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feat: Quickstart and client for Nuxt (#4176)
# Description of Changes The PR implements the following updates: - Create `nuxt-ts` template - Add Nuxt Quickstart Docs <!-- Please describe your change, mention any related tickets, and so on here. --> # Screenshots - `nuxt-ts` template <img width="1446" height="894" alt="image" src="https://github.com/user-attachments/assets/743a946a-3570-4c0b-823a-c919be722d0a" /> - Nuxt Quickstart Docs <img width="1460" height="898" alt="image" src="https://github.com/user-attachments/assets/a7014d04-6dc1-4e1d-ac39-051c9ef7c09e" /> # API and ABI breaking changes <!-- If this is an API or ABI breaking change, please apply the corresponding GitHub label. --> # Expected complexity level and risk <!-- How complicated do you think these changes are? Grade on a scale from 1 to 5, where 1 is a trivial change, and 5 is a deep-reaching and complex change. This complexity rating applies not only to the complexity apparent in the diff, but also to its interactions with existing and future code. If you answered more than a 2, explain what is complex about the PR, and what other components it interacts with in potentially concerning ways. --> # Testing <!-- Describe any testing you've done, and any testing you'd like your reviewers to do, so that you're confident that all the changes work as expected! --> - [ ] <!-- maybe a test you want to do --> - [ ] <!-- maybe a test you want a reviewer to do, so they can check it off when they're satisfied. --> --------- Co-authored-by: = <cloutiertyler@gmail.com>
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---
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title: Nuxt Quickstart
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sidebar_label: Nuxt
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slug: /quickstarts/nuxt
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hide_table_of_contents: true
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---
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import { InstallCardLink } from "@site/src/components/InstallCardLink";
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import { StepByStep, Step, StepText, StepCode } from "@site/src/components/Steps";
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Get a SpacetimeDB Nuxt app running in under 5 minutes.
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## Prerequisites
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- [Node.js](https://nodejs.org/) 18+ installed
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- [SpacetimeDB CLI](https://spacetimedb.com/install) installed
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<InstallCardLink />
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---
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<StepByStep>
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<Step title="Create your project">
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<StepText>
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Run the `spacetime dev` command to create a new project with a SpacetimeDB module and Nuxt client.
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This will start the local SpacetimeDB server, publish your module, generate TypeScript bindings, and start the Nuxt development server.
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</StepText>
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<StepCode>
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```bash
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spacetime dev --template nuxt-ts
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```
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</StepCode>
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</Step>
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<Step title="Open your app">
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<StepText>
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Navigate to [http://localhost:5173](http://localhost:5173) to see your app running.
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The template includes a basic Nuxt app connected to SpacetimeDB.
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</StepText>
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</Step>
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<Step title="Explore the project structure">
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<StepText>
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Your project contains both server and client code.
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Edit `spacetimedb/src/index.ts` to add tables and reducers. Edit `components/AppContent.vue` to build your UI, and `app.vue` to configure the SpacetimeDB connection.
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</StepText>
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<StepCode>
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```
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my-spacetime-app/
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├── spacetimedb/ # Your SpacetimeDB module
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│ └── src/
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│ └── index.ts # SpacetimeDB module logic
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├── app.vue # Root component with provider
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├── components/
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│ └── AppContent.vue # Main UI component
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├── server/
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│ └── api/
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│ └── people.get.ts # Server-side data fetching
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├── module_bindings/ # Auto-generated types
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├── nuxt.config.ts # Nuxt configuration
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└── package.json
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```
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</StepCode>
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</Step>
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<Step title="Understand tables and reducers">
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<StepText>
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Open `spacetimedb/src/index.ts` to see the module code. The template includes a `person` table and two reducers: `add` to insert a person, and `say_hello` to greet everyone.
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Tables store your data. Reducers are functions that modify data — they're the only way to write to the database.
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</StepText>
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<StepCode>
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```typescript
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import { schema, table, t } from 'spacetimedb/server';
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export const spacetimedb = schema(
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table(
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{ name: 'person', public: true },
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{
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name: t.string(),
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}
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)
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);
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spacetimedb.reducer('add', { name: t.string() }, (ctx, { name }) => {
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ctx.db.person.insert({ name });
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});
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spacetimedb.reducer('say_hello', (ctx) => {
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for (const person of ctx.db.person.iter()) {
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console.info(`Hello, ${person.name}!`);
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}
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console.info('Hello, World!');
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});
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```
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</StepCode>
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</Step>
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<Step title="Test with the CLI">
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<StepText>
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Use the SpacetimeDB CLI to call reducers and query your data directly.
