Get started with Liveblocks and Next.js

Liveblocks is a realtime collaboration infrastructure for building performant collaborative experiences. Follow the following steps to start adding collaboration to your Next.js /app directory application using the hooks from the @liveblocks/react package.

Quickstart

1. Install Liveblocks

   Every package should use the same version.

   Terminal

   npm

   npm install @liveblocks/client @liveblocks/react

2. Initialize the liveblocks.config.ts file

   We can use this file later to define types for our application.

   Terminal

   npm

   npx create-liveblocks-app@latest --init --framework react

3. Create a Liveblocks room

   Liveblocks uses the concept of rooms, separate virtual spaces where people collaborate, and to create a realtime experience, multiple users must be connected to the same room. When using Next.js’ /app router, we recommend creating your room in a Room.tsx file in the same directory as your current route.

   Set up a Liveblocks client with LiveblocksProvider, join a room with RoomProvider, and use ClientSideSuspense to add a loading spinner to your app.

   app/Room.tsx

   "use client";
   import { ReactNode } from "react";import {  LiveblocksProvider,  RoomProvider,  ClientSideSuspense,} from "@liveblocks/react/suspense";
   export function Room({ children }: { children: ReactNode }) {  return (    <LiveblocksProvider publicApiKey={"pk_prod_xxxxxxxxxx…xxxxxxxxpk_prod_xxxxxxxxxxxxxxxxxxxxxxxx"}>      <RoomProvider id="my-room">        <ClientSideSuspense fallback={<div>Loading…</div>}>          {children}        </ClientSideSuspense>      </RoomProvider>    </LiveblocksProvider>  );}

4. Add the Liveblocks room to your page

   After creating your room file, it’s time to join it. Import your room into your page.tsx file, and place your collaborative app components inside it.

   app/page.tsx

   import { Room } from "./Room";import { CollaborativeApp } from "./CollaborativeApp";
   export default function Page() {  return (    <Room>      <CollaborativeApp />    </Room>  );}

5. Create a multiplayer input

   From this point, you can use Liveblocks hooks to create your multiplayer app. For example, you can create a shared input that stays in sync across users. To set it up, first define your storage type in liveblocks.config.ts. An input LiveObject can store the text of the input.

   liveblocks.config.ts

   import { LiveObject } from "@liveblocks/client";
   declare global {  interface Liveblocks {    Storage: {      input: LiveObject<{ text: string }>;    };  }}
   export {};

   Next, set an initial value for input on RoomProvider, a new LiveObject with a text value.

   app/Room.tsx

   "use client";
   import { ReactNode } from "react";import { LiveObject } from "@liveblocks/client";import {  LiveblocksProvider,  RoomProvider,  ClientSideSuspense,} from "@liveblocks/react/suspense";
   export function Room({ children }: { children: ReactNode }) {  return (    <LiveblocksProvider publicApiKey={"pk_prod_xxxxxxxxxx…xxxxxxxxpk_prod_xxxxxxxxxxxxxxxxxxxxxxxx"}>      <RoomProvider        id="my-room"        initialStorage={{          input: new LiveObject({ text: "" }),        }}      >        <ClientSideSuspense fallback={<div>Loading…</div>}>          {children}        </ClientSideSuspense>      </RoomProvider>    </LiveblocksProvider>  );}

   Now, use useStorage to read the value of input.text and useMutation to update it.

   app/CollaborativeApp.tsx

   "use client";
   import { useStorage, useMutation } from "@liveblocks/react/suspense";
   export function CollaborativeApp() {  const text = useStorage((root) => root.input.text);
     const updateText = useMutation(({ storage }, newText: string) => {    const input = storage.get("input");    input.set("text", newText);  }, []);
     return (    <input      value={text}      onChange={(e) => updateText(e.target.value)}      placeholder="Start typing…"    />  );}

   Open your app in two browser tabs to see the input update in realtime.

6. Show custom presence

   useOthers allows you to access a list of users that are currently connected to the room. Build a simple avatar stack from the list of connected users.

   app/Avatars.tsx

   "use client";
   import { useOthers } from "@liveblocks/react/suspense";
   export function Avatars() {  const others = useOthers();
     return (    <div style={{ display: "flex", alignItems: "center" }}>      {others.map(({ connectionId }, index) => (        <img          key={connectionId}          src={`https://liveblocks.io/avatars/avatar-${connectionId % 30}.png`}          alt=""          width={28}          height={28}          style={{            borderRadius: "50%",            border: "2px solid white",            marginLeft: index === 0 ? 0 : -8,          }}        />      ))}    </div>  );}

   Open your app in two browser tabs to see avatars appear for each user.

7. Next: set up authentication

   By default, Liveblocks is configured to work without an authentication endpoint where everyone automatically has access to rooms. This approach is great for prototyping and marketing pages where setting up your own security isn’t always required. If you want to limit access to a room for certain users, you’ll need to set up an authentication endpoint to enable permissions.

   Set up authentication

What to read next

Congratulations! You now have set up the foundation to start building collaborative experiences for your React application.

• @liveblocks/react API Reference
• Next.js and React guides
• How to use Liveblocks presence with React
• How to use Storage with React

Examples using Next.js