diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..47493ed
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,20 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{cc,mjs,js,jsx,ts,tsx,json,py,yml,md}]
+charset = utf-8
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..1cfeb43
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,23 @@
+module.exports = {
+    root: true,
+    "env": {
+        "commonjs": true,
+        "es2020": true,
+        "node": true
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 11
+    },
+    "plugins": ["@typescript-eslint"],
+    "rules": {
+        "indent": ["error", 2],
+        "semi": "error",
+        "@typescript-eslint/no-var-requires": 0,
+        "no-constant-condition": 0
+    }
+};
diff --git a/.gitignore b/.gitignore
index b2b2ecb..218c3e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 node_modules
 build
+tsc-lib
 deps
 output
 .vscode
diff --git a/examples/client.js b/examples/client.js
index 43c2ec7..8896225 100644
--- a/examples/client.js
+++ b/examples/client.js
@@ -1,3 +1,5 @@
+"use strict";
+
 const fs = require('fs');
 const { SRTWriteStream } = require('../index.js');
 
@@ -8,9 +10,9 @@ srt.connect(writeStream => {
 });
 srt.on('error', err => {
   console.error(err.message);
-})
+});
 
 process.on('SIGINT', () => {
   console.log("Closing connection");
   srt.close();
-});
\ No newline at end of file
+});
diff --git a/examples/epoll.js b/examples/epoll.js
index e2b67eb..a645ec5 100644
--- a/examples/epoll.js
+++ b/examples/epoll.js
@@ -1,10 +1,12 @@
+"use strict";
+
 const { SRT } = require('../index.js');
 
 const srt = new SRT();
 const socket = srt.createSocket();
 if (socket !== -1) {
   console.log("Created socket: " + socket);
-} 
+}
 
 let result;
 
@@ -41,7 +43,7 @@ while (true) {
     } else {
       while (true) {
         const chunk = srt.read(event.socket, 1316);
-        console.log("Read chunk: " + chunk.length);      
+        console.log("Read chunk: " + chunk.length);
       }
     }
   });
diff --git a/examples/readable.js b/examples/readable.js
index 75a5bfd..78d42d0 100644
--- a/examples/readable.js
+++ b/examples/readable.js
@@ -1,3 +1,5 @@
+"use strict";
+
 const fs = require('fs');
 const dest = fs.createWriteStream('./output');
 const { SRTReadStream } = require('../index.js');
@@ -17,4 +19,4 @@ if (process.argv[2] === "listener") {
   srt.connect(readStream => {
     readStream.pipe(dest);
   });
-}
\ No newline at end of file
+}
diff --git a/examples/server.js b/examples/server.js
index a106c16..fba1131 100644
--- a/examples/server.js
+++ b/examples/server.js
@@ -1,3 +1,5 @@
+"use strict";
+
 const fs = require('fs');
 const { SRTReadStream } = require('../index.js');
 
diff --git a/examples/srt.js b/examples/srt.js
index 705349c..e554e50 100644
--- a/examples/srt.js
+++ b/examples/srt.js
@@ -1,10 +1,12 @@
+"use strict";
+
 const { SRT } = require('../index.js');
 
 const srt = new SRT();
 const socket = srt.createSocket();
 if (socket !== -1) {
   console.log("Created socket: " + socket);
-} 
+}
 
 let result;
 result = srt.bind(socket, "0.0.0.0", 1234);
@@ -22,10 +24,10 @@ if (!result) {
 }
 
 console.log("Waiting for client to connect");
-fhandle = srt.accept(socket);
+const fhandle = srt.accept(socket);
 
