diff --git a/benchmark/regexp_cve.mjs b/benchmark/regexp_cve.mjs
new file mode 100644
index 0000000..6ca50fb
--- /dev/null
+++ b/benchmark/regexp_cve.mjs
@@ -0,0 +1,19 @@
+import { printTime } from './utils.mjs'
+
+var arg = "";
+for (var i = 0; i < 1000000; i++) {
+  arg += "\\";
+}
+arg += "◎";
+
+let s1 = process.hrtime.bigint()
+let s2 = process.hrtime.bigint()
+
+arg = arg.replace(/(?=\\*?)"/g, '$1$1\\"');
+arg = arg.replace(/(?=\\*?)$/, '$1$1');
+
+let s3 = process.hrtime.bigint()
+
+let time = s3 - s2 - (s2 - s1)
+
+printTime(time)
diff --git a/benchmark/router_v2_compile.mjs b/benchmark/router_v2_compile.mjs
index 1533eec..cf93c4c 100644
--- a/benchmark/router_v2_compile.mjs
+++ b/benchmark/router_v2_compile.mjs
@@ -1,13 +1,16 @@
-import { compilePaths } from "../router_v2.mjs"
+import { FlaskaRouter } from "../flaska.mjs"
 import { printTime } from './utils.mjs'
 import * as consts from './const.js'
 
 let paths = consts.allManyRoutes.map(x => ({ path: x }))
 
+let router = new FlaskaRouter()
+router.paths = paths
+
 let s1 = process.hrtime.bigint()
 let s2 = process.hrtime.bigint()
 
-compilePaths(paths)
+router.compile()
 
 let s3 = process.hrtime.bigint()
 
