add more tests

.editorconfig

@@ -7,3 +7,7 @@ insert_final_newline = false
 [src/**.ts]
 charset = utf-8
 indent_style = tab
+
+[README.md]
+indent_style = space
+indent_size = 4

.github/workflows/publish-main.yml

@@ -1,4 +1,4 @@
-name: Publish (pre)
+name: Publish (main)
 
 on:
   release:
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: latest
           registry-url: https://registry.npmjs.org/
       - name: Install dependencies
         run: npm ci
@@ -20,11 +20,12 @@ jobs:
       - name: Publish to npmjs
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
-        run: npm publish --tag pre --access public
+        run: npm publish --tag latest --access public
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v3
         with:
+          node-version: latest
           registry-url: https://npm.pkg.github.com/
       - name: Publish to GPR
         env:
           NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
-        run: npm publish --tag pre --access public
+        run: npm publish --tag latest --access public

.nvmrc

@@ -1 +0,0 @@
-v16

MIGRATION.md

@@ -7,7 +7,6 @@ From `v2.x.x` to `v3.x.x`.
 
 - [Update Router](#update-router)
 - [Handlers](#handlers)
-- [Fetch](#fetch--routerhandle)
 
 
 ## Update Router
@@ -15,7 +14,7 @@ From `v2.x.x` to `v3.x.x`.
 Update to the latest version version of the router.
 
 ```bash
-npm i -D @tsndr/cloudflare-worker-router
+npm i -D @tsndr/cloudflare-worker-router@^3
 ```
 
 

README.md

@@ -33,6 +33,10 @@ Migrating from `v2.x.x`, check out the [Migration Guide](MIGRATION.md).
 ```typescript
 import { Router } from '@tsndr/cloudflare-worker-router'
 
+// Env Types
+export type Var<T = string> = T
+export type Secret<T = string> = T
+
 export type Env = {
     // Example binding to KV. Learn more at https://developers.cloudflare.com/workers/runtime-apis/kv/
     // MY_KV_NAMESPACE: KVNamespace
@@ -43,11 +47,23 @@ export type Env = {
     // Example binding to R2. Learn more at https://developers.cloudflare.com/workers/runtime-apis/r2/
     // MY_BUCKET: R2Bucket
 
-    SECRET_TOKEN: string
+    ENVIRONMENT: Var<'dev' | 'prod'>
+
+    SECRET_TOKEN: Secret
 }
 
-// Initialize router
+// Request Extension
-const router = new Router<Env>()
+export type ExtReq = {
+    userId?: number
+}
+
+// Context Extension
+export type ExtCtx = {
+    //sentry?: Toucan
+}
+
+// Initialize Router
+const router = new Router<Env, ExtCtx, ExtReq>()
 
 // Enabling build in CORS support
 router.cors()
@@ -211,10 +227,12 @@ If enabled will overwrite other `OPTIONS` requests.
 #### `config` (object, optional)
 
 Key                        | Type       | Default Value
----------------------- | --------- | -------------
+-------------------------- | ---------- | -------------
 `allowOrigin`              | `string`   | `*`
 `allowMethods`             | `string`   | `*`
 `allowHeaders`             | `string`   | `*`
+`allowCredentials`         | `boolean`  | `undefined`
+`vary`                     | `string`   | `undefined`
 `maxAge`                   | `integer`  | `86400`
 `optionsSuccessStatus`     | `integer`  | `204`
 
@@ -287,6 +305,10 @@ npm i -D @tsndr/cloudflare-worker-router
 ```typescript
 import { Router } from '@tsndr/cloudflare-worker-router'
 
+// Env Types
+export type Var<T = string> = T
+export type Secret<T = string> = T
+
 export type Env = {
   // Example binding to KV. Learn more at https://developers.cloudflare.com/workers/runtime-apis/kv/
   // MY_KV_NAMESPACE: KVNamespace
@@ -296,25 +318,50 @@ export type Env = {
   //
   // Example binding to R2. Learn more at https://developers.cloudflare.com/workers/runtime-apis/r2/
   // MY_BUCKET: R2Bucket
+  //
+  // Example Variable
+  // ENVIRONMENT: Var<'dev' | 'prod'>
+  //
+  // Example Secret
+  // JWT_SECRET: Secret
 }
 
