capacitor-vite-nextjs-backend

Setup and patterns for a Vite + React frontend with Capacitor and Ionic React, plus a separate Next.js backend in a monorepo. Use when creating or modifying a Capacitor mobile app with a Vite frontend and Next.js API, or when adding Capacitor to an existing Vite app with a Next.js backend.

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name	capacitor-vite-nextjs-backend
description	Setup and patterns for a Vite + React frontend with Capacitor and Ionic React, plus a separate Next.js backend in a monorepo. Use when creating or modifying a Capacitor mobile app with a Vite frontend and Next.js API, or when adding Capacitor to an existing Vite app with a Next.js backend.

Capacitor + Vite Frontend + Next.js Backend

Purpose

This skill provides a comprehensive guide for setting up a Vite + React frontend with Capacitor for native mobile support and Ionic React for UI components, paired with a separate Next.js backend API. This architecture separates concerns: the frontend is a pure SPA built with Vite, and the backend is a Next.js API server.

When to Use

Use this skill when:

Setting up a new Capacitor mobile app with Vite + React frontend and Next.js backend
Adding Capacitor to an existing Vite + React app that calls a Next.js API
Configuring API base URLs for Capacitor apps (critical: native apps can't use localhost)
Understanding the monorepo structure for frontend/backend separation
Troubleshooting Capacitor build or sync issues with Vite

Architecture Overview

Monorepo Structure

your-project/
├── frontend/              # Vite + React + Capacitor + Ionic
│   ├── src/
│   │   ├── main.tsx       # Entry point with Ionic setup
│   │   ├── App.tsx        # Root component with routing
│   │   ├── lib/
│   │   │   └── apiConfig.ts  # API base URL configuration
│   │   └── ...
│   ├── capacitor.config.ts
│   ├── vite.config.mts
│   ├── package.json
│   └── index.html
├── backend/               # Next.js API
│   ├── src/
│   │   └── app/
│   │       └── api/       # API routes
│   └── package.json
└── package.json           # Optional root package.json

Key Concepts

Vite Frontend: Pure SPA that builds to static dist/ directory
Capacitor Integration: Wraps the static Vite build (frontend/dist) into native iOS/Android apps
Next.js Backend: Separate API server (runs on port 3000, frontend on 3001)
API Configuration: Critical distinction - native apps must use deployed backend URL, not localhost
Ionic React: Mobile-optimized UI components that work on web and native

Core Setup Instructions

Step 1: Create Vite Frontend

npm create vite@latest frontend -- --template react-ts
cd frontend
npm install

Step 2: Install Capacitor and Ionic Dependencies

# Capacitor Core
npm install @capacitor/core @capacitor/cli @capacitor/android @capacitor/ios

# Ionic React
npm install @ionic/react ionicons

# Optional but recommended
npm install @capacitor/preferences

Step 3: Initialize Capacitor

npx cap init

When prompted:

App name: YourAppName
App ID: com.yourcompany.yourapp (use reverse domain notation)
Web dir: dist (Vite outputs to dist/ by default)

This creates capacitor.config.ts in the frontend/ directory.

Step 4: Configure Capacitor

Update frontend/capacitor.config.ts:

import { CapacitorConfig } from "@capacitor/cli";

const config: CapacitorConfig = {
  appId: "com.yourcompany.yourapp",
  appName: "YourAppName",
  webDir: "dist",
  bundledWebRuntime: false,
};

export default config;

Important: webDir must be "dist" to match Vite's output directory. bundledWebRuntime: false is recommended for better performance.

Step 5: Configure Vite

Update frontend/vite.config.mts:

import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [react()],
  server: {
    host: true, // Allows access from network (useful for testing on devices)
  },
});

No special Capacitor-specific configuration needed - Vite always produces static assets.

Step 6: Create HTML Entry Point

Create frontend/index.html:

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>Your App Name</title>
    <base href="/" />
    <meta name="color-scheme" content="light dark" />
    <meta
      name="viewport"
      content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"
    />
    <meta name="format-detection" content="telephone=no" />
    <meta name="msapplication-tap-highlight" content="no" />
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx">

Key viewport settings: viewport-fit=cover ensures content extends under notches/safe areas on mobile devices.