diff --git a/benchmark/utils.mjs b/benchmark/utils.mjs
index d26a56b..d4a448e 100644
--- a/benchmark/utils.mjs
+++ b/benchmark/utils.mjs
@@ -1,6 +1,6 @@
 export function printTime (t) {
   let time = Number(t)
-  let units = ['n', 'μ', 'm', 'c', 's']
+  let units = ['n', 'μ', 'ms', 's']
   let unit = units[0]
   let unitPower = 1
   for (let i = 0; i < units.length; i++) {
@@ -9,7 +9,7 @@ export function printTime (t) {
       break
     }
     unitPower = power
-    unit = units[i]
+    unit = units[i + 1]
   }
   console.log(t, '=', Number((time / unitPower).toFixed(2)), unit)
-}
\ No newline at end of file
+}
diff --git a/flaska.d.ts b/flaska.d.ts
new file mode 100644
index 0000000..bea95aa
--- /dev/null
+++ b/flaska.d.ts
@@ -0,0 +1,147 @@
+import { IncomingMessage, ServerResponse, Server } from 'node:http'
+import { Stats } from 'node:fs'
+
+type Maybe<T> = T | null | undefined
+
+export const MimeTypeDb: Record<string, Array<string>>
+
+export type Logger = {
+  fatal: (...data: any[]) => void,
+  error: (...data: any[]) => void,
+  warn: (...data: any[]) => void,
+  info: (...data: any[]) => void,
+  debug: (...data: any[]) => void,
+  trace: (...data: any[]) => void,
+  log: (...data: any[]) => void,
+}
+
+export type Method = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'OPTIONS' | 'PATCH' | 'HEAD'
+
+export type Context = {
+  log: Logger,
+  req: IncomingMessage,
+  res: ServerResponse<InstanceType<IncomingMessage>>,
+  method: Method,
+  url: string,
+  search: string,
+  state: Record<string, any>,
+  status: number,
+  query: URLSearchParams,
+  body: any,
+  type: string | null,
+  length: number | null,
+  headers: Record<string, string>,
+  aborted?: boolean,
+}
+
+export interface BodyHasHandler = { handleRequest: (ctx: Context) => any }
+export type HandlerSync = (ctx: Context) => void
+export type HandlerAsync = (ctx: Context) => Promise<void>
+export type Handler = HandlerSync | HandlerAsync
+
+export function QueryHandler(): Handler
+export function JsonHandler(options: { sizeLimit?: number | null } = {}): Handler
+export function CorsHandler(options: {
+  allowedMethod?: Maybe<string>,
+  allowedOrigins?: Maybe<string[]>,
+  allowedHeaders?: Maybe<string | boolean>,
+  credentials?: Maybe<boolean>,
+  exposeHeaders?: Maybe<string>,
+  maxAge?: Maybe<string>,
+} = {}): Handler
+
+export type File = { name: string, path: string, filename: string }
+
+export class HttpError {
+  constructor(statusCode: number, message: string, body: any)
+  status: number
+  body: any
+}
+
+export class FileResponse implements BodyHasHandler {
+  constructor(filepath: string, stat: Stats)
+  filepath: string
+  stat: Stats
+  handleRequst(ctx: Context): any
+}
+
+export function FormidableHandler(formidable: any, options: {
+  parseFields?: Maybe<boolean>,
+  uploadDir?: Maybe<string>,
+  filename?: Maybe<(file: File) => string>,
+  maxFileSize?: Maybe<number>,
+  maxFieldSize?: Maybe<number>,
+  maxFields?: Maybe<number>,
+  rename?: Maybe<boolean>,
+} = {}): Handler
+
+export class RouterError {
+  constructor(route1: any, route2: any, message: string)
+  routeA: any
+  routeB: any
+}
+
+export type FlaskaRouterMatch = {
+  path: {
+    path: string,
+    handlers: Handler[],
+  },
+  params: Record<string, string>,
+}
+
+export class FlaskaRouter {
+  constructor()
+  addRoute(path: string, handler: Handler): void
+  addRoute(path: string, middlewares: Handler | Handler[], handler: Handler): void
+  compile(): void
+  match(url: string): FlaskaRouterMatch | null
+}
+
+export type FlaskaOptions = {
+  defaultHeaders?: Maybe<Record<string, string>>,
+  log?: Maybe<Logger>,
+  nonce?: Maybe<Array<'child-src' | 'connect-src' | 'default-src' | 'fenced-frame-src' | 'font-src' | 'frame-src' | 'img-src' | 'manifest-src' | 'media-src' | 'object-src' | 'prefetch-src' | 'script-src' | 'script-src-elem' | 'script-src-attr' | 'style-src' | 'style-src-elem' | 'style-src-attr' | 'worker-src' | 'base-uri' | 'sandbox' | 'form-action' | 'frame-ancestors' | 'require-trusted-types-for' | 'trusted-types' | 'upgrade-insecure-requests'>>,
+  nonceCacheLength: Maybe<number>,
+  appendHeaders?: Maybe<Record<string, string>>,
+}
+
+export class Flaska {
+  log: Logger
+  server: Server
+  routers: {
+    GET: FlaskaRouter,
+    POST: FlaskaRouter,
+    PUT: FlaskaRouter,
+    DELETE: FlaskaRouter,
+    OPTIONS: FlaskaRouter,
+    PATCH: FlaskaRouter,
+    HEAD: FlaskaRouter,
+  }
+  get: FlaskaRouter['addRoute']
+  post: FlaskaRouter['addRoute']
+  put: FlaskaRouter['addRoute']
+  delete: FlaskaRouter['addRoute']
+  options: FlaskaRouter['addRoute']
+  patch: FlaskaRouter['addRoute']
+  head: FlaskaRouter['addRoute']
+
+  constructor(options: FlaskaOptions)
+  devMode(): void
+  on404(handler: Handler): void
+  onerror(handler: Handler): void
+  onreqerror(handler: Handler): void
+  onreserror(handler: Handler): void
+  before(handler: HandlerSync): void
+  beforeAsync(handler: HandlerAsync): void
+  after(handler: HandlerSync): void
+  afterAsync(handler: HandlerAsync): void
+  listen(port: number): void
+  listen(port: number, ip: string): void
+  listen(port: number, cb: () => void): void
+  listen(port: number, ip:string, cb: () => void): void
+  listenAsync(port: number): Promise<void>
+  listenAsync(port: number, ip: string): Promise<void>
+  listenAsync(port: number, cb: () => void): Promise<void>
+  listenAsync(port: number, ip:string, cb: () => void): Promise<void>
+  closeAsync(): Promise<void>
+}
diff --git a/flaska.mjs b/flaska.mjs
index ce92c36..e949c6c 100644
--- a/flaska.mjs
+++ b/flaska.mjs
@@ -37,10 +37,6 @@ export const MimeTypeDb = getDb()
  * Router
  */
 
