Tako SDK (tako.sh)

Runtime SDK for JavaScript/TypeScript apps deployed with Tako.

CRITICAL: The tako.sh package is required — it provides the entrypoint binaries that tako-server launches to run your app. Tako v0 uses plain ES modules everywhere — no Tako global. Runtime state (env, secrets, logger, build info) is accessed through the tako object from tako.sh; channels and workflows are imported from their own files.

CRITICAL: Framework helpers are opt-in. Use tako.sh/vite for Vite-based SSR frameworks (TanStack Start, Nuxt, SolidStart) and tako.sh/nextjs for Next.js standalone builds. Plain fetch-handler apps do not need either helper.

Core Concept: The Fetch Handler

Tako apps export a standard fetch handler as the default export:

// src/index.ts — this is a complete Tako app, no SDK import needed
export default function fetch(request: Request, env: Record<string, string>) {
  return new Response("Hello World!");
}