JavaScript Client for Nakama Server Written in TypeScript

JavaScript Client for Nakama Server Written in TypeScript

Nakama JavaScript client JavaScript client for Nakama server written in TypeScript. For browser and React Native projects.

Nakama JavaScript client

JavaScript client for Nakama server written in TypeScript. For browser and React Native projects.

Nakama is an open-source server designed to power modern games and apps. Features include user accounts, chat, social, matchmaker, realtime multiplayer, and much more.

This client implements the full API and socket options with the server. It's written in TypeScript with minimal dependencies to be compatible with all modern browsers and React Native.

Full documentation is online -

Getting Started

You'll need to setup the server and database before you can connect with the client. The simplest way is to use Docker but have a look at the server documentation for other options.

  1. Install and run the servers. Follow these instructions.

  2. Import the client into your project. It's available on NPM and can be also be added to a project with Bower or other package managers.

    yarn add "@heroiclabs/nakama-js"

    You'll now see the code in the "node_modules" folder and package listed in your "package.json".

    Optionally, if you would like to use the Protocol Buffers wire format with your sockets, you can import the adapter found in this package:

    yarn add "@heroiclabs/nakama-js-protobuf"
  3. Use the connection credentials to build a client object.

    import {Client} from "@heroiclabs/nakama-js";
    var useSSL = false; // Enable if server is run with an SSL certificate.
    var client = new Client("defaultkey", "", "7350", useSSL);


The client object has many methods to execute various features in the server or open realtime socket connections with the server.


There's a variety of ways to authenticate with the server. Authentication can create a user if they don't already exist with those credentials. It's also easy to authenticate with a social profile from Google Play Games, Facebook, Game Center, etc.

var email = "[email protected]";
var password = "batsignal";
const session = await client.authenticateEmail(email, password);;


When authenticated the server responds with an auth token (JWT) which contains useful properties and gets deserialized into a Session object.; // raw JWT token;;"Session has expired?", session.isexpired( / 1000));
const expiresat = session.expires_at;
console.warn("Session will expire at", new Date(expiresat * 1000).toISOString());

It is recommended to store the auth token from the session and check at startup if it has expired. If the token has expired you must reauthenticate. The expiry time of the token can be changed as a setting in the server.

// Assume we've stored the auth token in browser Web Storage.
const authtoken = window.localStorage.getItem("nkauthtoken");
const session = nakamajs.Session.restore(authtoken);
if (session.isexpired( / 1000)) {
    console.warn("Session has expired. Must reauthenticate.");


The client includes lots of builtin APIs for various features of the game server. These can be accessed with the methods which return Promise objects. It can also call custom logic as RPC functions on the server. These can also be executed with a socket object.

All requests are sent with a session object which authorizes the client.

const account = await client.getAccount(session);;;;


The client can create one or more sockets with the server. Each socket can have it's own event listeners registered for responses received from the server.

const secure = false; // Enable if server is run with an SSL certificate
const trace = false;
const socket = client.createSocket(secure, trace);
socket.ondisconnect = (evt) => {"Disconnected", evt);

const session = await socket.connect(session);
// Socket is open.

If you are using the optional protocol buffer adapter, pass the adapter to the Socket object during construction:

import {WebSocketAdapterPb} from "@heroiclabs/nakama-js-protobuf"

const secure = false; // Enable if server is run with an SSL certificate
const trace = false;
const socket = client.createSocket(secure, trace, new WebSocketAdapterPb());

There's many messages for chat, realtime, status events, notifications, etc. which can be sent or received from the socket.

socket.onchannelmessage = (message) => {"Message received from channel", message.channel_id);"Received message", message);

// 1 = room, 2 = Direct Message, 3 = Group
const type : number = 1;
const roomname = "mychannel";
const persistence : boolean = false;
const hidden : boolean = false;

const channel = await socket.joinChat(type, roomname, persistence, hidden);

const message = { "hello": "world" };
socket.writeChatMessage(, message);


The development roadmap is managed as GitHub issues and pull requests are welcome. If you're interested in enhancing the code please open an issue to discuss the changes or drop in and discuss it in the community forum.

Source Builds

Ensure you are using Node v12.18.1.

The codebase is multi-package monorepo written in TypeScript and can be built with esbuild. All dependencies are managed with Yarn.

To build from source, install dependencies and build the nakama-js and nakama-js-protobuf subrepositories:

yarn workspace @heroiclabs/nakama-js install && yarn workspace @heroiclabs/nakama-js build
yarn workspace @heroiclabs/nakama-js-protobuf install && yarn workspace @heroiclabs/nakama-js-protobuf build

Run Tests

To run tests you will need to run the server and database. Most tests are written as integration tests which execute against the server. A quick approach we use with our test workflow is to use the Docker compose file described in the documentation.

Tests are run against each workspace bundle; if you have made source code changes, you should yarn workspace <workspace> build prior to running tests.

docker-compose -f ./docker-compose.yml up
yarn workspace @heroiclabs/nakama-js-test run test

Protocol Buffer Web Socket Adapter

To update the generated Typescript required for using the protocol buffer adapter, run the following:

npx protoc \
--plugin="./node_modules/.bin/protoc-gen-ts_proto" \
--proto_path=$GOPATH/src \
--ts_proto_out=packages/nakama-js-protobuf \
--ts_proto_opt=snakeToCamel=false \
--ts_proto_opt=useOptionals=true \
--ts_proto_opt=oneof=unions \
$GOPATH/src/ \

Release Process

To release onto NPM if you have access to the "@heroiclabs" organization you can use Yarn.

yarn workspace <workspace> run build && yarn workspace <workspace> npm publish --access=public

Download Details:

Author: heroiclabs


Source Code:

javascript typescript

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

What is TypeScript? Why TypeScript? and Why Not TypeScript?

TypeScript extends JavaScript by adding Types. There are many great reasons to switch to TypeScript. Especially if your team uses JavaScript. There are some reasons to not use TypeScript as there are with any language or framework.

TypeScript Tutorial For JavaScript Developers - TypeScript Basics

TypeScript Tutorial For JavaScript Developers - TypeScript Basics. I will show you guys 4 example of JavaScript code, and how to convert it to TypeScript. This is a typescript beginners tutorial.

JavaScript Shopping Cart - Javascript Project for Beginners

JavaScript Shopping Cart - javascript shopping cart tutorial for beginnersBuy me a coffee 🍺 Code: https://bit....

The essential JavaScript concepts that you should understand

The essential JavaScript concepts that you should understand - For successful developing and to pass a work interview

Por qué DEBES aprender TYPESCRIPT (Typescript vs Javascript)

Habéis oido hablar de TypeScript? Porqué se está utilizando y qué aporta que no tenga JavaScript? Se puede utilizar con Angular o con React? En el backend? En éste vídeo os explico porqué utilizo TypeScript y cómo instalarlo!