http-middleware

HTTP middleware specification

What

Define standard HTTP middleware specifications. This is intended to increase the interoperability of the HTTP library’s own middleware.

It consists only of the web standards stack and is compatible with many Browsers.

Interface

Middleware interfaces can be defined in TypeScript as follows:

interface Middleware {
  (request: Request, next: Handler): Response | Promise<Response>;
}

interface Handler {
  (request: Request): Response | Promise<Response>;
}

Features

Middleware has the following features:

Compatible with Handler.

Handler is a powerful interface for handling HTTP requests. The Middleware is purely an extension and compatibility with Handler.
It can access to the Request.
It can access the next handler.
It can call the next handler.
It can choose not to call the next handler.
It can access the next handler’s return value (Response).
It can return Response.

License

Released under the MIT license