Providers - Shipr

Shipr’s provider stack wraps the entire application to provide theming, analytics, authentication, database access, and UI utilities. The order of providers is critical for proper functionality.

Provider Stack Overview

All providers are configured in src/app/layout.tsx:106-149:

<html lang="en" suppressHydrationWarning>
  <head>
    <OrganizationJsonLd />
    <WebSiteJsonLd />
  </head>
  <body>
    <ThemeProvider
      attribute="class"
      defaultTheme="system"
      enableSystem
      disableTransitionOnChange
    >
      <PostHogProvider>
        <ClerkProviderWrapper>
          <PostHogIdentify />
          <Suspense fallback={null}>
            <PostHogPageview />
          </Suspense>
          <TooltipProvider>
            <ConvexClientProvider>
              {children}
            </ConvexClientProvider>
          </TooltipProvider>
        </ClerkProviderWrapper>
      </PostHogProvider>
      <Toaster />
    </ThemeProvider>
    <Analytics />
    <SpeedInsights />
  </body>
</html>

Provider Hierarchy

ThemeProvider (next-themes)
  └─ PostHogProvider (PostHog analytics)
      └─ ClerkProviderWrapper (Clerk auth)
          ├─ PostHogIdentify (links Clerk user to PostHog)
          ├─ PostHogPageview (tracks route changes)
          └─ TooltipProvider (shadcn/ui)
              └─ ConvexClientProvider (Convex + Clerk integration)
                  └─ {children} (Your app content)

ThemeProvider

Package: next-themes
Location: src/components/theme-provider.tsx
Purpose: Light/dark/system theme management

Configuration

import { ThemeProvider as NextThemesProvider } from "next-themes";
import { type ThemeProviderProps } from "next-themes/dist/types";

export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
}

Props in layout.tsx:

<ThemeProvider
  attribute="class"              // Use class="dark" for dark mode
  defaultTheme="system"          // Default to system preference
  enableSystem                   // Allow system theme detection
  disableTransitionOnChange      // Prevent FOUC on theme switch
>

Usage in Components

import { useTheme } from "next-themes";

export function ThemeToggle() {
  const { theme, setTheme } = useTheme();
  
  return (
    <button onClick={() => setTheme(theme === "dark" ? "light" : "dark")}>
      Toggle theme
    </button>
  );
}

Why it’s first: All child components need access to theme state, including other providers.

PostHogProvider

Package: posthog-js, posthog-js/react
Location: src/components/posthog-provider.tsx
Purpose: Product analytics and feature flags

Configuration

"use client";

import posthog from "posthog-js";
import { PostHogProvider as PHProvider } from "posthog-js/react";

if (typeof window !== "undefined") {
  posthog.init(process.env.NEXT_PUBLIC_POSTHOG_KEY!, {
    api_host: process.env.NEXT_PUBLIC_POSTHOG_HOST,
    person_profiles: "identified_only",
    capture_pageviews: false,  // We use PostHogPageview component
    capture_pageleave: true,
  });
}

export function PostHogProvider({ children }: { children: React.ReactNode }) {
  return <PHProvider client={posthog}>{children}</PHProvider>;
}

PostHogIdentify Component

Location: src/components/posthog-identify.tsx
Purpose: Link Clerk user identity to PostHog

"use client";

import { useUser } from "@clerk/nextjs";
import { usePostHog } from "posthog-js/react";
import { useEffect } from "react";

export function PostHogIdentify() {
  const { user, isLoaded } = useUser();
  const posthog = usePostHog();
  
  useEffect(() => {
    if (isLoaded && user) {
      posthog.identify(user.id, {
        email: user.primaryEmailAddress?.emailAddress,
        name: user.fullName,
      });
    } else if (isLoaded && !user) {
      posthog.reset();  // Clear identity on sign out
    }
  }, [user, isLoaded, posthog]);
  
  return null;
}

PostHogPageview Component

Location: src/components/posthog-pageview.tsx
Purpose: Track route changes in App Router

"use client";

import { usePathname, useSearchParams } from "next/navigation";
import { usePostHog } from "posthog-js/react";
import { useEffect } from "react";

export function PostHogPageview() {
  const pathname = usePathname();
  const searchParams = useSearchParams();
  const posthog = usePostHog();
  
  useEffect(() => {
    if (pathname) {
      let url = window.origin + pathname;
      if (searchParams.toString()) {
        url = url + `?${searchParams.toString()}`;
      }
      posthog.capture("$pageview", { $current_url: url });
    }
  }, [pathname, searchParams, posthog]);
  
  return null;
}

Note: Wrapped in <Suspense> to prevent blocking during static generation. Why PostHog is second: It needs to initialize before Clerk so analytics are ready when user authentication happens.

