Get started – Get started with Liveblocks, CodeMirror, Yjs, and Svelte

Liveblocks is a realtime collaboration infrastructure for building performant collaborative experiences. Follow the following steps to start adding collaboration to your Svelte application using the APIs from the @liveblocks/yjs package.

Quickstart

1. Install Liveblocks, Yjs, and CodeMirror

   Every Liveblocks package should use the same version.

   $npm install @liveblocks/client @liveblocks/yjs yjs codemirror @codemirror/lang-javascript y-codemirror.next

2. Initialize the liveblocks.config.ts file

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

   $npx create-liveblocks-app@latest --init --framework javascript

3. Set up your collaborative CodeMirror code editor

   Editor.svelte

   <script>import { onMount, onDestroy } from "svelte";import { createClient } from "@liveblocks/client";import { LiveblocksYjsProvider } from "@liveblocks/yjs";import * as Y from "yjs";import { yCollab } from "y-codemirror.next";import { EditorView, basicSetup } from "codemirror";import { EditorState } from "@codemirror/state";import { javascript } from "@codemirror/lang-javascript";
   let parent;
   // Set up Liveblocks clientconst client = createClient({  publicApiKey: "pk_prod_xxxx…xxxxxxpk_prod_xxxxxxxxxxxxxxxxxxxxxxxx",});
   onMount(() => {  // Enter a multiplayer room  const { room, leave } = client.enterRoom("my-room");
     // Set up Yjs document, shared text, undo manager, and Liveblocks Yjs provider  const yDoc = new Y.Doc();  const yText = yDoc.getText("codemirror");  const undoManager = new Y.UndoManager(yText);  const yProvider = new LiveblocksYjsProvider(room, yDoc);
     // Set up CodeMirror and extensions  const state = EditorState.create({    doc: yText.toString(),    extensions: [      basicSetup,      javascript(),      yCollab(yText, yProvider.awareness, { undoManager }),    ],  });
     // Attach CodeMirror to element  const view = new EditorView({    state,    parent,  });
     return () => {    view.destroy();    leave();  };});</script>
   <div bind:this={parent}></div>

4. 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 for your collaborative CodeMirror code editor inside your Svelte application.

• @liveblocks/yjs API Reference
• @liveblocks/client API Reference
• CodeMirror website