Step 7: Create Main Entry Point with Ionic Setup

Create frontend/src/main.tsx:

import React from 'react';
import { createRoot } from 'react-dom/client';
import { setupIonicReact } from '@ionic/react';
import { Capacitor } from '@capacitor/core';
import App from './App';

/* Core CSS required for Ionic components to work properly */
import '@ionic/react/css/core.css';

/* Basic CSS for apps built with Ionic */
import '@ionic/react/css/normalize.css';
import '@ionic/react/css/structure.css';
import '@ionic/react/css/typography.css';

/* Optional CSS utils */
import '@ionic/react/css/padding.css';
import '@ionic/react/css/float-elements.css';
import '@ionic/react/css/text-alignment.css';
import '@ionic/react/css/text-transformation.css';
import '@ionic/react/css/flex-utils.css';
import '@ionic/react/css/display.css';

/* Theme variables */
import './theme/variables.css';

setupIonicReact();

// Optional: Platform detection for logging/config
const platform = .() ?  : ;
 platformName = .();
.(, platform, platformName);

 container = .();
 root = (container!);

root.(
  
);

Critical: setupIonicReact() must be called before rendering any Ionic components.

Step 8: Create App Component with Routing

Create frontend/src/App.tsx:

import { IonApp } from '@ionic/react';
import { BrowserRouter as Router, Routes, Route, Navigate } from 'react-router-dom';
import Home from './pages/Home';
import Settings from './pages/Settings';

const App: React.FC = () => {
  return (
    <IonApp style={{
      margin: 0,
      padding: 0,
      height: '100vh',
      minHeight: '100vh',
      display: 'flex',
      flexDirection: 'column'
    }}>
      <Router>
        <Routes>
          <Route path="/" element={<Navigate to="/home" replace />} />
          } />
          } />
        
      
    
  );
};

  ;

Key points:

Wrap entire app in <IonApp> (required for Ionic components)
Use react-router-dom for client-side routing (not file-based like Next.js)
All routes defined in one place

Step 9: Create API Configuration (Critical)

Create frontend/src/lib/apiConfig.ts:

import { Capacitor } from "@capacitor/core";

const DEFAULT_DEV = "http://localhost:3000";
const DEFAULT_PROD = "https://your-api.com";

/**
 * Get the API base URL for making API calls.
 * 
 * CRITICAL: In Capacitor native apps (iOS/Android), always use deployed backend.
 * Localhost on device is the device itself, not your development machine.
 */
export function getApiBaseUrl(): string {
  const fromEnv = import.meta.env.VITE_API_URL;

  // Environment variable override (highest priority)
  if (fromEnv && typeof fromEnv === "string") {
    return fromEnv.replace(/\/$/, "");
  }

  // Native platform: always use production/deployed URL
  if (Capacitor.isNativePlatform()) {
    const prodUrl = import.meta.env.VITE_PROD_API_URL ?? DEFAULT_PROD;
    return (typeof prodUrl === "string" ? prodUrl : DEFAULT_PROD).replace(/\/$/, "");
  }

  // Web platform: use localhost in dev, production in prod
   apiUrl = ... ?  : ;
   apiUrl;
}


  ():  {
   base = ();
   path = endpoint.() ? endpoint : ;
   ;
}

Critical rule: Native apps (iOS/Android) must use a deployed backend URL. Localhost on a device refers to the device itself, not your development machine.

Step 10: Configure TypeScript

Update frontend/tsconfig.json:

{
  "compilerOptions": {
    "target": "ES2020",
    "useDefineForClassFields": true,
    "lib": ["ES2020", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react-jsx"

Key differences from Next.js: Uses jsx: "react-jsx" (not "preserve"), no Next.js TypeScript plugin, moduleResolution: "bundler" for Vite.

Step 11: Update Package Scripts

Update frontend/package.json scripts:

{
  "scripts": {
    "dev": "vite --port 3001",
    "build": "vite build",
    "preview": "vite preview",
    "cap:sync": "npm run build && npx cap sync",
    "cap:open:ios": "npx cap open ios",
    "cap:open:android": "npx cap open android",
    "cap:run:ios": "npx cap run ios"
  }
}

Important: cap:sync runs npm run build first to ensure dist/ exists before syncing to native platforms.