 if (fhandle) {
   console.log("Client connected");
   const chunk = srt.read(fhandle, 1316);
   console.log("Read chunk: " + chunk.length);
-}
\ No newline at end of file
+}
diff --git a/examples/srt.ts b/examples/srt.ts
new file mode 100644
index 0000000..6fe0855
--- /dev/null
+++ b/examples/srt.ts
@@ -0,0 +1,31 @@
+import {SRT} from '../index';
+
+const srt = new SRT();
+const socket = srt.createSocket();
+if (socket !== -1) {
+  console.log("Created socket: " + socket);
+}
+
+let result;
+result = srt.bind(socket, "0.0.0.0", 1234);
+if (!result) {
+  console.log("Bind success");
+} else {
+  console.log(result);
+}
+
+result = srt.listen(socket, 2);
+if (!result) {
+  console.log("Listen success");
+} else {
+  console.log(result);
+}
+
+console.log("Waiting for client to connect");
+const fhandle = srt.accept(socket);
+
+if (fhandle) {
+  console.log("Client connected");
+  const chunk = srt.read(fhandle, 1316);
+  console.log("Read chunk: " + chunk.length);
+}
diff --git a/examples/writable.js b/examples/writable.js
index 76b8eb7..c8210bc 100644
--- a/examples/writable.js
+++ b/examples/writable.js
@@ -1,3 +1,5 @@
+"use strict";
+
 const fs = require('fs');
 const source = fs.createReadStream(process.argv[2], { highWaterMark: 1316 });
 const { SRTWriteStream } = require('../index.js');
@@ -5,4 +7,4 @@ const { SRTWriteStream } = require('../index.js');
 const srt = new SRTWriteStream('127.0.0.1', 1234);
 srt.connect(writeStream => {
   source.pipe(writeStream);
-});
\ No newline at end of file
+});
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..6eccc32
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,5 @@
+/// <reference path="./types/srt-api.d.ts" />
+/// <reference path="./types/srt-stream.d.ts" />
+/// <reference path="./types/srt-server.d.ts" />
+
+export * from "srt";
diff --git a/package-lock.json b/package-lock.json
index f599c92..732f716 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,12 +4,158 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.4.tgz",
+      "integrity": "sha512-vG6SvB6oYEhvgisZNFRmRCUkLz11c7rp+tbNTynGqc6mS1d5ATd/sGyV6W0KZZnXRKMTzZDRgQT3Ou9jhpAfUg==",
+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.10.4"
+      }
+    },
+    "@babel/helper-validator-identifier": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
+      "integrity": "sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw==",
+      "dev": true
+    },
+    "@babel/highlight": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.10.4.tgz",
+      "integrity": "sha512-i6rgnR/YgPEQzZZnbTHHuZdlE8qyoBNalD6F+q4vAFlcMEcqmkoG+mPqJYJCo63qPf74+Y1UZsl3l6f7/RIkmA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-validator-identifier": "^7.10.4",
+        "chalk": "^2.0.0",
+        "js-tokens": "^4.0.0"
+      },
+      "dependencies": {
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        }
+      }
+    },
+    "@types/color-name": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
+      "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==",
+      "dev": true
+    },
+    "@types/eslint-visitor-keys": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz",
+      "integrity": "sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==",
+      "dev": true
+    },
+    "@types/json-schema": {
+      "version": "7.0.5",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.5.tgz",
+      "integrity": "sha512-7+2BITlgjgDhH0vvwZU/HZJVyk+2XUlvxXe8dFMedNX/aMkaOq++rMAFXc0tM7ij15QaWlbdQASBR9dihi+bDQ==",
+      "dev": true
+    },
+    "@types/node": {
+      "version": "14.0.23",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.23.tgz",
+      "integrity": "sha512-Z4U8yDAl5TFkmYsZdFPdjeMa57NOvnaf1tljHzhouaPEp7LCj2JKkejpI1ODviIAQuW4CcQmxkQ77rnLsOOoKw==",
+      "dev": true
+    },
+    "@typescript-eslint/eslint-plugin": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-3.6.1.tgz",
+      "integrity": "sha512-06lfjo76naNeOMDl+mWG9Fh/a0UHKLGhin+mGaIw72FUMbMGBkdi/FEJmgEDzh4eE73KIYzHWvOCYJ0ak7nrJQ==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "3.6.1",
+        "debug": "^4.1.1",
+        "functional-red-black-tree": "^1.0.1",
+        "regexpp": "^3.0.0",
+        "semver": "^7.3.2",
+        "tsutils": "^3.17.1"
+      }
+    },
+    "@typescript-eslint/experimental-utils": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-3.6.1.tgz",
+      "integrity": "sha512-oS+hihzQE5M84ewXrTlVx7eTgc52eu+sVmG7ayLfOhyZmJ8Unvf3osyFQNADHP26yoThFfbxcibbO0d2FjnYhg==",
+      "dev": true,
+      "requires": {
+        "@types/json-schema": "^7.0.3",
+        "@typescript-eslint/types": "3.6.1",
+        "@typescript-eslint/typescript-estree": "3.6.1",
+        "eslint-scope": "^5.0.0",
+        "eslint-utils": "^2.0.0"
+      }
+    },
+    "@typescript-eslint/parser": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-3.6.1.tgz",
+      "integrity": "sha512-SLihQU8RMe77YJ/jGTqOt0lMq7k3hlPVfp7v/cxMnXA9T0bQYoMDfTsNgHXpwSJM1Iq2aAJ8WqekxUwGv5F67Q==",
+      "dev": true,
+      "requires": {
+        "@types/eslint-visitor-keys": "^1.0.0",
+        "@typescript-eslint/experimental-utils": "3.6.1",
+        "@typescript-eslint/types": "3.6.1",
+        "@typescript-eslint/typescript-estree": "3.6.1",
+        "eslint-visitor-keys": "^1.1.0"
+      }
+    },
+    "@typescript-eslint/types": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-3.6.1.tgz",
+      "integrity": "sha512-NPxd5yXG63gx57WDTW1rp0cF3XlNuuFFB5G+Kc48zZ+51ZnQn9yjDEsjTPQ+aWM+V+Z0I4kuTFKjKvgcT1F7xQ==",
+      "dev": true
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-3.6.1.tgz",
+      "integrity": "sha512-G4XRe/ZbCZkL1fy09DPN3U0mR6SayIv1zSeBNquRFRk7CnVLgkC2ZPj8llEMJg5Y8dJ3T76SvTGtceytniaztQ==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/types": "3.6.1",
+        "@typescript-eslint/visitor-keys": "3.6.1",
+        "debug": "^4.1.1",
+        "glob": "^7.1.6",
+        "is-glob": "^4.0.1",
+        "lodash": "^4.17.15",
