  const user = req.body;
+  const email = user.email;
+  delete user.email;
+  const users = await register(user, email);
+  res.json({ success: true, users });
 });
-app.get("/verify-email/:token", async (req, res) => {
-  try {
-    res.json({ success: await verifyEmail(req.params.token) });
-  } catch (error) {
-    console.log("Error", error);
-    res.json({ success: false });
-  }
+
+app.get(
+  "/verify-email/:token",
+  asyncHandler(async (req, res) => {
+    await verifyEmail(req.params.token);
+    res.json({ success: true });
+  })
+);
+
+app.use((error: any, req: Request, res: Response, next: NextFunction) => {
+  const response: HTTPError = errorHandler(error.toString());
+  res.status(response.status);
+  res.json({ error: response.code, message: response.message });
 });
 
 app.listen(PORT, () => console.log("App running"));

yarn.lock

@@ -1455,6 +1455,11 @@ expect@^24.7.1:
     jest-message-util "^24.7.1"
     jest-regex-util "^24.3.0"
 
+express-async-handler@^1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/express-async-handler/-/express-async-handler-1.1.4.tgz#225a84908df63b35ae9df94b6f0f1af061266426"
+  integrity sha512-HdmbVF4V4w1q/iz++RV7bUxIeepTukWewiJGkoCKQMtvPF11MLTa7It9PRc/reysXXZSEyD4Pthchju+IUbMiQ==
+
 express@^4.16.4:
   version "4.16.4"
   resolved "https://registry.yarnpkg.com/express/-/express-4.16.4.tgz#fddef61926109e24c515ea97fd2f1bdbf62df12e"