ClerkProviderWrapper

Package: @clerk/nextjs
Location: src/components/clerk-provider-wrapper.tsx
Purpose: User authentication and session management

Configuration

"use client";

import { ClerkProvider } from "@clerk/nextjs";
import { dark } from "@clerk/themes";
import { useTheme } from "next-themes";

export function ClerkProviderWrapper({ children }: { children: React.ReactNode }) {
  const { resolvedTheme } = useTheme();
  
  return (
    <ClerkProvider
      appearance={{
        baseTheme: resolvedTheme === "dark" ? dark : undefined,
      }}
    >
      {children}
    </ClerkProvider>
  );
}

Key features:

Theme adaptation: Clerk UI matches app theme (light/dark)
Auto-sync: Uses useTheme() from ThemeProvider
Session management: Provides useAuth(), useUser(), useSession() hooks

Environment Variables

NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_...
CLERK_SECRET_KEY=sk_test_...
CLERK_JWT_ISSUER_DOMAIN=clerk.your-domain.com

# Optional: Customize Clerk URLs
NEXT_PUBLIC_CLERK_SIGN_IN_URL=/sign-in
NEXT_PUBLIC_CLERK_SIGN_UP_URL=/sign-up
NEXT_PUBLIC_CLERK_AFTER_SIGN_IN_URL=/dashboard
NEXT_PUBLIC_CLERK_AFTER_SIGN_UP_URL=/onboarding

Usage in Components

import { useAuth, useUser } from "@clerk/nextjs";

export function UserProfile() {
  const { isLoaded, userId } = useAuth();
  const { user } = useUser();
  
  if (!isLoaded) return <LoadingSpinner />;
  if (!userId) return <SignInButton />;
  
  return <div>Welcome, {user?.fullName}!</div>;
}

Why Clerk is third: It depends on ThemeProvider for theme state.

ConvexClientProvider

Package: convex/react, convex/react-clerk
Location: src/lib/convex-client-provider.tsx
Purpose: Realtime database with Clerk authentication

Configuration

"use client";

import { ReactNode } from "react";
import { ConvexReactClient } from "convex/react";
import { ConvexProviderWithClerk } from "convex/react-clerk";
import { useAuth } from "@clerk/nextjs";

if (!process.env.NEXT_PUBLIC_CONVEX_URL) {
  throw new Error("Missing NEXT_PUBLIC_CONVEX_URL in your .env file");
}

const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL);

export function ConvexClientProvider({ children }: { children: ReactNode }) {
  return (
    <ConvexProviderWithClerk client={convex} useAuth={useAuth}>
      {children}
    </ConvexProviderWithClerk>
  );
}

Clerk + Convex Integration

Convex uses Clerk’s JWT tokens for authentication. The integration requires: 1. Convex auth config (convex/auth.config.ts:1-15):

import { AuthConfig } from "convex/server";

export default {
  providers: [
    {
      domain: process.env.CLERK_JWT_ISSUER_DOMAIN,
      applicationID: "convex",
    },
  ],
} satisfies AuthConfig;

2. ConvexProviderWithClerk uses useAuth hook to:

Get JWT token from Clerk session
Send token with every Convex query/mutation
Enable ctx.auth.getUserIdentity() in Convex functions

Usage in Components

import { useQuery, useMutation } from "convex/react";
import { api } from "@convex/_generated/api";

export function Dashboard() {
  const user = useQuery(api.users.getCurrentUser);
  const updateUser = useMutation(api.users.createOrUpdateUser);
  
  if (!user) return <LoadingSpinner />;
  
  return (
    <div>
      <h1>Welcome, {user.name}!</h1>
      <button onClick={() => updateUser({ name: "New Name" })}>
        Update Name
      </button>
    </div>
  );
}

Why Convex is last: It depends on Clerk’s useAuth() hook for authentication.

TooltipProvider

Package: @radix-ui/react-tooltip (via shadcn/ui)
Location: src/components/ui/tooltip.tsx
Purpose: Shared tooltip context for UI components

Configuration

import { TooltipProvider } from "@/components/ui/tooltip";

<TooltipProvider>
  {children}
</TooltipProvider>

Default delay: 200ms (configurable via delayDuration prop)

Usage in Components

import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
} from "@/components/ui/tooltip";

export function HelpButton() {
  return (
    <Tooltip>
      <TooltipTrigger asChild>
        <button>Help</button>
      </TooltipTrigger>
      <TooltipContent>
        <p>Click for help</p>
      </TooltipContent>
    </Tooltip>
  );
}

Additional Components

Toaster

Package: sonner
Location: src/components/ui/sonner.tsx
Purpose: Toast notifications

import { Toaster } from "@/components/ui/sonner";

<ThemeProvider>
  {children}
  <Toaster />  {/* Rendered outside main provider tree */}
</ThemeProvider>

Usage:

import { toast } from "sonner";

export function SaveButton() {
  const handleSave = async () => {
    try {
      await saveData();
      toast.success("Saved successfully!");
    } catch (error) {
      toast.error("Failed to save");
    }
  };
  
  return <button onClick={handleSave}>Save</button>;
}

Analytics & SpeedInsights

Packages: @vercel/analytics, @vercel/speed-insights
Location: src/app/layout.tsx:145-146
Purpose: Vercel web analytics and performance monitoring

import { Analytics } from "@vercel/analytics/react";
import { SpeedInsights } from "@vercel/speed-insights/next";