+        "semver": "^7.3.2",
+        "tsutils": "^3.17.1"
+      }
+    },
+    "@typescript-eslint/visitor-keys": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-3.6.1.tgz",
+      "integrity": "sha512-qC8Olwz5ZyMTZrh4Wl3K4U6tfms0R/mzU4/5W3XeUZptVraGVmbptJbn6h2Ey6Rb3hOs3zWoAUebZk8t47KGiQ==",
+      "dev": true,
+      "requires": {
+        "eslint-visitor-keys": "^1.1.0"
+      }
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
       "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
       "dev": true
     },
+    "acorn": {
+      "version": "7.3.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.3.1.tgz",
+      "integrity": "sha512-tLc0wSnatxAQHVHUapaHdz72pi9KUyHjq5KyHjGg9Y8Ifdc79pTh2XvI6I1/chZbnM7QtNKzh66ooDogPZSleA==",
+      "dev": true
+    },
+    "acorn-jsx": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.2.0.tgz",
+      "integrity": "sha512-HiUX/+K2YpkpJ+SzBffkM/AQ2YE03S0U1kjTLVpoJdhZMOWy8qvXVN9JdLqv2QsaQ6MPYQIuNmwD8zOiYUofLQ==",
+      "dev": true
+    },
     "ajv": {
       "version": "6.12.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.2.tgz",
@@ -22,12 +168,27 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ansi-colors": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.1.tgz",
+      "integrity": "sha512-JoX0apGbHaUJBNl6yF+p6JAFYZ666/hhCGKN5t9QFjbJQKUU/g8MNbFDbvfrgKXvI1QpZplPOnwIo99lX/AAmA==",
+      "dev": true
+    },
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
       "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
       "dev": true
     },
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
+    },
     "aproba": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
@@ -44,6 +205,21 @@
         "readable-stream": "^2.0.6"
       }
     },
+    "arg": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.3.tgz",
+      "integrity": "sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==",
+      "dev": true
+    },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
     "asn1": {
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
@@ -59,6 +235,12 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
+    "astral-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
+      "integrity": "sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==",
+      "dev": true
+    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -102,12 +284,76 @@
         "concat-map": "0.0.1"
       }
     },
+    "buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
+    },
+    "callsites": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
+      "dev": true
+    },
     "caseless": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
       "dev": true
     },
+    "chalk": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+      "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "4.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.2.1.tgz",
+          "integrity": "sha512-9VGjrMsG1vePxcSweQsN20KY/c4zN0h9fLjqAbwbPfahM3t+NL+M9HC8xeXG2I8pX5NoamTGNuomEUFI7fcUjA==",
+          "dev": true,
+          "requires": {
+            "@types/color-name": "^1.1.1",
+            "color-convert": "^2.0.1"
+          }
+        },
+        "color-convert": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+          "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+          "dev": true,
+          "requires": {
+            "color-name": "~1.1.4"
+          }
+        },
+        "color-name": {
+          "version": "1.1.4",
+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+          "dev": true
+        },
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       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
@@ -833,17 +1685,49 @@
         "string-width": "^1.0.2 || 2"
       }
     },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
+      "dev": true
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
+    "write": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+          "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        }
+      }
+    },
     "yallist": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
       "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
+    },
+    "yn": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index 715efdb..ea31602 100644
--- a/package.json
+++ b/package.json
@@ -9,11 +9,13 @@
     "rebuild": "node-gyp rebuild",
     "clean": "node-gyp clean",
     "test": "$(npm bin)/jasmine",
+    "lint": "eslint src examples types --ext .js --ext .ts",
+    "check-tsc": "./node_modules/.bin/tsc examples/srt.ts --outDir ./tsc-lib",
     "postversion": "git push && git push --tags"
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/Eyevinn/node-srt"
+    "url": "git+https://github.com/Eyevinn/node-srt.git"
   },
   "gypfile": true,
   "author": "Eyevinn Technology AB <work@eyevinn.se>",
@@ -23,12 +25,37 @@
   ],
   "license": "MIT",
   "devDependencies": {
+    "@types/node": "^14.0.23",
+    "@typescript-eslint/eslint-plugin": "^3.6.1",
+    "@typescript-eslint/parser": "^3.6.1",
+    "eslint": "^7.4.0",
     "jasmine": "^3.5.0",
-    "node-gyp": "^7.0.0"
+    "node-gyp": "^7.0.0",
+    "ts-node": "^8.10.2",
+    "typescript": "^3.9.6"
   },
   "dependencies": {
     "debug": "^4.1.1",
     "git-clone": "^0.1.0",
     "node-addon-api": "^3.0.0"
-  }
+  },
+  "bugs": {
+    "url": "https://github.com/Eyevinn/node-srt/issues"
+  },
+  "homepage": "https://github.com/Eyevinn/node-srt#readme",
+  "directories": {
+    "example": "examples"
+  },
+  "keywords": [
+    "SRT",
+    "Secure",
+    "Reliable",
+    "Transport",
+    "Network",
+    "Protocol",
+    "UDP",
+    "Retransmission",
+    "Congestion",
+    "Control"
+  ]
 }
diff --git a/src/node-srt.cc b/src/node-srt.cc
index 68db466..fb58d06 100644
--- a/src/node-srt.cc
+++ b/src/node-srt.cc
@@ -261,6 +261,8 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
   Napi::Number option = info[1].As<Napi::Number>();
 
