# Migration Guide
From `v1.x.x` to `v2.x.x`.
## Contents
- [Import / Require](#import--require)
- [Routes](#routes)
- [Fetch](#fetch)
## Import / Require
### Before
```javascript
const Router = require('@tsndr/cloudflare-worker-router')
```
### After
```javascript
import Router from '@tsndr/cloudflare-worker-router'
```
## Routes
Just add curly braces.
### Before
```javascript
// Register global middleware
router.use((req, res, next) => {
res.headers.set('X-Global-Middlewares', 'true')
next()
})
// Simple get
router.get('/user', (req, res) => {
res.body = {
data: {
id: 1,
name: 'John Doe'
}
}
})
```
### After
// Register global middleware
router.use(({ req, res, next }) => {
res.headers.set('X-Global-Middlewares', 'true')
next()
})
// Simple get
router.get('/user', ({ req, res }) => {
res.body = {
data: {
id: 1,
name: 'John Doe'
}
}
})
## Fetch / `router.handle()`
Be aware that with `v2.0.0` the parameters of `router.handle()` changed.
### Before
`router.handle(request, extend = {})`
```javascript
// Listen Cloudflare Workers Fetch Event
addEventListener('fetch', event => {
event.respondWith(router.handle(event.request))
})
```
### After
`router.handle(env, request, extend = {})`
// Listen Cloudflare Workers Fetch Event
export default {
async fetch(request, env, ctx) {
return router.handle(env, request)
}
}