Step 12: Add Native Platforms

# iOS
npx cap add ios
npx cap sync

# Android
npx cap add android
npx cap sync

All Capacitor commands run from the frontend/ directory.

Environment Variables

Create frontend/.env files:

.env.development:

VITE_API_URL=http://localhost:3000
VITE_PROD_API_URL=https://your-api.com

.env.production:

VITE_API_URL=https://your-api.com
VITE_PROD_API_URL=https://your-api.com

Important: Use VITE_ prefix for all environment variables that should be accessible in the frontend code. Variables without this prefix are not exposed to the client.

Backend Setup (Next.js)

The backend is a standard Next.js API. Key points:

CORS Configuration: Backend must allow requests from:
- http://localhost:3001 (web dev)
- Capacitor's origin (varies by platform)
- Your production frontend domain
API Routes: Create routes in backend/src/app/api/:

// backend/src/app/api/example/route.ts
export async function GET() {
  return Response.json({ message: 'Hello from Next.js API' });
}

Port: Backend typically runs on port 3000, frontend on 3001.

Optional Enhancements

Theme Variables

Create frontend/src/theme/variables.css:

:root {
  --ion-color-primary: #3880ff;
  --ion-color-primary-rgb: 56, 128, 255;
  --ion-color-primary-contrast: #ffffff;
  --ion-color-primary-shade: #3171e0;
  --ion-color-primary-tint: #4c8dff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ion-color-primary: #428cff;
    /* ... other dark mode variables ... */
  }
}

Tab Bar Navigation

Example tab bar that only shows on certain routes:

import { IonTabBar, IonTabButton, IonIcon, IonLabel } from '@ionic/react';
import { useLocation, useNavigate } from 'react-router-dom';
import { home, settings } from 'ionicons/icons';

const TabBar: React.FC = () => {
  const location = useLocation();
  const navigate = useNavigate();
  const isAppRoute = location.pathname.startsWith('/app');

  if (!isAppRoute) {
    return null;
  }

  return (
    <IonTabBar style={{
      position: 'fixed',
      bottom: 0,
      left: 0,
      right: 0,
      zIndex: 1000
    }}>
      <IonTabButton onClick={() => navigate('/app/home')}>
        <IonIcon icon={home} />
        <>Home
      
       navigate('/app/settings')}>
        
        Settings
      
    
  );
};

Optional Capacitor Plugins

npm install @capacitor/splash-screen @capacitor/status-bar @capacitor/app

These are optional - the minimal setup works without them.

Development Workflow

Running Development Server

# Frontend (from frontend/)
npm run dev
# Runs on http://localhost:3001

# Backend (from backend/)
npm run dev
# Runs on http://localhost:3000

Building for Capacitor

# Build and sync to both platforms
npm run cap:sync

# Build and sync to iOS only
npm run build && npx cap sync ios

# Build and sync to Android only
npm run build && npx cap sync android

Important: Always run npm run build before cap sync to ensure dist/ is up to date.

Opening Native Projects

# Open iOS project in Xcode
npm run cap:open:ios

# Open Android project in Android Studio
npm run cap:open:android

Testing on Devices

iOS: Connect device, select it in Xcode, click Run
Android: Connect device, enable USB debugging, click Run in Android Studio

Note: For API testing on devices, ensure your backend is deployed and accessible (not localhost).

Common Patterns

Platform Detection

import { Capacitor } from '@capacitor/core';

if (Capacitor.isNativePlatform()) {
  // Native iOS/Android code
} else {
  // Web code
}

const platform = Capacitor.getPlatform(); // "ios", "android", or "web"

API Client Usage

import { getApiUrl } from './lib/apiConfig';

async function fetchData() {
  const response = await fetch(getApiUrl('/api/data'));
  return response.json();
}

Client Components

All components using Capacitor APIs or Ionic components should be client components (no SSR concerns with Vite, but good practice):

import { Capacitor } from '@capacitor/core';

export default function MyComponent() {
  // Can use Capacitor APIs directly
  const platform = Capacitor.getPlatform();
  return <div>Platform: {platform}</div>;
}

Troubleshooting

Build Errors

Issue: dist/ directory not found during cap sync

Solution: Run npm run build first, then cap sync

Issue: API calls failing on device

Solution: Ensure getApiBaseUrl() uses production URL for native platforms. Check that backend CORS allows Capacitor origins.

