diff --git a/.npmignore b/.npmignore
index 9a8d375..8428db1 100644
--- a/.npmignore
+++ b/.npmignore
@@ -7,6 +7,7 @@ CONTRIBUTING.md
 CODE_OF_CONDUCT.md
 README.md
 .releaserc
+jsconfig.json
 
 # Config files
 .babelrc
diff --git a/jsconfig.json b/jsconfig.json
new file mode 100644
index 0000000..43bc06c
--- /dev/null
+++ b/jsconfig.json
@@ -0,0 +1,8 @@
+{
+    "compilerOptions": {
+        "target": "es6",
+        "allowSyntheticDefaultImports": true,
+        "checkJs": true
+    },
+    "exclude": ["node_modules", "coverage", ".github"]
+}
\ No newline at end of file
diff --git a/src/TcpServer.js b/src/TcpServer.js
index ce2d348..b536984 100644
--- a/src/TcpServer.js
+++ b/src/TcpServer.js
@@ -5,10 +5,17 @@ const Sockets = NativeModules.TcpSockets;
 import TcpSocket from './TcpSocket';
 
 export default class TcpServer extends TcpSocket {
+    /**
+     * @param {number} id
+     * @param {import("react-native").NativeEventEmitter} eventEmitter
+     * @param {(socket: TcpSocket) => void} connectionCallback
+     */
     constructor(id, eventEmitter, connectionCallback) {
         super(id, eventEmitter);
         this.connectionCallback = connectionCallback;
+        /** @type {TcpSocket[]} */
         this._connections = [];
+        this._eventEmitter = eventEmitter;
     }
 
     close() {
@@ -16,10 +23,17 @@ export default class TcpServer extends TcpSocket {
         this._connections.forEach((clientSocket) => clientSocket.destroy());
     }
 
+    /**
+     * @param {(arg0: number) => void} callback
+     */
     getConnections(callback) {
         callback(this._connections.length);
     }
 
+    /**
+     * @param {{ port: number; host: any; }} options
+     * @param {(arg0: any) => void} callback
+     */
     listen(options, callback) {
         let gotOptions = {};
         // Normalize args
@@ -45,6 +59,9 @@ export default class TcpServer extends TcpSocket {
         return this;
     }
 
+    /**
+     * @param {{ id: number; address: string; }} info
+     */
     _onConnection(info) {
         const socket = new TcpSocket(info.id, this._eventEmitter);
         socket._registerEvents();
diff --git a/src/index.js b/src/index.js
index e1a13a7..4552ba2 100644
--- a/src/index.js
+++ b/src/index.js
@@ -12,10 +12,17 @@ class TCPSockets {
         this._eventEmitter = new NativeEventEmitter(Sockets);
     }
 
+    /**
+     * @param {(socket: Socket) => void} connectionListener
+     */
     createServer(connectionListener) {
         return new Server(this.instances++, this._eventEmitter, connectionListener);
     }
 
+    /**
+     * @param {{ host: string; port: number; timeout: number; }} options
+     * @param {(address: string) => void} callback
+     */
     createConnection(options, callback) {
         const tcpSocket = new Socket(this.instances++, this._eventEmitter);
         return tcpSocket.connect(options, callback);