diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..178135c
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1 @@
+/dist/
diff --git a/.eslintrc.js b/.eslintrc.js
index d1766e9..f23d631 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -14,6 +14,7 @@ module.exports = {
   extends: [
     '@scode'
   ],
+  parser: '@typescript-eslint/parser',
   globals: {
     Atomics: 'readonly',
     SharedArrayBuffer: 'readonly'
diff --git a/lib/handler_interfaces.ts b/lib/handler_interfaces.ts
index ea784a0..9773fc5 100644
--- a/lib/handler_interfaces.ts
+++ b/lib/handler_interfaces.ts
@@ -25,3 +25,6 @@ export interface put_handler {
 export interface trace_handler {
   async handle_trace_request(req: Request, res: Response): void
 }
+
+export default {all_handler,delete_handler,get_handler,head_handler,post_handler,put_handler,
+  trace_handler}
\ No newline at end of file
diff --git a/lib/index.ts b/lib/index.ts
new file mode 100644
index 0000000..20dee6e
--- /dev/null
+++ b/lib/index.ts
@@ -0,0 +1,4 @@
+import handler_interfaces from './handler_interfaces';
+import Transaction from './transaction';
+
+export handler_interfaces;
diff --git a/lib/transaction.ts b/lib/transaction.ts
index c050060..e24ae17 100644
--- a/lib/transaction.ts
+++ b/lib/transaction.ts
@@ -1,7 +1,7 @@
 import consts from '@scode/consts';
-import {Request,Response} from 'express';
+import {Request, Response} from '@types/express';
 
-class Transaction {
+export default class Transaction {
   /* private */
   private _req: Request;
   private _res: Response;
@@ -15,14 +15,15 @@ class Transaction {
   public get res(): Response => this._res;
 
   /* constructor */
-  public Request(req: Request,res: Response) {
+  public Transaction(req: Request,res: Response) {
     this._req = req;
     this._res = res;
   }
 
   /* methods */
-  public end() {
+  public end(data: any) {
     if (this.status !== -1)
-      this.res.setHeader(this.status);
+      this._res.status(this.status);
+    this._res.end(data);
   }
 }
diff --git a/package.json b/package.json
index c992c7c..85b02b9 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
   },
   "dependencies": {
     "@scode/consts": "^1.0.12",
-    "@types/express": "^4.17.4"
+    "@types/express": "^4.17.4",
+    "typescript": "^3.8.3"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 4566cb3..d7a1184 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -256,10 +256,12 @@
   integrity sha512-7Zjb2wFGqCMx/h/T0ceR5kgXT1+fHDyS4ml4pqdtmT6WiR3N+8X2KRlm3mPtU0Td+vzmvXOXBNMuwQuuuqFrjA==
 
 "@scode/eslint-config@^1.2.31":
-  version "1.2.31"
-  resolved "https://npm.scode.ovh/@scode%2feslint-config/-/eslint-config-1.2.31.tgz#dc15b427f473475b51ed32b6dbf2078f14e53b23"
-  integrity sha512-Sk1ptDTHt9a8BR4c4uP5ElJ1dyKqbJtEfzAng7pp2fgd1Ro3wPXHycCtnzRySqsB0jFXqfHWekICt2Skp+4FSQ==
+  version "1.3.1"
+  resolved "https://npm.scode.ovh/@scode%2feslint-config/-/eslint-config-1.3.1.tgz#1fa0e0cfde03a55b492f40dd476dd830f3a37c7b"
+  integrity sha512-FFgo4rcuF02o9eBw32NJyHshj02gB2NXkuoCKgp5yDZ2T7TNVTx94n+xR0GFiJbn7E+ciHAqUU8iSD54VKy/5g==
   dependencies:
+    "@typescript-eslint/eslint-plugin" "^2.26.0"
+    "@typescript-eslint/parser" "^2.26.0"
     eslint-plugin-import "^2.20.1"
     eslint-plugin-jsdoc "22"
     eslint-plugin-node "^11.0.0"
@@ -353,6 +355,11 @@
   dependencies:
     "@types/node" "*"
 
+"@types/eslint-visitor-keys@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#1ee30d79544ca84d68d4b3cdb0af4f205663dd2d"
+  integrity sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==
+
 "@types/events@*":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
@@ -385,6 +392,11 @@
     "@types/minimatch" "*"
     "@types/node" "*"
 