-const router = new Router<Env>()
+// Request Extension
+export type ExtReq = {
+  userId?: number
+}
+
+// Context Extension
+export type ExtCtx = {
+  //sentry?: Toucan
+}
+
+// Handler Type
+export type Handler = RouterHandler<Env, ExtCtx, ExtReq>
+
+// Initialize Router
+const router = new Router<Env, ExtCtx, ExtReq>()
+
+// Enable Debug Mode
+router.debug()
+
+// Enabling build in CORS support
+//router.cors()
 
 /// Example Route
 //
 // router.get('/hi', async () => {
 //   return new Response('Hello World')
-//})
+// })
 
 
 /// Example Route for splitting into multiple files
 //
-// const hiHandler: RouteHandler<Env> = async () => {
+// const helloHandler: Handler = async () => {
 //    return new Response('Hello World')
 // }
 //
-// router.get('/hi', hiHandler)
+// router.get('/hellow', helloHandler)
-
 
 // TODO: add your routes here
 
@@ -336,6 +383,12 @@ import { Router } from '@tsndr/cloudflare-worker-router'
 
 const router = new Router()
 
+// Enable Debug Mode
+//router.debug()
+
+// Enabling build in CORS support
+//router.cors()
+
 /// Example Route
 //
 // router.get('/hi', async () => {

jest.config.ts

@@ -0,0 +1,9 @@
+import type { Config } from 'jest'
+
+const config: Config = {
+	preset: 'ts-jest',
+	testEnvironment: 'node',
+	verbose: true
+}
+
+export default config

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tsndr/cloudflare-worker-router",
-  "version": "3.0.0-10",
+  "version": "3.1.3",
   "description": "",
   "main": "index.js",
   "types": "index.d.ts",
@@ -31,7 +31,12 @@
   },
   "homepage": "https://github.com/tsndr/cloudflare-worker-router#readme",
   "devDependencies": {
-    "@cloudflare/workers-types": "^4.20230115.0",
+    "@cloudflare/workers-types": "^4.20231025.0",
-    "typescript": "^4.9.5"
+    "@jest/globals": "^29.7.0",
+    "@types/jest": "^29.5.11",
+    "jest": "^29.7.0",
+    "ts-jest": "^29.1.1",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.2.2"
   }
 }