Capacitor Sync Issues

Issue: Changes not appearing in native app

Solution:
1. Run npm run build to rebuild frontend
2. Run npx cap sync to copy files to native projects
3. Rebuild native app in Xcode/Android Studio

Issue: Native dependencies not updating

Solution:
1. Delete ios/Pods and android/.gradle
2. Run npx cap sync again

API Configuration Issues

Issue: API calls work on web but fail on device

Solution: This is almost always because the device is trying to use localhost. Ensure getApiBaseUrl() returns production URL when Capacitor.isNativePlatform() is true.

Issue: CORS errors

Solution: Backend must allow requests from:
- http://localhost:3001 (web dev)
- capacitor://localhost (iOS)
- http://localhost (Android)
- Your production frontend domain

Differences from Next.js + Capacitor

This architecture differs from the nextjs-capacitor skill:

Aspect	Next.js Frontend	Vite Frontend
Framework	Next.js (App Router)	Vite + React
Build	Conditional static export (`CAPACITOR_BUILD=true`)	Always static (`vite build`)
Routing	File-based (app/page.tsx)	react-router-dom (Routes/Route)
Entry	layout.tsx → IonicApp.tsx	index.html → main.tsx → App.tsx
Config	next.config.js (webpack, conditional)	vite.config.mts (simple)
Backend	Optional monorepo sibling	Separate Next.js API server
API URL	process.env.NEXT_PUBLIC_*	import.meta.env.VITE_*

capacitor-vite-nextjs-backend

来源信息

安装方式

检查来源文件

同仓库更多 Skills

同仓库更多 Skills

Capacitor + Vite Frontend + Next.js Backend

Purpose

When to Use

Architecture Overview

Monorepo Structure

Key Concepts

Core Setup Instructions

Step 1: Create Vite Frontend

Step 2: Install Capacitor and Ionic Dependencies

Step 3: Initialize Capacitor

Step 4: Configure Capacitor

Step 5: Configure Vite

Step 6: Create HTML Entry Point

Step 7: Create Main Entry Point with Ionic Setup

Step 8: Create App Component with Routing

Step 9: Create API Configuration (Critical)

Step 10: Configure TypeScript

Step 11: Update Package Scripts

Step 12: Add Native Platforms

Environment Variables

Backend Setup (Next.js)

Optional Enhancements

Theme Variables

Tab Bar Navigation

Optional Capacitor Plugins

Development Workflow

Running Development Server

Building for Capacitor

Opening Native Projects

Testing on Devices

Common Patterns

Platform Detection

API Client Usage

Client Components

Troubleshooting

Build Errors

Capacitor Sync Issues

API Configuration Issues

Differences from Next.js + Capacitor

Additional Resources

Capacitor + Vite Frontend + Next.js Backend

Purpose

When to Use

Architecture Overview

Monorepo Structure

Key Concepts

Core Setup Instructions

Step 1: Create Vite Frontend

Step 2: Install Capacitor and Ionic Dependencies

Step 3: Initialize Capacitor

Step 4: Configure Capacitor

Step 5: Configure Vite

Step 6: Create HTML Entry Point

Step 7: Create Main Entry Point with Ionic Setup

Step 8: Create App Component with Routing

Step 9: Create API Configuration (Critical)

Step 10: Configure TypeScript

Step 11: Update Package Scripts

Step 12: Add Native Platforms

Environment Variables

Backend Setup (Next.js)

Optional Enhancements

Theme Variables

Tab Bar Navigation

Optional Capacitor Plugins

Development Workflow

Running Development Server

Building for Capacitor

Opening Native Projects

Testing on Devices

Common Patterns

Platform Detection

API Client Usage

Client Components