   Napi::Value empty;
+  Napi::Value returnVal;
+
   int32_t optName = option;
   int result = SRT_ERROR;
 
@@ -279,7 +281,7 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
     case SRTO_KMSTATE:
     case SRTO_LATENCY:
     case SRTO_LOSSMAXTTL:
-    case SRTO_MAXBW: 
+    case SRTO_MAXBW:
     case SRTO_MINVERSION:
     case SRTO_OHEADBW:
     case SRTO_PAYLOADSIZE:
@@ -306,7 +308,7 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
       int optValue;
       int optSize = sizeof(optValue);
       result = srt_getsockflag(socketValue, (SRT_SOCKOPT)optName, (void *)&optValue, &optSize);
-      return Napi::Value::From(env, optValue);
+      returnVal = Napi::Value::From(env, optValue);
     }
     case SRTO_RCVSYN:
     case SRTO_MESSAGEAPI:
@@ -318,7 +320,7 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
       bool optValue;
       int optSize = sizeof(optValue);
       result = srt_getsockflag(socketValue, (SRT_SOCKOPT)optName, (void *)&optValue, &optSize);
-      return Napi::Value::From(env, optValue);
+      returnVal = Napi::Value::From(env, optValue);
     }
     case SRTO_PACKETFILTER:
     case SRTO_PASSPHRASE:
@@ -326,7 +328,7 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
       char optValue[512];
       int optSize = sizeof(optValue);
       result = srt_getsockflag(socketValue, (SRT_SOCKOPT)optName, (void *)&optValue, &optSize);
-      return Napi::Value::From(env, std::string(optValue));
+      returnVal = Napi::Value::From(env, std::string(optValue));
     }
     default:
       Napi::Error::New(env, "SOCKOPT not implemented yet").ThrowAsJavaScriptException();
@@ -337,7 +339,7 @@ Napi::Value NodeSRT::GetSockOpt(const Napi::CallbackInfo& info) {
     Napi::Error::New(env, srt_getlasterror_str()).ThrowAsJavaScriptException();
     return empty;
   }
-  return empty;
+  return returnVal;
 }
 