src/index.spec.ts

@@ -0,0 +1,366 @@
+import { describe, expect, test } from '@jest/globals'
+import { Router } from '.'
+
+describe('Router', () => {
+	test('use', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/')
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.use(() => testResponse)).toBeInstanceOf(Router)
+
+		router.get('/', () => new Response('failed'))
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('delete', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'DELETE' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.delete('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('get', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'GET' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.get('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('head', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'HEAD' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.head('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('options', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'OPTIONS' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.options('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('patch', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'PATCH' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.patch('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('post', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'POST' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.post('/test', () => testResponse)).toBeInstanceOf(Router)
+		expect(router.post('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('put', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'PUT' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.put('/test', () => testResponse)).toBeInstanceOf(Router)
+		expect(router.put('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('any', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'POST' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.any('/test', () => testResponse)).toBeInstanceOf(Router)
+		expect(router.any('/', () => testResponse)).toBeInstanceOf(Router)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('cors', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/', { method: 'GET' })
+		const testOptionsRequest = new Request('https://example.com/', { method: 'OPTIONS' })
+		const testResponse = new Response('success', { status: 200 })
+
+		expect(router.cors()).toBeInstanceOf(Router)
+
+		router.get('/', () => testResponse)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toBe(200)
+
+		expect(response.headers.get('Access-Control-Allow-Origin')).toBe('*')
+		expect(response.headers.get('Access-Control-Allow-Methods')).toBe('*')
+		expect(response.headers.get('Access-Control-Allow-Headers')).toBe('*')
+		expect(response.headers.get('Access-Control-Allow-Credentials')).toBe(null)
+		expect(response.headers.get('vary')).toBe(null)
+		expect(response.headers.get('Access-Control-Max-Age')).toBe('86400')
+
+		const optionsRes = await router.handle(testOptionsRequest, {})
+
+		expect(optionsRes.status).toBe(204)
+		expect(optionsRes.headers.get('Access-Control-Allow-Origin')).toBe('*')
+		expect(optionsRes.headers.get('Access-Control-Allow-Methods')).toBe('*')
+		expect(optionsRes.headers.get('Access-Control-Allow-Headers')).toBe('*')
+		expect(optionsRes.headers.get('Access-Control-Allow-Credentials')).toBe(null)
+		expect(optionsRes.headers.get('vary')).toBe(null)
+		expect(optionsRes.headers.get('Access-Control-Max-Age')).toBe('86400')
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('params', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/bar/foo')
+
+		router.get('/:foo/:bar', ({ req }) => {
+			return Response.json(req.params)
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(200)
+
+		expect(await response.json()).toMatchObject({ foo: 'bar', bar: 'foo' })
+	})
+
+	test('query', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/?foo=bar&bar=foo')
+
+		router.get('/', ({ req }) => {
+			return Response.json(req.query)
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(200)
+
+		expect(await response.json()).toMatchObject({ foo: 'bar', bar: 'foo' })
+	})
+
+	test('404', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/')
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(404)
+	})
+
+	test('debug mode', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/')
+
+		router.debug()
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(404)
+
+		expect(await response.text()).toBe('Route not found!')
+	})
+
+	test('handler no response', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/')
+
+		router.debug()
+
+		router.get('/', () => {})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(404)
+
+		expect(await response.text()).toBe('Handler did not return a Response!')
+	})
+
+	test('wildcard', async () => {
+		const router = new Router()
+		const testRequest = new Request('https://example.com/foo/bar')
+		const testResponse = new Response('success', { status: 200 })
+
+		router.get('*', () => testResponse)
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('bearer', async () => {
+		const router = new Router()
+		const testToken = 'super-secret-token'
+		const testRequest = new Request('https://example.com/', { headers: { 'Authorization': `Bearer ${testToken}` }})
+
+		router.get('/', ({ req }) => new Response(req.bearer()))
+
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(200)
+
+		expect(await response.text()).toBe(testToken)
+	})
+})
+
+describe('Middleware', () => {
+	const router = new Router()
+	const testHandlerSuccess = () => new Response('success', { status: 200 })
+	const testHandlerContinue = () => {}
+	const testHandlerFailed = () => new Response('failed', { status: 403 })
+
+	router.get('/success', testHandlerContinue, testHandlerSuccess)
+	router.get('/failed', testHandlerFailed, testHandlerSuccess)
+
+	test('continue', async () => {
+		const testRequest = new Request('https://example.com/success')
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(200)
+
+		expect(await response.text()).toBe('success')
+	})
+
+	test('block', async () => {
+		const testRequest = new Request('https://example.com/failed')
+		const response = await router.handle(testRequest, {})
+
+		expect(response.status).toEqual(403)
+
+		expect(await response.text()).toBe('failed')
+	})
+})
+
+describe('Body', () => {
+
+	test('text then text', async () => {
+		const router = new Router()
+		const testText = "lorem ipsum dolor sit amet"
+		const testRequest = new Request('https://example.com/', { method: 'POST', body: testText })
+
+		router.post('/', async ({ req }) => {
+			return Response.json({
+				text: await req.text(),
+				text2: await req.text()
+			})
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(await response.json()).toMatchObject({ text: testText, text2: testText })
+	})
+
+	test('json then json', async () => {
+		const router = new Router()
+		const testObject = { text: 'cloudflare-worker-router', binary: true, amount: 17 }
+		const testJson = JSON.stringify(testObject)
+		const testRequest = new Request('https://example.com/', { method: 'POST', body: testJson })
+
+		router.post('/', async ({ req }) => {
+			return Response.json({
+				json: await req.json(),
+				json2: await req.json()
+			})
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(await response.json()).toMatchObject({ json: testObject, json2: testObject })
+	})
+
+	test('text then json', async () => {
+		const router = new Router()
+		const testObject = { text: 'cloudflare-worker-router', binary: true, amount: 17 }
+		const testJson = JSON.stringify(testObject)
+		const testRequest = new Request('https://example.com/', { method: 'POST', body: testJson })
+
+		router.post('/', async ({ req }) => {
+			return Response.json({
+				text: await req.text(),
+				json: await req.json()
+			})
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(await response.json()).toMatchObject({ text: testJson, json: testObject })
+	})
+
+	test('json then text', async () => {
+		const router = new Router()
+		const testObject = { text: 'cloudflare-worker-router', binary: true, amount: 17 }
+		const testJson = JSON.stringify(testObject)
+		const testRequest = new Request('https://example.com/', { method: 'POST', body: testJson })
+
+		router.post('/', async ({ req }) => {
+			return Response.json({
+				json: await req.json(),
+				text: await req.text()
+			})
+		})
+
+		const response = await router.handle(testRequest, {})
+
+		expect(await response.json()).toMatchObject({ text: testJson, json: testObject })
+	})
+})

