$79

Mayoyo Starter

11 ratings
I want this!

Mayoyo Starter

$79
11 ratings

πŸ”₯ The SaaS Starter That Actually Ships

"Stop debugging bleeding-edge tech conflicts. Start building features that matter."


View Demo

πŸ’€ The Bleeding Edge Nightmare

You know this pain:

  • ❌ Tailwind v4 breaks your entire design system overnight
  • ❌ React 19 concurrent features break your forms
  • ❌ Next.js 15 App Router + Turbopack throws cryptic errors
  • ❌ Stripe webhooks fail silently in production
  • ❌ Supabase SSR hydration mismatches crash your app
  • ❌ PostHog + React 19 = duplicate event tracking hell

The brutal reality? Even senior devs spend 3+ months just getting the latest tech stack to play nice together.


⚑️ Latest Tech Stack (Actually Working)

Cutting-Edge Frontend

What's Actually Included

  • Next.js 15 with Turbopack (dev server in <200ms)
  • React 19 with proper concurrent features
  • Tailwind v4 (no more config headaches)
  • TypeScript 5 with strict mode
  • Supabase SSR (no hydration errors)
  • Stripe 18.2 with latest webhook handling
  • PostHog analytics (React 19 compatible)
  • Vitest testing suite (launching soon)

SSR-First Architecture

βœ… Server Components by default
βœ… Client components only when needed ('use client')
βœ… Zero hydration mismatches
βœ… Perfect Lighthouse scores
βœ… No "useState during SSR" errors

πŸ›‘οΈ The Integration Hell We Solved

Latest Tech Nightmare Our Battle-Tested Solution Tailwind v4 breaking everything Pre-configured with @tailwindcss/postcss v4 setup React 19 form actions not working Proper useTransition + useActionState implementation Next.js 15 middleware auth errors SSR-compatible auth with @supabase/ssr Stripe webhooks + App Router issues Event handlers in /api/webhooks with proper error boundaries PostHog React 19 conflicts Custom provider with concurrent-safe event tracking Zustand + SSR hydration bugs Store persistence with SSR-safe serialization


πŸ”¬ Technical Deep Dive

Why This Stack Actually Works

1. Tailwind v4 Properly Configured

// package.json - The exact versions that work
"@tailwindcss/postcss": "^4",
"tailwindcss": "^4",
"@tailwindcss/typography": "^0.5.16"

2. React 19 + Next.js 15 Harmony

// Server Actions that actually work
export async function createSubscription(formData: FormData) {
  'use server'
  // Proper concurrent features implementation
  const result = await stripe.subscriptions.create({...})
  revalidatePath('/billing')
}

3. SSR-First Supabase Auth

// No more "useUser is not defined" errors
export async function createClient(useServiceRole = false) {
  const cookieStore = await cookies()

  if (useServiceRole) {
    // Service role client bypasses RLS - use for webhook operations
    return createServerClient(
      process.env.NEXT_PUBLIC_SUPABASE_URL!,
      process.env.SUPABASE_SERVICE_ROLE_KEY!, // This bypasses RLS
      {
        cookies: {
          getAll() {
            return cookieStore.getAll()
          },
          setAll(cookiesToSet) {
            try { ...

4. Zero-Config PostHog + React 19

// providers/posthog.tsx - Concurrent-safe analytics
export function PostHogProvider({ children }: PropsWithChildren) {
  // Proper provider setup with React 19 compatibility
}

πŸ“¦ Complete Production File Structure

Every page and API route you need(all with a simple out of the box setup):