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</StepText>
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<StepCode>
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```bash
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# Call the add reducer to insert a person
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spacetime call <database-name> add Alice
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# Query the person table
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spacetime sql <database-name> "SELECT * FROM person"
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name
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---------
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"Alice"
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# Call say_hello to greet everyone
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spacetime call <database-name> say_hello
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# View the module logs
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spacetime logs <database-name>
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2025-01-13T12:00:00.000000Z INFO: Hello, Alice!
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2025-01-13T12:00:00.000000Z INFO: Hello, World!
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```
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</StepCode>
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</Step>
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<Step title="Understand server-side rendering">
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<StepText>
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The SpacetimeDB SDK works both server-side and client-side. The template uses a hybrid approach:
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- **Server API route** (`server/api/people.get.ts`): Fetches initial data during SSR for fast page loads
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- **Client composables**: Maintain a real-time WebSocket connection for live updates
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The server API route connects to SpacetimeDB, subscribes, fetches data, and disconnects.
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</StepText>
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<StepCode>
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```typescript
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// server/api/people.get.ts
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import { DbConnection } from '../../module_bindings';
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export default defineEventHandler(async () => {
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return new Promise((resolve, reject) => {
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DbConnection.builder()
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.withUri(process.env.SPACETIMEDB_HOST!)
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.withModuleName(process.env.SPACETIMEDB_DB_NAME!)
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.onConnect((conn) => {
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conn.subscriptionBuilder()
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.onApplied(() => {
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const people = Array.from(conn.db.person.iter());
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conn.disconnect();
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resolve(people);
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})
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.subscribe('SELECT * FROM person');
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})
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.build();
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});
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});
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```
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</StepCode>
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</Step>
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<Step title="Set up the SpacetimeDB provider">
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<StepText>
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The root `app.vue` wraps your app in a `SpacetimeDBProvider` that manages the WebSocket connection. The provider is wrapped in `ClientOnly` so it only runs in the browser, while SSR uses the server API route for initial data.
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</StepText>
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<StepCode>
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```vue
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<!-- app.vue -->
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<template>
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<ClientOnly>
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<SpacetimeDBProvider :connection-builder="connectionBuilder">
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<AppContent />
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</SpacetimeDBProvider>
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<template #fallback>
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<AppContent />
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</template>
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</ClientOnly>
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</template>
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<script setup lang="ts">
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import { SpacetimeDBProvider } from 'spacetimedb/vue';
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import { DbConnection } from './module_bindings';
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const HOST = import.meta.env.VITE_SPACETIMEDB_HOST ?? 'ws://localhost:3000';
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const DB_NAME = import.meta.env.VITE_SPACETIMEDB_DB_NAME ?? 'nuxt-ts';
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const connectionBuilder = import.meta.client
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? DbConnection.builder()
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.withUri(HOST)
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.withModuleName(DB_NAME)
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.withToken(localStorage.getItem('auth_token') || undefined)
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.onConnect((_conn, identity, token) => {
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localStorage.setItem('auth_token', token);
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console.log('Connected:', identity.toHexString());
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})
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.onDisconnect(() => console.log('Disconnected'))
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.onConnectError((_ctx, err) => console.log('Error:', err))
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: undefined;
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</script>
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```
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</StepCode>
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</Step>
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<Step title="Use composables and SSR data together">
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<StepText>
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Use `useFetch` to load initial data server-side, then Vue composables for real-time updates on the client. The component displays server-fetched data immediately while the WebSocket connection establishes.
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</StepText>
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<StepCode>
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```vue
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<!-- components/AppContent.vue -->
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<script setup lang="ts">
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import { ref, computed } from 'vue';
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import { tables, reducers } from '../module_bindings';
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// Fetch initial data server-side for SSR
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const { data: initialPeople } = await useFetch('/api/people');
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// On the client, use real-time composables
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let conn, people, addReducer;
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if (import.meta.client) {
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const { useSpacetimeDB, useTable, useReducer } = await import('spacetimedb/vue');
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conn = useSpacetimeDB();
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[people] = useTable(tables.person);
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addReducer = useReducer(reducers.add);
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}
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// Use real-time data once connected, fall back to SSR data
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const displayPeople = computed(() => {
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if (conn?.isActive && people?.value) return people.value;
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return initialPeople.value ?? [];
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});
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</script>
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```
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</StepCode>
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</Step>
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</StepByStep>
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## Next steps
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- Read the [TypeScript SDK Reference](/sdks/typescript) for detailed API docs

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