-export const ErrorCodes = {
-  ERR_CONNECTION_ABORTED: 'ERR_CON_ABORTED'
-}
-
 // Taken from https://github.com/nfp-projects/koa-lite/blob/master/lib/statuses.js
 const statuses = {
   100: 'Continue', 101: 'Switching Protocols', 102: 'Processing', 103: 'Early Hints',
@@ -935,7 +931,7 @@ ctx.state.nonce = nonce;
     this._afterAsync.push(handler)
   }
 
-  requestStart(req, res) {
+  __requestStart(req, res) {
     let url = req.url
     let search = ''
     let hasSearch = url.indexOf('?')
@@ -965,14 +961,14 @@ ctx.state.nonce = nonce;
         ctx.aborted = true
       }
       this._onreqerror(err, ctx)
-      this.requestEnded(ctx)
+      this.__requestEnded(ctx)
     })
     res.on('error', (err) => {
       this._onreserror(err, ctx)
     })
 
     res.on('finish', () => {
-      this.requestEnded(ctx)
+      this.__requestEnded(ctx)
     })
 
     try {
@@ -980,59 +976,59 @@ ctx.state.nonce = nonce;
       if (this._beforeAsyncCompiled) {
         return this._beforeAsyncCompiled(ctx)
           .then(() => {
-            this.requestStartInternal(ctx)
+            this.__requestStartInternal(ctx)
           }).catch(err => {
-            this.requestEnd(err, ctx)
+            this.__requestEnd(err, ctx)
           })
       }
-      this.requestStartInternal(ctx)
+      this.__requestStartInternal(ctx)
     }
     catch (err) {
-      this.requestEnd(err, ctx)
+      this.__requestEnd(err, ctx)
     }
   }
 
-  requestStartInternal(ctx) {
+  __requestStartInternal(ctx) {
     let route = this.routers[ctx.method].match(ctx.url)
     if (!route) {
       let middle = this._on404(ctx)
       if (middle && middle.then) {
         return middle.then(() => {
-          this.requestEnd(null, ctx)
+          this.__requestEnd(null, ctx)
         }, err => {
-          this.requestEnd(err, ctx)
+          this.__requestEnd(err, ctx)
         })
       }
-      return this.requestEnd(null, ctx)
+      return this.__requestEnd(null, ctx)
     }
 
     ctx.params = route.params
 
-    let handlers = this.runHandlers(ctx, route.path.handlers, 0)
+    let handlers = this.__runHandlers(ctx, route.path.handlers, 0)
 
     if (handlers && handlers.then) {
       return handlers.then(() => {
-        this.requestEnd(null, ctx)
+        this.__requestEnd(null, ctx)
       }, err => {
-        this.requestEnd(err, ctx)
+        this.__requestEnd(err, ctx)
       })
     }
 
-    this.requestEnd(null, ctx)
+    this.__requestEnd(null, ctx)
   }
 
-  runHandlers(ctx, middles, index) {
+  __runHandlers(ctx, middles, index) {
     for (let i = index; i < middles.length; i++) {
       let res = middles[i](ctx)
       if (res && res.then) {
         return res.then(() => {
-          return this.runHandlers(ctx, middles, i + 1)
+          return this.__runHandlers(ctx, middles, i + 1)
         })
       }
     }
   }
 
-  requestEnd(orgErr, ctx) {
+  __requestEnd(orgErr, ctx) {
     let err = orgErr
     let handleUsed = Boolean(ctx.body && ctx.body.handleRequest)
     if (handleUsed) {
@@ -1120,7 +1116,7 @@ ctx.state.nonce = nonce;
     }
   }
 
-  requestEnded(ctx) {
+  __requestEnded(ctx) {
     if (ctx.finished) return
     ctx.finished = true
 
@@ -1134,7 +1130,7 @@ ctx.state.nonce = nonce;
     }
   }
 
-  compile() {
+  __compile() {
     let types = ['before', 'after']
     for (let i = 0; i < types.length; i++) {
       let type = types[i]
@@ -1170,9 +1166,9 @@ ctx.state.nonce = nonce;
     this.routers.PATCH.compile()
   }
 
-  create() {
-    this.compile()
-    this.server = this.http.createServer(this.requestStart.bind(this))
+  __create() {
+    this.__compile()
+    this.server = this.http.createServer(this.__requestStart.bind(this))
 
     this.server.on('connection', function (socket) {
       // Set socket idle timeout in milliseconds
@@ -1197,7 +1193,7 @@ ctx.state.nonce = nonce;
       throw new Error('Flaska.listen() called with non-number in port')
     }
 