+"@types/json-schema@^7.0.3":
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
+  integrity sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
+
 "@types/mime@*":
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.1.tgz#dc488842312a7f075149312905b5e3c0b054c79d"
@@ -423,6 +435,49 @@
     "@types/express-serve-static-core" "*"
     "@types/mime" "*"
 
+"@typescript-eslint/eslint-plugin@^2.26.0":
+  version "2.26.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-2.26.0.tgz#04c96560c8981421e5a9caad8394192363cc423f"
+  integrity sha512-4yUnLv40bzfzsXcTAtZyTjbiGUXMrcIJcIMioI22tSOyAxpdXiZ4r7YQUU8Jj6XXrLz9d5aMHPQf5JFR7h27Nw==
+  dependencies:
+    "@typescript-eslint/experimental-utils" "2.26.0"
+    functional-red-black-tree "^1.0.1"
+    regexpp "^3.0.0"
+    tsutils "^3.17.1"
+
+"@typescript-eslint/experimental-utils@2.26.0":
+  version "2.26.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-2.26.0.tgz#063390c404d9980767d76274df386c0aa675d91d"
+  integrity sha512-RELVoH5EYd+JlGprEyojUv9HeKcZqF7nZUGSblyAw1FwOGNnmQIU8kxJ69fttQvEwCsX5D6ECJT8GTozxrDKVQ==
+  dependencies:
+    "@types/json-schema" "^7.0.3"
+    "@typescript-eslint/typescript-estree" "2.26.0"
+    eslint-scope "^5.0.0"
+    eslint-utils "^2.0.0"
+
+"@typescript-eslint/parser@^2.26.0":
+  version "2.26.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-2.26.0.tgz#385463615818b33acb72a25b39c03579df93d76f"
+  integrity sha512-+Xj5fucDtdKEVGSh9353wcnseMRkPpEAOY96EEenN7kJVrLqy/EVwtIh3mxcUz8lsFXW1mT5nN5vvEam/a5HiQ==
+  dependencies:
+    "@types/eslint-visitor-keys" "^1.0.0"
+    "@typescript-eslint/experimental-utils" "2.26.0"
+    "@typescript-eslint/typescript-estree" "2.26.0"
+    eslint-visitor-keys "^1.1.0"
+
+"@typescript-eslint/typescript-estree@2.26.0":
+  version "2.26.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-2.26.0.tgz#d8132cf1ee8a72234f996519a47d8a9118b57d56"
+  integrity sha512-3x4SyZCLB4zsKsjuhxDLeVJN6W29VwBnYpCsZ7vIdPel9ZqLfIZJgJXO47MNUkurGpQuIBALdPQKtsSnWpE1Yg==
+  dependencies:
+    debug "^4.1.1"
+    eslint-visitor-keys "^1.1.0"
+    glob "^7.1.6"
+    is-glob "^4.0.1"
+    lodash "^4.17.15"
+    semver "^6.3.0"
+    tsutils "^3.17.1"
+
 acorn-jsx@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.2.0.tgz#4c66069173d6fdd68ed85239fc256226182b2ebe"
@@ -3284,11 +3339,18 @@ trim-off-newlines@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-off-newlines/-/trim-off-newlines-1.0.1.tgz#9f9ba9d9efa8764c387698bcbfeb2c848f11adb3"
   integrity sha1-n5up2e+odkw4dpi8v+sshI8RrbM=
 
-tslib@^1.9.0, tslib@~1.11.1:
+tslib@^1.8.1, tslib@^1.9.0, tslib@~1.11.1:
   version "1.11.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
   integrity sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==
 
+tsutils@^3.17.1:
+  version "3.17.1"
+  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-3.17.1.tgz#ed719917f11ca0dee586272b2ac49e015a2dd759"
+  integrity sha512-kzeQ5B8H3w60nFY2g8cJIuH7JDpsALXySGtwGJ0p2LSjLgay3NdIpqq5SoOBe46bKDW2iq25irHCr8wjomUS2g==
+  dependencies:
+    tslib "^1.8.1"
+
 tunnel@0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/tunnel/-/tunnel-0.0.6.tgz#72f1314b34a5b192db012324df2cc587ca47f92c"
@@ -3344,7 +3406,7 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^3.6.3:
+typescript@^3.6.3, typescript@^3.8.3:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
   integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==