src/index.ts

@@ -6,10 +6,10 @@
 * @property {string} url URL String
 * @property {RouterHandler[]} handlers Array of handler functions
 */
-export type Route<TEnv, TExt> = {
+export type Route<Env, CtxExt, ReqExt> = {
 	method: string
 	url: string
-	handlers: RouterHandler<TEnv, TExt>[]
+	handlers: RouterHandler<Env, CtxExt, ReqExt>[]
 }
 
 /**
@@ -20,9 +20,9 @@ export type Route<TEnv, TExt> = {
 * @property {RouterRequest} req Request Object
 * @property {ExecutionContext} ctx Context Object
 */
-export type RouterContext<TEnv = any, TExt = any> = {
+export type RouterContext<Env = any, CtxExt = {}, ReqExt = {}> = CtxExt & {
-	env: TEnv
+	env: Env
-	req: RouterRequest<TExt>
+	req: RouterRequest<ReqExt>
 	dbg: boolean
 	ctx?: ExecutionContext
 }
@@ -36,9 +36,10 @@ export type RouterContext<TEnv = any, TExt = any> = {
 * @property {RouterRequestParams} params Object containing all parameters defined in the url string
 * @property {RouterRequestQuery} query Object containing all query parameters
 * @property {Headers} headers Request headers object
+* @property {Request} raw Raw Request Object
 * @property {IncomingRequestCfProperties} [cf] object containing custom Cloudflare properties. (https://developers.cloudflare.com/workers/examples/accessing-the-cloudflare-object)
 */
-export type RouterRequest<TExt> = {
+export type RouterRequest<ReqExt> = ReqExt & {
 	url: string
 	method: string
 	params: RouterRequestParams
@@ -50,9 +51,9 @@ export type RouterRequest<TExt> = {
 	json<T>(): Promise<T>
 	formData(): Promise<FormData>
 	blob(): Promise<Blob>
-	bearer: () => string
+	bearer(): string | undefined
 	cf?: IncomingRequestCfProperties
-} & TExt
+}
 
 /**
 * Request Parameters
@@ -79,8 +80,8 @@ export type RouterRequestQuery = {
 * @param {RouterContext} ctx
 * @returns {Promise<Response | void> Response | void}
 */
-export type RouterHandler<TEnv = any, TExt = any> = {
+export type RouterHandler<Env = any, CtxExt = {}, ReqExt = {}> = {
-	(ctx: RouterContext<TEnv, TExt>): Promise<Response | void> | Response | void
+	(ctx: RouterContext<Env, CtxExt, ReqExt>): Promise<Response | void> | Response | void
 }
 
 /**
@@ -90,6 +91,8 @@ export type RouterHandler<TEnv = any, TExt = any> = {
 * @property {string} [allowOrigin="*"] Access-Control-Allow-Origin (default: `*`)
 * @property {string} [allowMethods="*"] Access-Control-Allow-Methods (default: `*`)
 * @property {string} [allowHeaders="*"] Access-Control-Allow-Headers (default: `*`)
+* @property {boolean} [allowCredentials="true"] Access-Control-Allow-Credentials (default: undefined)
+* @property {string} [vary="origin"] vary (default: undefined)
 * @property {number} [maxAge=86400] Access-Control-Max-Age (default: `86400`)
 * @property {number} [optionsSuccessStatus=204] Return status code for OPTIONS request (default: `204`)
 */
@@ -97,17 +100,27 @@ export type RouterCorsConfig = {
 	allowOrigin?: string
 	allowMethods?: string
 	allowHeaders?: string
+	allowCredentials?: boolean
+	vary?: string
 	maxAge?: number
 	optionsSuccessStatus?: number
 }
 