-    this.create()
+    this.__create()
 
     this.server.listen(port, ip, cb)
   }
@@ -1207,7 +1203,7 @@ ctx.state.nonce = nonce;
       return Promise.reject(new Error('Flaska.listen() called with non-number in port'))
     }
 
-    this.create()
+    this.__create()
 
     if (this.server.listenAsync && typeof(this.server.listenAsync) === 'function') {
       return this.server.listenAsync(port, ip)
diff --git a/package.json b/package.json
index 8aad104..5626430 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,13 @@
 {
   "name": "flaska",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "description": "Flaska is a micro web-framework for node. It is designed to be fast, simple and lightweight, and is distributed as a single file module with no dependencies.",
   "main": "flaska.mjs",
   "scripts": {
     "test": "eltro -r dot",
     "test:watch": "eltro -r dot -w test"
   },
+  "types": "flaska.d.ts",
   "watch": {
     "test": {
       "patterns": [
diff --git a/test/flaska.api.test.mjs b/test/flaska.api.test.mjs
index 9485ee5..9c49fd7 100644
--- a/test/flaska.api.test.mjs
+++ b/test/flaska.api.test.mjs
@@ -668,7 +668,7 @@ t.describe('#compile()', function() {
     flaska.before(function(ctx) { ctx.c = 3 })
     flaska.before(function(ctx) { ctx.d = 4 })
     assert.notOk(flaska._beforeCompiled)
-    flaska.compile()
+    flaska.__compile()
     assert.ok(flaska._beforeCompiled)
     assert.notOk(flaska._beforeAsyncCompiled)
     assert.strictEqual(typeof(flaska._beforeCompiled), 'function')
@@ -686,7 +686,7 @@ t.describe('#compile()', function() {
     flaska.beforeAsync(function(ctx) { return new Promise(function(res) { ctx.c = 3; res() }) })
     flaska.beforeAsync(function(ctx) { ctx.d = 4 })
     assert.notOk(flaska._beforeAsyncCompiled)
-    flaska.compile()
+    flaska.__compile()
     assert.ok(flaska._beforeAsyncCompiled)
     assert.strictEqual(typeof(flaska._beforeAsyncCompiled), 'function')
     let ctx = createCtx()
@@ -704,7 +704,7 @@ t.describe('#compile()', function() {
     flaska.after(function(ctx) { ctx.c = 3 })
     flaska.after(function(ctx) { ctx.d = 4 })
     assert.notOk(flaska._afterCompiled)
-    flaska.compile()
+    flaska.__compile()
     assert.ok(flaska._afterCompiled)
     assert.notOk(flaska._afterAsyncCompiled)
     assert.strictEqual(typeof(flaska._afterCompiled), 'function')
@@ -722,7 +722,7 @@ t.describe('#compile()', function() {
     flaska.afterAsync(function(ctx) { return new Promise(function(res) { ctx.c = 3; res() }) })
     flaska.afterAsync(function(ctx) { ctx.d = 4 })
     assert.notOk(flaska._afterAsyncCompiled)
-    flaska.compile()
+    flaska.__compile()
     assert.ok(flaska._afterAsyncCompiled)
     assert.strictEqual(typeof(flaska._afterAsyncCompiled), 'function')
     let ctx = createCtx()
@@ -738,13 +738,13 @@ t.describe('#compile()', function() {
 t.describe('#runHandlers()', function() {
   t.test('should work with empty array', function() {
     let flaska = new Flaska({}, faker)
-    flaska.runHandlers({}, [], 0)
+    flaska.__runHandlers({}, [], 0)
   })
 