β”œβ”€β”€ app/                          ← Next.js 15 App Router directory
β”‚   β”œβ”€β”€ account/                  ← User account management section
β”‚   β”‚   β”œβ”€β”€ billing/              ← Account billing management
β”‚   β”œβ”€β”€ api/                      ← API routes (server-side endpoints)
β”‚   β”‚   β”œβ”€β”€ contact/              ← Contact form handler
β”‚   β”‚   β”œβ”€β”€ stripe/               ← Stripe API endpoints
β”‚   β”‚   β”œβ”€β”€ webhooks/             ← Webhook handlers (Stripe, etc.)
β”‚   β”œβ”€β”€ auth/                     ← Authentication flow pages
β”‚   β”‚   β”œβ”€β”€ confirm/              ← Email confirmation
β”‚   β”‚   β”œβ”€β”€ error/                ← Auth error handling
β”‚   β”‚   β”œβ”€β”€ forgot-password/      ← Password reset flow
β”‚   β”‚   β”œβ”€β”€ login/                ← Login page
β”‚   β”‚   β”œβ”€β”€ sign-up/              ← Registration
β”‚   β”‚   β”œβ”€β”€ sign-up-success/      ← Post-registration
β”‚   β”‚   β”œβ”€β”€ update-password/      ← Password update
β”‚   β”œβ”€β”€ billing/                  ← Billing & subscription management
β”‚   β”‚   β”œβ”€β”€ invoices/             ← Invoice history
β”‚   β”‚   β”œβ”€β”€ payment-methods/      ← Card management
β”‚   β”‚   β”œβ”€β”€ portal/               ← Stripe customer portal
β”‚   β”œβ”€β”€ blog/                     ← Blog section
β”‚   β”‚   β”œβ”€β”€ [slug]/               ← Dynamic blog posts (CMS)
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Blog listing page
β”‚   β”œβ”€β”€ dashboard/                ← User dashboard
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Dashboard main page
β”‚   β”œβ”€β”€ pricing/                  ← Pricing page
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Pricing plans display
β”‚   β”œβ”€β”€ protected/                ← Protected routes example
β”‚   β”‚   β”œβ”€β”€ layout.tsx            ← Protected section layout
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Protected page content
β”‚   β”œβ”€β”€ studio/                   ← Sanity CMS admin interface
β”‚   β”‚   β”œβ”€β”€ [[...tool]]/          ← Catch-all route for Sanity Studio
β”‚   β”œβ”€β”€ success/                  ← Payment success page
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Success confirmation UI
β”‚   β”œβ”€β”€ support/                  ← Support/help page
β”‚   β”‚   β”œβ”€β”€ page.tsx              ← Support content & contact
β”‚   β”œβ”€β”€ error.tsx                 ← Global error boundary
β”‚   β”œβ”€β”€ favicon.ico               ← Site favicon
β”‚   β”œβ”€β”€ global-error.tsx          ← Root error boundary
β”‚   β”œβ”€β”€ globals.css               ← Global CSS styles
β”‚   β”œβ”€β”€ layout.tsx                ← Root layout component
β”‚   β”œβ”€β”€ loading.tsx               ← Global loading UI
β”‚   β”œβ”€β”€ not-found.tsx             ← 404 page
β”‚   β”œβ”€β”€ page.tsx                  ← Homepage component
β”‚   β”œβ”€β”€ template.tsx              ← Page template wrapper
β”œβ”€β”€ components/                   ← Reusable React components
β”œβ”€β”€ lib/                          ← Utility functions & configurations
β”œβ”€β”€ providers/                    ← React context providers
β”œβ”€β”€ public/                       ← Static assets (images, icons, etc.)
β”œβ”€β”€ sanity/                       ← Sanity CMS schemas & config
β”œβ”€β”€ store/                        ← Zustand state management
β”œβ”€β”€ types/                        ← TypeScript type definitions
β”œβ”€β”€ .env.local                    ← Environment variables (local)
β”œβ”€β”€ .gitignore                    ← Git ignore patterns
β”œβ”€β”€ .prettierignore               ← Prettier ignore patterns
β”œβ”€β”€ components.json               ← Shadcn/ui components config
β”œβ”€β”€ eslint.config.mjs             ← ESLint configuration
β”œβ”€β”€ instrumentation-client.ts     ← Client-side monitoring setup
β”œβ”€β”€ middleware.ts                 ← Next.js middleware (auth & routing)
β”œβ”€β”€ next-env.d.ts                 ← Next.js TypeScript declarations
β”œβ”€β”€ next-sitemap.config.js        ← Auto sitemap generation config
β”œβ”€β”€ next.config.ts                ← Next.js configuration
β”œβ”€β”€ package-lock.json             ← NPM dependency lock file
β”œβ”€β”€ package.json                  ← Project dependencies & scripts
β”œβ”€β”€ postcss.config.mjs            ← PostCSS configuration
β”œβ”€β”€ README.md                     ← Project documentation
β”œβ”€β”€ sanity.cli.ts                 ← Sanity CLI configuration
β”œβ”€β”€ sanity.config.ts              ← Sanity CMS configuration
β”œβ”€β”€ structure.txt                 ← Project structure documentation
β”œβ”€β”€ tsconfig.json                 ← TypeScript configuration

That's 25+ pre-built pages and API routes - everything from auth flows to billing management to CMS integration.