 Napi::Value NodeSRT::GetSockState(const Napi::CallbackInfo& info) {
diff --git a/src/server.js b/src/server.js
index 08df58c..506fd2d 100644
--- a/src/server.js
+++ b/src/server.js
@@ -1,11 +1,14 @@
 const { SRT } = require('../build/Release/node_srt.node');
 const EventEmitter = require("events");
+const debug = require('debug')('srt-server');
 
 const libSRT = new SRT();
 
 class SRTServer extends EventEmitter {
   constructor() {
     super();
+    this.iface = null;
+    this.port = null;
     this.socket = libSRT.createSocket();
   }
 
@@ -13,12 +16,14 @@ class SRTServer extends EventEmitter {
     const iface = address || "0.0.0.0";
     libSRT.bind(this.socket, iface, port);
     libSRT.listen(this.socket, 2);
+    this.iface = address;
+    this.port = port;
     this.emit("listening", iface, port);
     while (true) {
       const fhandle = libSRT.accept(this.socket);
-      console.log("Client connected");
+      debug("New client connected");
     }
   }
 }
 
-module.exports = SRTServer;
\ No newline at end of file
+module.exports = SRTServer;
diff --git a/src/stream.js b/src/stream.js
index 6230950..4e0aa78 100644
--- a/src/stream.js
+++ b/src/stream.js
@@ -1,37 +1,44 @@
-const { Readable, Writable } = require('stream');
+const { Readable, Writable } = require('stream');
 const LIB = require('../build/Release/node_srt.node');
 const debug = require('debug')('srt-stream');
 
+const EPOLLUWAIT_CALL_PERIOD_MS = 500;
+const EPOLLUWAIT_TIMEOUT_MS = 1000;
+const SOCKET_LISTEN_BACKLOG = 10;
+
 /**
  * Example:
- * 
+ *
  * const dest = fs.createWritableStream('./output');
- * 
+ *
  * const srt = new SRTReadStream('0.0.0.0', 1234);
  * srt.listen(readStream => {
  *   readStream.pipe(dest);
  * })
- * 
+ *
  */
 class SRTReadStream extends Readable {
+  // Q: opts not used ?
+  // Q: not better if port (mandatory) is before, and address is optional (default to "0.0.0.0")?
   constructor(address, port, opts) {
     super();
     this.srt = new LIB.SRT();
     this.socket = this.srt.createSocket();
     this.address = address;
     this.port = port;
+    this.fd = null;
     this.readTimer = null;
   }
 
   listen(cb) {
     this.srt.bind(this.socket, this.address, this.port);
-    this.srt.listen(this.socket, 10);
+    this.srt.listen(this.socket, SOCKET_LISTEN_BACKLOG);
 