+export type RouterBuffer = {
+	arrayBuffer?: ArrayBuffer
+	text?: string
+	json?: any
+	formData?: FormData
+	blob?: Blob
+}
+
 /**
 * Router
 *
 * @public
 * @class
 */
-export class Router<TEnv = any, TExt = any> {
+export class Router<Env = any, CtxExt = {}, ReqExt = {}> {
 
 	/**
 	* Router Array
@@ -115,7 +128,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @protected
 	* @type {Route[]}
 	*/
-	protected routes: Route<TEnv, TExt>[] = []
+	protected routes: Route<Env, CtxExt, ReqExt>[] = []
 
 	/**
 	* Global Handlers
@@ -123,7 +136,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @protected
 	* @type {RouterHandler[]}
 	*/
-	protected globalHandlers: RouterHandler<TEnv, TExt>[] = []
+	protected globalHandlers: RouterHandler<Env, CtxExt, ReqExt>[] = []
 
 	/**
 	* Debug Mode
@@ -155,7 +168,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public use(...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public use(...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		for (let handler of handlers) {
 			this.globalHandlers.push(handler)
 		}
@@ -169,7 +182,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public connect(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public connect(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('CONNECT', url, handlers)
 	}
 
@@ -180,7 +193,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public delete(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public delete(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('DELETE', url, handlers)
 	}
 
@@ -191,7 +204,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public get(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public get(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('GET', url, handlers)
 	}
 
@@ -202,7 +215,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public head(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public head(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('HEAD', url, handlers)
 	}
 
@@ -213,7 +226,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public options(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public options(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('OPTIONS', url, handlers)
 	}
 
@@ -224,7 +237,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public patch(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public patch(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('PATCH', url, handlers)
 	}
 
@@ -235,7 +248,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public post(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public post(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('POST', url, handlers)
 	}
 
@@ -246,7 +259,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public put(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public put(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('PUT', url, handlers)
 	}
 
@@ -257,7 +270,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public trace(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public trace(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('TRACE', url, handlers)
 	}
 
@@ -268,7 +281,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param  {RouterHandler[]} handlers
 	* @returns {Router}
 	*/
-	public any(url: string, ...handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	public any(url: string, ...handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		return this.register('*', url, handlers)
 	}
 
@@ -278,7 +291,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param {boolean} [state=true] Whether to turn on or off debug mode (default: true)
 	* @returns {Router}
 	*/
-	public debug(state: boolean = true): Router<TEnv, TExt> {
+	public debug(state: boolean = true): Router<Env, CtxExt, ReqExt> {
 		this.debugMode = state
 		return this
 	}
@@ -289,12 +302,14 @@ export class Router<TEnv = any, TExt = any> {
 	* @param {RouterCorsConfig} [config]
 	* @returns {Router}
 	*/
-	public cors(config?: RouterCorsConfig): Router<TEnv, TExt> {
+	public cors(config?: RouterCorsConfig): Router<Env, CtxExt, ReqExt> {
 		this.corsEnabled = true
 		this.corsConfig = {
 			allowOrigin: config?.allowOrigin ?? '*',
 			allowMethods: config?.allowMethods ?? '*',
 			allowHeaders: config?.allowHeaders ?? '*',
+			allowCredentials: config?.allowCredentials ?? undefined,
+			vary: config?.vary ?? undefined,
 			maxAge: config?.maxAge ?? 86400,
 			optionsSuccessStatus: config?.optionsSuccessStatus ?? 204
 		}
@@ -308,6 +323,10 @@ export class Router<TEnv = any, TExt = any> {
 			headers.set('Access-Control-Allow-Methods', this.corsConfig.allowMethods)
 		if (this.corsConfig.allowHeaders && !headers.has('Access-Control-Allow-Headers'))
 			headers.set('Access-Control-Allow-Headers', this.corsConfig.allowHeaders)
+		if (this.corsConfig.allowCredentials && !headers.has('Access-Control-Allow-Credentials'))
+			headers.set('Access-Control-Allow-Credentials', this.corsConfig.allowCredentials.toString())
+		if (this.corsConfig.vary && !headers.has('vary'))
+			headers.set('vary', this.corsConfig.vary.toString())
 		if (this.corsConfig.maxAge && !headers.has('Access-Control-Max-Age'))
 			headers.set('Access-Control-Max-Age', this.corsConfig.maxAge.toString())
 		return headers
@@ -322,7 +341,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param {RouterHandler[]} handlers Arrar of handler functions
 	* @returns {Router}
 	*/
-	private register(method: string, url: string, handlers: RouterHandler<TEnv, TExt>[]): Router<TEnv, TExt> {
+	private register(method: string, url: string, handlers: RouterHandler<Env, CtxExt, ReqExt>[]): Router<Env, CtxExt, ReqExt> {
 		this.routes.push({
 			method,
 			url,
@@ -339,7 +358,7 @@ export class Router<TEnv = any, TExt = any> {
 	* @param {RouterRequest} request
 	* @returns {Route | undefined}
 	*/
-	private getRoute(request: RouterRequest<TExt>): Route<TEnv, TExt> | undefined {
+	private getRoute(request: RouterRequest<ReqExt>): Route<Env, CtxExt, ReqExt> | undefined {
 		const url = new URL(request.url)
 		const pathArr = url.pathname.split('/').filter(i => i)
 
