Express-like-next-api-handler NPM

Express-Like Next.js API Handler

ExpressLikeNextApiHandler is a lightweight (1.3KB) utility that brings Express-like syntax to Next.js API routes. This tool makes it easy to handle requests, manage middleware, and create clean and organized API routes, just like in Express.js.

Features

Lightweight: Just 1.3KB in size.
Express-like Syntax: Use familiar methods like get, post, put, and delete.
Middleware Support: Easily add middleware functions to your API routes.
Middleware Flow Control: If middleware returns false, the request processing will stop immediately.

Installation

To install the package, run:

npm install express-like-next-api-handler

Usage

Here’s how you can use the ExpressLikeNextApiHandler in your Next.js API routes:

1. Basic Setup

Create a new API route in your Next.js project (e.g., pages/api/example.ts):

// pages/api/example.ts

import ExpressLikeNextApiHandler from "express-like-next-api-handler";

const { handler, app } = ExpressLikeNextApiHandler();

app.get((req, res) => {
  res.status(200).json({ message: "GET request handled!" });
});

app.post((req, res) => {
  res.status(200).json({ message: "POST request handled!" });
});

export default handler;

2. Adding Middleware

You can add middleware functions using the use method. If a middleware function returns false, it will stop the execution of further middleware and request handlers:

// pages/api/example.ts

import ExpressLikeNextApiHandler from "express-like-next-api-handler";

const { handler, app } = ExpressLikeNextApiHandler();

app.use((req, res) => {
  console.log("Middleware 1");
  // Continue to the next middleware/handler
});

app.use((req, res) => {
  console.log("Middleware 2");
  // Stop further execution if a condition is met
  if (someCondition) {
    res.status(403).json({ error: "Forbidden" });
    return false; // Stops further middleware and handler execution
  }
});

app.get((req, res) => {
  res.status(200).json({ message: "GET request after middleware!" });
});

export default handler;

3. Handling Different Request Methods

You can define handlers for different HTTP methods (GET, POST, PUT, DELETE):

// pages/api/example.ts

import ExpressLikeNextApiHandler from "express-like-next-api-handler";

const { handler, app } = ExpressLikeNextApiHandler();

app.get((req, res) => {
  res.status(200).json({ message: "GET request!" });
});

app.post((req, res) => {
  res.status(200).json({ message: "POST request!" });
});

app.put((req, res) => {
  res.status(200).json({ message: "PUT request!" });
});

app.delete((req, res) => {
  res.status(200).json({ message: "DELETE request!" });
});

export default handler;

API Reference

`use(middleware: Middleware)`

Description: Adds a middleware function to the API handler. If the middleware returns false, further execution stops.
Parameters:
- middleware ((req: NextApiRequest, res: NextApiResponse) => void | Promise<void> | boolean | Promise<boolean>): Middleware function.

`get(handler: RequestHandler)`

Description: Defines a handler for GET requests.
Parameters:
- handler ((req: NextApiRequest, res: NextApiResponse) => void | Promise<void>): Request handler function.

`post(handler: RequestHandler)`

Description: Defines a handler for POST requests.
Parameters:
- handler ((req: NextApiRequest, res: NextApiResponse) => void | Promise<void>): Request handler function.

`put(handler: RequestHandler)`

Description: Defines a handler for PUT requests.
Parameters:
- handler ((req: NextApiRequest, res: NextApiResponse) => void | Promise<void>): Request handler function.

`delete(handler: RequestHandler)`

Description: Defines a handler for DELETE requests.
Parameters:
- handler ((req: NextApiRequest, res: NextApiResponse) => void | Promise<void>): Request handler function.