A reusable Cloudflare Durable Object class — SpaceDO — that provides an isolated workspace and files with preview and deploy support on the Workers runtime. It is the file/preview/deploy backend used by VibeSDK's ThinkAgent; the agentic loop itself is powered by @cloudflare/think.

npm install @space-do/space

Peer expectations: compatibility_date >= 2024-09-23 and compatibility_flags = ["nodejs_compat"]. The class uses SQLite-backed Durable Object storage and a LOADER Worker Loader binding for Dynamic Worker previews. Set ENABLE_ARTIFACTS="true" with an ARTIFACTS binding to use Cloudflare Artifacts for git/version history; otherwise SpaceDO uses its SQLite-backed workspace filesystem.

Re-export SpaceDO from your worker entrypoint and declare it in wrangler.toml:

// src/worker.ts
import type { Env } from "@space-do/space"
export { SpaceDO } from "@space-do/space"

[[durable_objects.bindings]]
name = "SPACE_DO"
class_name = "SpaceDO"

[[artifacts]]
binding = "ARTIFACTS"
namespace = "your-artifacts-namespace"

[[worker_loaders]]
binding = "LOADER"

[[migrations]]
tag = "v1"
new_sqlite_classes = ["SpaceDO"]

Each named SpaceDO instance is an isolated workspace and file layer. Its filesystem backend is selected when the instance is first initialized and remains pinned for that app: ENABLE_ARTIFACTS="true" selects Artifacts for git/version history, while the default uses the SQLite workspace filesystem. Changing the flag affects only newly-created spaces. Address SpaceDO by forwarding a Request to a stub from env.SPACE_DO.get(...), or call its typed RPC methods directly via DO RPC.

The generated app exports class App extends DurableObject. SpaceDO hosts it as a Facet with isolated SQLite storage and exposes inspection through the listAppTables, queryAppTable, and wipeAppDatabase RPC methods. The result types are exported for typed consumers:

import type {
  AppDatabaseTable,
  AppDatabaseColumn,
  AppDatabaseReadResult,
} from "@space-do/space"

npm run build       # esbuild → dist/index.js
npm run typecheck