Developer Guide

Pick the SDK that matches your runtime and framework. Each guide includes installation, quick start, and integration patterns.

Supported SDKs

Runtime	SDK	Use case
Browser	JavaScript	Vanilla JS, SPA, or any client-side app
Server	Node.js	Express, Fastify, API routes, SSR
React	React	React apps with hooks and type safety
Next.js	Next.js	App Router, Pages Router, middleware
Gatsby	Gatsby	Gatsby sites with SSR and client hydration
Vue	Vue	Vue 3 apps with Composition API
Nuxt	Nuxt	Nuxt 3 with server plugins and API routes

Pick your framework

React, Next.js, or Gatsby? Use the React SDK or Next.js guide.
Vue or Nuxt? Use the Vue SDK or Nuxt guide.
Plain JavaScript in the browser? Use the JavaScript SDK.
Node.js backend, API, or SSR? Use the Node.js guide.

Quick example

With the React SDK and a feature called new-dashboard:


import { useFeature } from '@supashiphq/react-sdk'
 
function Dashboard() {
  const { feature: isEnabled, isLoading } = useFeature('new-dashboard')
 
  if (isLoading) return <Skeleton />
  return isEnabled ? <NewDashboard /> : <OldDashboard />
}

Unsupported runtimes

Need to evaluate flags from a runtime not listed above? Contact support@supaship.com for guidance.