     const epid = this.srt.epollCreate();
     this.srt.epollAddUsock(epid, this.socket, LIB.SRT.EPOLL_IN | LIB.SRT.EPOLL_ERR);
-    
+
     let t = setInterval(() => {
-      const events = this.srt.epollUWait(epid, 1000);
+      const events = this.srt.epollUWait(epid, EPOLLUWAIT_TIMEOUT_MS);
       events.forEach(event => {
         const status = this.srt.getSockState(event.socket);
         if (status === LIB.SRT.SRTS_BROKEN || status === LIB.SRT.SRTS_NONEXIST || status === LIB.SRT.SRTS_CLOSED) {
@@ -50,7 +57,7 @@ class SRTReadStream extends Readable {
           cb(this);
         }
       });
-    }, 500);
+    }, EPOLLUWAIT_CALL_PERIOD_MS);
   }
 
   connect(cb) {
@@ -61,6 +68,11 @@ class SRTReadStream extends Readable {
     }
   }
 
+  close() {
+    this.srt.close(this.socket);
+    this.fd = null;
+  }
+
   _readStart(fd, size) {
     this.readTimer = setInterval(() => {
       let chunk = this.srt.read(fd, size);
@@ -120,4 +132,4 @@ class SRTWriteStream extends Writable {
 module.exports = {
   SRTReadStream,
   SRTWriteStream
-}
\ No newline at end of file
+};
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..0aee277
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,6 @@
+{
+  "compilerOptions": {
+    "allowJs": true
+  },
+  "include": ["src", "types", "examples"]
+}
diff --git a/types/srt-api.d.ts b/types/srt-api.d.ts
new file mode 100644
index 0000000..0ee237a
--- /dev/null
+++ b/types/srt-api.d.ts
@@ -0,0 +1,189 @@
+declare module "srt" {
+  class SRT {
+    /**
+     *
+     * @param sender
+     * @returns SRTSOCKET identifier (integer value)
+     */
+    createSocket(sender?: boolean): number
+
+    /**
+     *
+     * @param socket
+     * @param address
+     * @param port
+     */
+    bind(socket: number, address: string, port: number): SRTResult
+
+    /**
+     *
+     * @param socket
+     * @param backlog
+     */
+    listen(socket: number, backlog: number): SRTResult
+
+    /**
+     *
+     * @param socket
+     * @param host
+     * @param port
+     */
+    connect(socket: number, host: string, port: number): SRTResult
+
+    /**
+     *
+     * @param socket
+     * @returns File descriptor of incoming connection pipe
+     */
+    accept(socket: number): SRTFileDescriptor
+
+    /**
+     *
+     * @param socket
+     */
+    close(socket: number): SRTResult
+
+    /**
+     *
+     * @param socket
+     * @param chunkSize
+     */
+    read(socket: number, chunkSize: number): Buffer
+
+    /**
+     *
+     * @param socket
+     * @param chunk
+     */
+    write(socket: number, chunk: Buffer): SRTResult
+
+    /**
+     *
+     * @param socket
+     * @param option
+     * @param value
+     */
+    setSockOpt(socket: number, option: number, value: SRTSocketOptValue): number
+
+    /**
+     *
+     * @param socket
+     * @param option
+     */
+    getSockOpt(socket: number, option: number): SRTSocketOptValue
+
+    /**
+     *
+     * @param socket
+     */
+    getSockState(socket: number): SRTSockStatus
+
+    /**
+     * @returns epid
+     */
+    epollCreate(): number
+
+    /**
+     *
+     * @param epid
+     * @param socket
+     * @param events
+     */
+    epollAddUsock(epid: number, socket: number, events: number): SRTResult
+
+    /**
+     *
+     * @param epid
+     * @param msTimeOut
+     */
+    epollUWait(epid: number, msTimeOut: number): SRTPollingEvent[]
+  }
+
+  interface SRTPollingEvent {
+    socket: SRTFileDescriptor
+    events: number
+  }
+
+  type SRTFileDescriptor = number;
+
+  type SRTSocketOptValue = boolean | number | string
+
+  enum SRTResult {
+    SRT_ERROR = -1,
+    SRT_OK = 0