<body>
  {/* ... providers ... */}
  <Analytics />
  <SpeedInsights />
</body>

Automatic tracking:

Page views
Web vitals (LCP, FID, CLS, TTFB, FCP)
No configuration required on Vercel

Provider Dependency Graph

Key dependencies:

ClerkProviderWrapper depends on ThemeProvider for theme state
PostHogIdentify depends on ClerkProviderWrapper for user data
ConvexClientProvider depends on ClerkProviderWrapper for useAuth() hook

Environment Variables

All required environment variables for providers:

# Clerk (required)
NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_...
CLERK_SECRET_KEY=sk_test_...
CLERK_JWT_ISSUER_DOMAIN=clerk.your-domain.com

# Convex (required)
NEXT_PUBLIC_CONVEX_URL=https://your-deployment.convex.cloud

# PostHog (optional)
NEXT_PUBLIC_POSTHOG_KEY=phc_...
NEXT_PUBLIC_POSTHOG_HOST=https://app.posthog.com

Common Patterns

Accessing User Data

import { useUser } from "@clerk/nextjs";        // Clerk user
import { useQuery } from "convex/react";
import { api } from "@convex/_generated/api";

export function UserDisplay() {
  const { user: clerkUser } = useUser();                    // Clerk session
  const convexUser = useQuery(api.users.getCurrentUser);    // Convex DB record
  
  return (
    <div>
      <p>Email: {clerkUser?.primaryEmailAddress?.emailAddress}</p>
      <p>Plan: {convexUser?.plan}</p>
    </div>
  );
}

Theme-aware Styling

import { useTheme } from "next-themes";

export function ThemedComponent() {
  const { resolvedTheme } = useTheme();
  
  return (
    <div className={resolvedTheme === "dark" ? "bg-black" : "bg-white"}>
      Content
    </div>
  );
}

Analytics Tracking

import { usePostHog } from "posthog-js/react";

export function UpgradeButton() {
  const posthog = usePostHog();
  
  const handleUpgrade = () => {
    posthog.capture("upgrade_clicked", {
      plan: "pro",
      source: "dashboard",
    });
    // ... upgrade logic
  };
  
  return <button onClick={handleUpgrade}>Upgrade</button>;
}

Troubleshooting

Hydration Errors

Problem: Theme flicker or hydration mismatch
Solution: Add suppressHydrationWarning to <html> tag

<html lang="en" suppressHydrationWarning>

Clerk Theme Not Updating

Problem: Clerk UI doesn’t match app theme
Solution: Ensure ClerkProviderWrapper uses resolvedTheme not theme

const { resolvedTheme } = useTheme();  // ✅ Use resolvedTheme
const { theme } = useTheme();          // ❌ May be "system"

PostHog Not Tracking

Problem: Events not appearing in PostHog
Solution: Check environment variables and init config

// Verify in browser console:
console.log(posthog.get_config());

Convex Auth Errors

Problem: Unauthenticated errors in Convex queries
Solution: Verify CLERK_JWT_ISSUER_DOMAIN matches Clerk dashboard

# Get from Clerk Dashboard > API Keys > Advanced > JWT Template
CLERK_JWT_ISSUER_DOMAIN=clerk.your-domain.com

Next Steps

Architecture

Learn about the overall tech stack and data flow

Authentication

Deep dive into Clerk authentication setup

Convex Guide

Learn how to write queries and mutations

Theming

Customize colors and styles

Architecture

Customization

​Provider Stack Overview

​Provider Hierarchy

​ThemeProvider

​Configuration

​Usage in Components

​PostHogProvider

​Configuration

​PostHogIdentify Component

​PostHogPageview Component

​ClerkProviderWrapper

​Configuration

​Environment Variables

​Usage in Components

​ConvexClientProvider

​Configuration

​Clerk + Convex Integration

​Usage in Components

​TooltipProvider

​Configuration

​Usage in Components

​Additional Components

​Toaster

​Analytics & SpeedInsights

​Provider Dependency Graph

​Environment Variables

​Common Patterns

​Accessing User Data

​Theme-aware Styling

​Analytics Tracking

​Troubleshooting

​Hydration Errors

​Clerk Theme Not Updating

​PostHog Not Tracking

​Convex Auth Errors

​Next Steps

Architecture

Authentication

Convex Guide

Theming

Build docs developers (and LLMs) love

Provider Stack Overview

Provider Hierarchy

ThemeProvider

Configuration

Usage in Components

PostHogProvider

Configuration

PostHogIdentify Component

PostHogPageview Component

ClerkProviderWrapper

Configuration

Environment Variables

Usage in Components

ConvexClientProvider

Configuration

Clerk + Convex Integration

Usage in Components

TooltipProvider

Configuration

Usage in Components

Additional Components

Toaster

Analytics & SpeedInsights

Provider Dependency Graph

Environment Variables

Common Patterns

Accessing User Data

Theme-aware Styling

Analytics Tracking

Troubleshooting

Hydration Errors

Clerk Theme Not Updating

PostHog Not Tracking

Convex Auth Errors

Next Steps