⚠️ The Version Compatibility Matrix

The versions that actually work together:

{
  "next": "15.3.3",           // ← Latest stable
  "react": "^19.0.0",         // ← Release candidate
  "tailwindcss": "^4",        // ← Beta (but stable)
  "@supabase/ssr": "^0.6.1",  // ← SSR-compatible
  "stripe": "^18.2.1",        // ← Latest webhook API
  "posthog-js": "^1.249.5"    // ← React 19 compatible
}

We spent 1000+ hours finding the exact combination that doesn't break.


🎯 Perfect for Developers Who

Want bleeding-edge tech without the bleeding
Need to ship fast with the latest features
Can't afford 3 months debugging version conflicts
Demand SSR-first performance

"I tried upgrading to Next.js 15 + React 19 myself. Unsuccessfully, spent 3 weeks just getting it working. This starter saved me from going insane."
β€” Alex Rodriguez, Full-Stack Dev


πŸš€ What You Actually Get

Battle-Tested Integrations

  • βœ… Stripe subscriptions with proper webhook handling
  • βœ… Supabase auth with SSR (no hydration errors)
  • βœ… Sanity CMS (with optional live preview)
  • βœ… PostHog analytics (React 19 compatible)
  • βœ… Resend emails with React Email templates
  • βœ… Tailwind v4 with zero config needed

Pages That Work Out-of-the-Box

Complete Authentication System:

  • /auth/login β†’ Magic links + OAuth providers
  • /auth/sign-up β†’ User registration with email verification
  • /auth/confirm β†’ Email confirmation handling
  • /auth/forgot-password β†’ Password reset flow
  • /auth/update-password β†’ Secure password updates
  • /auth/error β†’ Auth error handling with fallbacks

Full Billing Infrastructure:

  • /billing/portal β†’ Stripe Customer Portal integration
  • /billing/invoices β†’ Invoice history and downloads
  • /billing/payment-methods β†’ Credit card management
  • /account/billing β†’ Account-level billing settings
  • /success β†’ Post-payment confirmation page
  • /pricing β†’ Dynamic pricing from Stripe

Content Management:

  • /blog/[slug] β†’ CMS-powered blog posts with SEO
  • /studio/[[...tool]] β†’ Full Sanity CMS admin interface
  • /dashboard β†’ User analytics and account management
  • /support β†’ Help and support pages
  • /protected β†’ Example protected route with middleware

API Infrastructure:

  • /api/webhooks/* β†’ Stripe webhook handlers (tested)
  • /api/stripe/* β†’ Payment processing endpoints
  • /api/contact β†’ Contact form submission handler

Performance Optimizations

  • βœ… Turbopack dev server (<200ms startup)
  • βœ… Server Components by default
  • βœ… Optimal bundle sizes
  • βœ… Perfect Lighthouse scores
  • βœ… Zero client-side JavaScript waste

πŸ’° The Real Cost

DIY "Latest Tech" Approach:

  • 80+ hours debugging Next.js 15 + React 19: $8,000
  • 40+ hours getting Tailwind v4 working: $4,000
  • 60+ hours fixing SSR hydration issues: $6,000
  • 30+ hours Stripe + Supabase integration: $3,000
  • Total: $21,000+ in dev time

This Starter: $199 ($299 for setup assistance)

Plus your sanity intact.


πŸ”’ What You're Really Buying

The latest tech stack that actually works together:

  • βœ… Next.js 15 + React 19 (no conflicts)
  • βœ… Tailwind v4 (properly configured)
  • βœ… Supabase SSR (zero hydration errors)
  • βœ… Stripe webhooks (tested with real events)
  • βœ… PostHog analytics (React 19 compatible)
  • βœ… TypeScript 5 (strict mode working)
  • βœ… Vitest testing suite (coming soon)

This is bleeding-edge tech that doesn't make you bleed.


πŸš€ Get Started in Minutes

1. git clone [repo-url]
2. cp .env.example .env.local  # Add your API keys
3. npm install
4. npm run dev --turbopack     # <200ms startup
5. Visit /studio to set up CMS
6. Deploy to Vercel (one click)

No version conflicts. No integration hell. No weekend debugging.


Ready to build with the latest tech that actually works?

$199 - Get Instant Access β†’

30-day money-back guarantee. If you spend more than 4 hours debugging version conflicts, we'll refund you.


⚠️ Warning: If you enjoy spending nights debugging React 19 hydration errors, this probably isn't for you.

I want this!

Skip 3 months of setup hell - Production-ready Next.js 15 SaaS starter with Supabase auth, Stripe payments, Sanity CMS, PostHog analytics, and everything configured so you can launch in days, not months.

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