+  }
+
+  enum SRTSockOpt {
+    SRTO_MSS = 0,             // the Maximum Transfer Unit
+    SRTO_SNDSYN = 1,          // if sending is blocking
+    SRTO_RCVSYN = 2,          // if receiving is blocking
+    SRTO_ISN = 3,             // Initial Sequence Number (valid only after srt_connect or srt_accept-ed sockets)
+    SRTO_FC = 4,              // Flight flag size (window size)
+    SRTO_SNDBUF = 5,          // maximum buffer in sending queue
+    SRTO_RCVBUF = 6,          // UDT receiving buffer size
+    SRTO_LINGER = 7,          // waiting for unsent data when closing
+    SRTO_UDP_SNDBUF = 8,      // UDP sending buffer size
+    SRTO_UDP_RCVBUF = 9,      // UDP receiving buffer size
+    // XXX Free space for 2 options
+    // after deprecated ones are removed
+    SRTO_RENDEZVOUS = 12,     // rendezvous connection mode
+    SRTO_SNDTIMEO = 13,       // send() timeout
+    SRTO_RCVTIMEO = 14,       // recv() timeout
+    SRTO_REUSEADDR = 15,      // reuse an existing port or create a new one
+    SRTO_MAXBW = 16,          // maximum bandwidth (bytes per second) that the connection can use
+    SRTO_STATE = 17,          // current socket state, see UDTSTATUS, read only
+    SRTO_EVENT = 18,          // current available events associated with the socket
+    SRTO_SNDDATA = 19,        // size of data in the sending buffer
+    SRTO_RCVDATA = 20,        // size of data available for recv
+    SRTO_SENDER = 21,         // Sender mode (independent of conn mode), for encryption, tsbpd handshake.
+    SRTO_TSBPDMODE = 22,      // Enable/Disable TsbPd. Enable -> Tx set origin timestamp, Rx deliver packet at origin time + delay
+    SRTO_LATENCY = 23,        // NOT RECOMMENDED. SET: to both SRTO_RCVLATENCY and SRTO_PEERLATENCY. GET: same as SRTO_RCVLATENCY.
+    SRTO_TSBPDDELAY = 23,     // DEPRECATED. ALIAS: SRTO_LATENCY
+    SRTO_INPUTBW = 24,        // Estimated input stream rate.
+    SRTO_OHEADBW,             // MaxBW ceiling based on % over input stream rate. Applies when UDT_MAXBW=0 (auto).
+    SRTO_PASSPHRASE = 26,     // Crypto PBKDF2 Passphrase size[0,10..64] 0:disable crypto
+    SRTO_PBKEYLEN,            // Crypto key len in bytes {16,24,32} Default: 16 (128-bit)
+    SRTO_KMSTATE,             // Key Material exchange status (UDT_SRTKmState)
+    SRTO_IPTTL = 29,          // IP Time To Live (passthru for system sockopt IPPROTO_IP/IP_TTL)
+    SRTO_IPTOS,               // IP Type of Service (passthru for system sockopt IPPROTO_IP/IP_TOS)
+    SRTO_TLPKTDROP = 31,      // Enable receiver pkt drop
+    SRTO_SNDDROPDELAY = 32,   // Extra delay towards latency for sender TLPKTDROP decision (-1 to off)
+    SRTO_NAKREPORT = 33,      // Enable receiver to send periodic NAK reports
+    SRTO_VERSION = 34,        // Local SRT Version
+    SRTO_PEERVERSION,         // Peer SRT Version (from SRT Handshake)
+    SRTO_CONNTIMEO = 36,      // Connect timeout in msec. Ccaller default: 3000, rendezvous (x 10)
+    // deprecated: SRTO_TWOWAYDATA, SRTO_SNDPBKEYLEN, SRTO_RCVPBKEYLEN (@c below)
+    _DEPRECATED_SRTO_SNDPBKEYLEN = 38, // (needed to use inside the code without generating -Wswitch)
+    //
+    SRTO_SNDKMSTATE = 40,     // (GET) the current state of the encryption at the peer side
+    SRTO_RCVKMSTATE,          // (GET) the current state of the encryption at the agent side
+    SRTO_LOSSMAXTTL,          // Maximum possible packet reorder tolerance (number of packets to receive after loss to send lossreport)
+    SRTO_RCVLATENCY,          // TsbPd receiver delay (mSec) to absorb burst of missed packet retransmission
