HTTP SDK client for the Rebase backend — typed CRUD, auth, storage, realtime WebSockets, offline / local-first sync, admin, cron, and custom functions.

Installation

pnpm add @rebasepro/client

ESM-only: "type": "module" with no CommonJS build, so it is loaded with import. require() of it resolves only on Node 22.12+, which supports require(esm).

What This Package Does

@rebasepro/client is the primary SDK for interacting with a Rebase backend from any JavaScript/TypeScript environment (browser, Node.js, edge). It creates a single client instance that provides:

Collection CRUD with a fluent query builder (.where(), .orderBy(), .limit(), etc.)
Authentication — email/password, Google, 10+ OAuth providers, session management, password reset
Admin — user CRUD for admins
Storage — file upload, download, delete, list
Realtime — WebSocket subscriptions for collection and snapshot changes
Offline / local-first sync (opt-in) — a local row database, writes that apply instantly offline and replay when the connection returns, and live queries
Cron — list, trigger, and manage cron jobs
Custom functions — invoke server-side Hono route functions
Type-safe data proxy — client.data.products auto-maps to the products collection

Key Exports

Client Factory

Export	Description
`createRebaseClient<DB>(options)`	Create a `RebaseClient` instance. Generic `DB` parameter enables type-safe `client.data.*` access.
`RebaseClient<DB>`	The client type — includes `auth`, `admin`, `cron`, `functions`, `storage`, `ws`, `data`, `call`, and token management methods.
`CreateRebaseClientOptions`	Extends `RebaseClientConfig` with `auth`, `admin`, and `cron` sub-configs.

Config

Option	Type	Default	Description
`baseUrl`	`string`	`""`	Backend URL (e.g. `http://localhost:3001`)
`token`	`string`	—	Static auth token
`apiPath`	`string`	`"/api"`	API path prefix
`fetch`	`typeof fetch`	`globalThis.fetch`	Custom fetch implementation
`onUnauthorized`	`() => Promise<boolean>`	auto-refresh	Handler for 401 responses
`websocketUrl`	`string`	derived from `baseUrl`	WebSocket URL for realtime
`realtime`	`boolean`	`true`	Open the WebSocket — `false` lets a one-shot script exit
`collections`	`Record<string, string>`	—	Maps accessor names to collection slugs
`offline`	`boolean \| OfflineConfig`	`false`	Local-first sync — see the docs

Collection Client

client.data.collection("slug") or client.data.myCollection returns a CollectionClient<M>:

Method	Description
`find(params?)`	Query with pagination. Returns `FindResponse<M>` (`{ data, meta }`)
`findById(id)`	Fetch a single snapshot. Returns `Snapshot<M> \| undefined`
`create(data, id?)`	Create snapshot. Returns `Snapshot<M>`
`update(id, data)`	Update snapshot. Returns `Snapshot<M>`
`delete(id)`	Delete snapshot
`count(params?)`	Count matching snapshots
`where(col, op, val)`	Start a fluent query — returns `QueryBuilder`
`orderBy(col, dir?)`	Order results — returns `QueryBuilder`
`limit(n)` / `offset(n)`	Pagination — returns `QueryBuilder`
`search(str)`	Full-text search — returns `QueryBuilder`
`include(...rels)`	Include related snapshots — returns `QueryBuilder`
`listen(params, onUpdate, onError?)`	Realtime subscription (requires WebSocket)
`listenById(id, onUpdate, onError?)`	Realtime single-snapshot subscription
`observe(params, onResult, onError?, options?)`	Live query — local-first when `offline` is on, otherwise fetch + `listen`
`observeById(id, onResult, onError?, options?)`	Live query for a single row

Auth Module (`client.auth`)

Method	Description
`signInWithEmail(email, password)`	Email/password login
`signUp(email, password, displayName?)`	Register new user
`signInWithGoogle(payload)`	Google OAuth (ID token, access token, or auth code)
`signInWithOAuth(providerId, payload)`	Generic OAuth for any provider
`signInWithGitHub/Microsoft/Apple/Facebook/Twitter/Discord/GitLab/Bitbucket/Slack/Spotify`	Provider-specific convenience methods
`signOut()`	Sign out and invalidate refresh token
`refreshSession()`	Refresh the access token
`getUser()` / `updateUser(updates)`	Current user profile
`resetPasswordForEmail(email)`	Request password reset
`resetPassword(token, password)`	Complete password reset
`changePassword(old, new)`	Change password (authenticated)
`sendVerificationEmail()` / `verifyEmail(token)`	Email verification
`getSessions()` / `revokeSession(id)` / `revokeAllSessions()`	Session management
`getAuthConfig()`	Fetch backend auth configuration
`getSession()`	Get current session (sync)
`onAuthStateChange(callback)`	Subscribe to auth events (`SIGNED_IN`, `SIGNED_OUT`, `TOKEN_REFRESHED`, `USER_UPDATED`)

Storage Module (`client.storage`)

Method	Description
`putObject({ file, key, metadata, bucket })`	Upload a file
`getSignedUrl(key, bucket?)`	Get download URL + metadata
`getObject(key, bucket?)`	Download file as `File` object
`deleteObject(key, bucket?)`	Delete a file
`listObjects(prefix, options?)`	List files with optional pagination

Admin Module (`client.admin`)

Method	Description
`listUsers()` / `listUsersPaginated(options?)`	List all users
`getUser(userId)`	Get a single user
`createUser(data)`	Create a user
`updateUser(userId, data)`	Update a user
`deleteUser(userId)`	Delete a user
`bootstrap()`	First-user bootstrap

Functions Module (`client.functions`)

Method	Description
`invoke<T>(name, payload?, options?)`	Call a custom backend function at `/api/functions/{name}`

Other Exports

Export	Description
`RebaseApiError`	Error class with `status`, `message`, `code`, `details`
`RebaseWebSocketClient`	WebSocket client for realtime subscriptions
`isOfflineError(error)`	True when a read failed with no network and nothing cached
`MemoryOfflineStore`	Reference `OfflineStore`; the IndexedDB one is wired automatically
`createCookieStorage(options?)`	Cookie-based auth storage adapter
`createMemoryStorage()`	In-memory auth storage adapter
`QueryBuilder`	Fluent query builder (also re-exported from `@rebasepro/common`)
`Snapshot`, `FindResponse`	Re-exported from `@rebasepro/types`

Quick Start

import { createRebaseClient } from "@rebasepro/client";

const client = createRebaseClient({
    baseUrl: "http://localhost:3001",
});

// Auth
await client.auth.signInWithEmail("user@example.com", "password");

// CRUD
const { data: products } = await client.data.products.find({ limit: 10 });
const product = await client.data.products.create({ name: "Camera", price: 299 });
await client.data.products.update(product.id, { price: 249 });
await client.data.products.delete(product.id);

// Fluent queries
const { data: expensive } = await client.data.products
    .where("price", ">=", 100)
    .orderBy("price", "desc")
    .limit(5)
    .find();

// Custom function
const result = await client.functions.invoke("process-order", { orderId: "123" });

// Realtime
const unsubscribe = client.data.products.listen(
    { limit: 50 },
    (response) => console.log("Update:", response.data)
);

@rebasepro/common — QueryBuilder, buildRebaseData, shared utilities
@rebasepro/types — Snapshot, FindResponse, CollectionAccessor, etc.
@rebasepro/utils — toSnakeCase and other helpers
@rebasepro/app — React hook adapter that wraps client.auth for CMS integration