@@ -377,13 +396,15 @@ export class Router<TEnv = any, TExt = any> {
 	* Handle requests
 	*
 	* @param {Request} request
-	* @param {TEnv} env
+	* @param {Env} env
-	* @param {TExt} [ext]
+	* @param {CtxExt} [ctxExt]
+	* @param {ReqExt} [reqExt]
 	* @returns {Promise<Response>}
 	*/
-	public async handle(request: Request, env: TEnv, ctx?: ExecutionContext, ext?: TExt): Promise<Response> {
+	public async handle(request: Request, env: Env, ctx?: ExecutionContext, ctxExt?: CtxExt, reqExt?: ReqExt): Promise<Response> {
+		const buffer: RouterBuffer = {}
 		const req = {
-			...(ext ?? {}),
+			...(reqExt ?? {}),
 			method: request.method,
 			headers: request.headers,
 			url: request.url,
@@ -391,13 +412,13 @@ export class Router<TEnv = any, TExt = any> {
 			raw: request,
 			params: {},
 			query: {},
-			arrayBuffer: request.arrayBuffer,
+			arrayBuffer: async (): Promise<ArrayBuffer> => buffer.arrayBuffer ? buffer.arrayBuffer : buffer.arrayBuffer = await request.clone().arrayBuffer(),
-			text: request.text,
+			text: async (): Promise<string> => buffer.text ? buffer.text : buffer.text = await request.clone().text(),
-			json: <T>(): Promise<T> => request.json<T>(),
+			json: async <T>(): Promise<T> => buffer.json ? buffer.json : buffer.json = await request.clone().json<T>(),
-			formData: request.formData,
+			formData: async (): Promise<FormData> => buffer.formData ? buffer.formData : buffer.formData = await request.clone().formData(),
-			blob: request.blob,
+			blob: async (): Promise<Blob> => buffer.blob ? buffer.blob : buffer.blob = await request.clone().blob(),
-			bearer: () => request.headers.get('Authorization')?.replace(/^(B|b)earer /, '').trim() ?? '',
+			bearer: () => request.headers.get('Authorization')?.replace(/^(B|b)earer /, '').trim()
-		} as RouterRequest<TExt>
+		} as RouterRequest<ReqExt>
 
 		if (this.corsEnabled && req.method === 'OPTIONS') {
 			return new Response(null, {
@@ -417,7 +438,15 @@ export class Router<TEnv = any, TExt = any> {
 		let response: Response | undefined
 
 		for (const handler of handlers) {
-			const res = await handler({ env, req, dbg, ctx })
+			const context = {
+				...(ctxExt ?? {}),
+				env,
+				req,
+				dbg,
+				ctx
+			} as RouterContext<Env, CtxExt, ReqExt>
+
+			const res = await handler(context)
 
 			if (res) {
 				response = res
@@ -428,8 +457,10 @@ export class Router<TEnv = any, TExt = any> {
 		if (!response)
 			return new Response(this.debugMode ? 'Handler did not return a Response!' : null, { status: 404 })
 
-		if (this.corsEnabled)
+		if (this.corsEnabled) {
+			response = new Response(response.body, response)
 			this.setCorsHeaders(response.headers)
+		}
 
 		return response
 	}