+    SRTO_PEERLATENCY,         // Minimum value of the TsbPd receiver delay (mSec) for the opposite side (peer)
+    SRTO_MINVERSION,          // Minimum SRT version needed for the peer (peers with less version will get connection reject)
+    SRTO_STREAMID,            // A string set to a socket and passed to the listener's accepted socket
+    SRTO_CONGESTION,          // Congestion controller type selection
+    SRTO_MESSAGEAPI,          // In File mode, use message API (portions of data with boundaries)
+    SRTO_PAYLOADSIZE,         // Maximum payload size sent in one UDP packet (0 if unlimited)
+    SRTO_TRANSTYPE = 50,      // Transmission type (set of options required for given transmission type)
+    SRTO_KMREFRESHRATE,       // After sending how many packets the encryption key should be flipped to the new key
+    SRTO_KMPREANNOUNCE,       // How many packets before key flip the new key is annnounced and after key flip the old one decommissioned
+    SRTO_ENFORCEDENCRYPTION,  // Connection to be rejected or quickly broken when one side encryption set or bad password
+    SRTO_IPV6ONLY,            // IPV6_V6ONLY mode
+    SRTO_PEERIDLETIMEO,       // Peer-idle timeout (max time of silence heard from peer) in [ms]
+    // (some space left)
+    SRTO_PACKETFILTER = 60          // Add and configure a packet filter
+  }
+
+  enum SRTSockStatus {
+    SRTS_INIT = 1,
+    SRTS_OPENED,
+    SRTS_LISTENING,
+    SRTS_CONNECTING,
+    SRTS_CONNECTED,
+    SRTS_BROKEN,
+    SRTS_CLOSING,
+    SRTS_CLOSED,
+    SRTS_NONEXIST
+  }
+}
diff --git a/types/srt-server.d.ts b/types/srt-server.d.ts
new file mode 100644
index 0000000..eb880e4
--- /dev/null
+++ b/types/srt-server.d.ts
@@ -0,0 +1,22 @@
+/// <reference types="node" />
+
+declare module "srt" {
+
+  import {EventEmitter} from 'events';
+
+  interface SRTServerBindOpts {
+    /**
+     * default: "0.0.0.0"
+     */
+    address?: string
+
+    port: number
+  }
+
+  type SRTServerEvent = "listening"; /*| "foobar" */
+
+  class SRTServer extends EventEmitter /*<SRTServerEvent>*/ {
+    listen(opts: SRTServerBindOpts): void
+  }
+
+}
diff --git a/types/srt-stream.d.ts b/types/srt-stream.d.ts
new file mode 100644
index 0000000..55f03f2
--- /dev/null
+++ b/types/srt-stream.d.ts
@@ -0,0 +1,53 @@
+
+import { Writable, Readable } from "stream";
+
+declare module "srt" {
+
+  interface SRTConnectionState {
+    readonly srt: SRT;
+    readonly socket: number;
+    readonly address: string;
+    readonly port: number;
+  }
+
+  interface SRTCallerState extends SRTConnectionState {
+    readonly fd: SRTFileDescriptor | null;
+    connect(callback: (state: SRTCallerState) => void);
+    close();
+  }
+
+  interface SRTListenerState extends SRTConnectionState {
+    listen(callback: (state: SRTListenerState) => void);
+  }
+
+  class SRTReadStream extends Readable implements SRTCallerState, SRTListenerState {
+
+    readonly srt: SRT;
+    readonly fd: SRTFileDescriptor | null;
+    readonly socket: number;
+    readonly address: string;
+    readonly port: number;
+    readonly readTimer: number | null;
+
+    constructor(address: string, port: number, opts?: unknown);
+
+    connect(callback: (state: SRTCallerState) => void);
+    close();
+
+    listen(callback: (state: SRTListenerState) => void);
+  }
+
+  class SRTWriteStream extends Writable implements SRTCallerState {
+
+    readonly srt: SRT;
+    readonly socket: number;
+    readonly address: string;
+    readonly port: number;
+    readonly fd: SRTFileDescriptor | null;
+
+    constructor(address: string, port: number, opts?: unknown);
+
+    connect(callback: (state: SRTCallerState) => void);
+    close();
+  }
+}