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next-wares

v0.0.3

Published

Tiny middleware-helper for nextjs (app-router).

Downloads

205

Readme

next-wares

Tiny middleware-helper for nextjs (app-router).

CI npm version npm bundle size codecov

Features

  • Design for Simple and easy to use.
  • Global middleware support (via middleware.(ts|js)).
  • Inline middleware support.
  • Esm/cjs support.

Install

npm i next-wares

Usage

Global Middlewares

Nextjs use global middlware via middleware.(ts|js). see => https://nextjs.org/docs/app/building-your-application/routing/middleware

// middleware.ts

import { NextResponse, URLPattern } from "next/server";
import type { NextRequest } from "next/server";
import { wares } from "next-wares";

export default wares<NextRequest>(NextResponse, URLPattern, {

  // match all startsWith /api
  "/api/*": async (req, next) => {
    const res = await next();
    res.headers.set("api-header", "foobar");
    return res;
  },

  // match for file /blog/[...slug]/page.ts
  "/blog/:slug*": (req, next) => {
    // some code
    return next();
  },

  // match for /api/about with multiple wares.
  "/api/about": [
    (req, next) => {
      // some code
      return next();
    },
    (req, next) => {
      // some code
      return next();
    }
  ]
})

Inline Middlewares

Support only route-handlers. see => https://nextjs.org/docs/app/building-your-application/routing/route-handlers

import { handler } from "next-wares";
import type { Handler } from "next-wares";

const validate: Handler = (req, next) => {
  // some code validate body.

  return next();
}

// example for POST methods with validate.
export const POST = handler(
  validate,
  (req) => {
    return Response.json({ name: "john" })
  }
)

// example GET with pass params.
export const GET = handler(
  (req, next, { params }: { params: Promise<{ slug: string }> }) => {
    const slug = (await params).slug;
    return Response.json({ slug })
  }
)