   t.test('should work with correct index', function() {
     let checkIsTrue = false
     let flaska = new Flaska({}, faker)
-    flaska.runHandlers({}, [
+    flaska.__runHandlers({}, [
       function() { throw new Error('should not be thrown') },
       function() { throw new Error('should not be thrown') },
       function() { throw new Error('should not be thrown') },
@@ -757,7 +757,7 @@ t.describe('#runHandlers()', function() {
     const assertCtx = createCtx({ a: 1 })
     let checkCounter = 0
     let flaska = new Flaska({}, faker)
-    flaska.runHandlers(assertCtx, [
+    flaska.__runHandlers(assertCtx, [
       function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
       function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
       function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
@@ -771,7 +771,7 @@ t.describe('#runHandlers()', function() {
     const assertCtx = createCtx({ a: 1 })
     let checkCounter = 0
     let flaska = new Flaska({}, faker)
-    let result = flaska.runHandlers(assertCtx, [
+    let result = flaska.__runHandlers(assertCtx, [
       function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 0); checkCounter++ },
       function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 1); checkCounter++ },
       function(ctx) { return new Promise(function(res) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 2); checkCounter++; res() }) },
@@ -793,19 +793,19 @@ t.describe('#runHandlers()', function() {
     const assertError = { a: 1 }
     let checkCounter = 0
     let flaska = new Flaska({}, faker)
-    let err = await assert.isRejected(flaska.runHandlers({}, [
+    let err = await assert.isRejected(flaska.__runHandlers({}, [
       function() { },
       function() { return new Promise(function(res, rej) { rej(assertError) }) },
       function() { throw new Error('should not be seen') },
     ], 0))
     assert.strictEqual(err, assertError)
-    err = await assert.isRejected(flaska.runHandlers({}, [
+    err = await assert.isRejected(flaska.__runHandlers({}, [
       function() { },
       function() { return Promise.reject(assertError) },
       function() { throw new Error('should not be seen') },
     ], 0))
     assert.strictEqual(err, assertError)
-    err = await assert.isRejected(flaska.runHandlers({}, [
+    err = await assert.isRejected(flaska.__runHandlers({}, [
       function() { },
       function() { return Promise.resolve() },
       function() { throw assertError },
@@ -828,7 +828,7 @@ t.describe('#listen()', function() {
   t.test('it should automatically call compile', function() {
     let assertCalled = false
     let flaska = new Flaska({}, faker)
-    flaska.compile = function() { assertCalled = true }
+    flaska.__compile = function() { assertCalled = true }
     flaska.listen(404)
     assert.strictEqual(assertCalled, true)
   })
@@ -847,8 +847,8 @@ t.describe('#listen()', function() {
       checkListenCb = cb
     })
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -871,8 +871,8 @@ t.describe('#listen()', function() {
       checkListenCb = cb
     })
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -891,14 +891,14 @@ t.describe('#listen()', function() {
       checkHandler = cb
     })
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
     flaska.listen(404)
     assert.strictEqual(typeof(checkHandler), 'function')
-    assert.notStrictEqual(checkHandler, flaska.requestStart)
+    assert.notStrictEqual(checkHandler, flaska.__requestStart)
     assert.notStrictEqual(checkIsTrue, true)
     assert.notStrictEqual(checkInternalThis, flaska)
     checkHandler()
@@ -929,7 +929,7 @@ t.describe('#listenAsync()', function() {
   t.test('it should automatically call compile', async function() {
     let assertCalled = false
     let flaska = new Flaska({}, faker)
-    flaska.compile = function() { assertCalled = true }
+    flaska.__compile = function() { assertCalled = true }
     await flaska.listenAsync(404)
     assert.strictEqual(assertCalled, true)
   })
@@ -947,8 +947,8 @@ t.describe('#listenAsync()', function() {
     })
 
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -968,8 +968,8 @@ t.describe('#listenAsync()', function() {
       cb()
     })
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -992,8 +992,8 @@ t.describe('#listenAsync()', function() {
         }
       }
     })
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -1016,8 +1016,8 @@ t.describe('#listenAsync()', function() {
         }
       }
     })
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
@@ -1036,14 +1036,14 @@ t.describe('#listenAsync()', function() {
       checkHandler = cb
     })
     let flaska = new Flaska({}, testFaker)
-    assert.ok(flaska.requestStart)
-    flaska.requestStart = function() {
+    assert.ok(flaska.__requestStart)
+    flaska.__requestStart = function() {
       checkInternalThis = this
       checkIsTrue = true
     }
     await flaska.listenAsync(404)
     assert.strictEqual(typeof(checkHandler), 'function')
-    assert.notStrictEqual(checkHandler, flaska.requestStart)
+    assert.notStrictEqual(checkHandler, flaska.__requestStart)
     assert.notStrictEqual(checkIsTrue, true)
     assert.notStrictEqual(checkInternalThis, flaska)
     checkHandler()