README.md

@daveyplate/next-cors-middleware

Installation

To install the package, run:

npm install @daveyplate/next-cors-middleware

Middleware Usage

To use the middleware in your Next.js App, follow these steps:

1. Create a middleware.js file in the root of your project:

   import { NextResponse } from 'next/server'
   import { nextCors } from '@daveyplate/next-cors-middleware'
   
   export function middleware(request) {
       const response = nextCors({
           request,
           allowedOrigins: ['https://example.com', 'https://anotherdomain.com'],
       })
   
       if (response) {
           return response
       }
   
       // Your middleware logic here
       return NextResponse.next()
   }

2. Customize the allowedOrigins array with the domains you want to allow.

3. Optionally, you can pass custom CORS options:

   const customCorsOptions = {
       'Access-Control-Allow-Methods': 'GET, POST',
       'Access-Control-Allow-Headers': 'Content-Type, Authorization, X-Custom-Header',
   };
   
   export function middleware(request) {
       const response = nextCors({
           request,
           allowedOrigins: ['https://example.com'],
           corsOptions: customCorsOptions,
       });
   
       if (response) {
           return response;
       }
   
       // Your middleware logic here
       return NextResponse.next();
   }

That's it! Your Next.js App Router now supports CORS.