Migrate from Next.js to SvelteKit

- Replace Next.js app with SvelteKit + adapter-node
- basePath /bodenfeuchte configured in svelte.config.js
- MQTT listener starts via hooks.server.ts on server boot
- Chart.js replaces Recharts for the moisture graph
- Dockerfile simplified: single build step, node build output
- Removed custom server.ts (no longer needed)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-05-15 20:49:33 +02:00
parent a2af88136c
commit 534c055598
35 changed files with 3191 additions and 8370 deletions
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node_modules
.next
data
.git
*.log
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@@ -1,23 +1,8 @@
# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
/node_modules
/.pnp
.pnp.*
.yarn/*
!.yarn/patches
!.yarn/plugins
!.yarn/releases
!.yarn/versions
# testing
/coverage
# next.js
/.next/
/out/
# production
# SvelteKit build output
/.svelte-kit
/build
# misc
@@ -30,7 +15,7 @@ yarn-debug.log*
yarn-error.log*
.pnpm-debug.log*
# env files (can opt-in for committing if needed)
# env files
.env
.env.local
.env.*.local
@@ -38,12 +23,5 @@ yarn-error.log*
# sqlite data
/data/*.db
# compiled server
/dist
# vercel
.vercel
# typescript
*.tsbuildinfo
next-env.d.ts
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engine-strict=true
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<!-- BEGIN:nextjs-agent-rules -->
# This is NOT the Next.js you know
This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` before writing any code. Heed deprecation notices.
<!-- END:nextjs-agent-rules -->
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@AGENTS.md
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@@ -1,27 +1,22 @@
FROM node:20-alpine AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev
FROM node:20-alpine AS builder
WORKDIR /app
RUN apk add --no-cache python3 make g++
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build
RUN npx tsc --project tsconfig.server.json
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
COPY --from=deps /app/node_modules ./node_modules
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/public ./public
RUN apk add --no-cache python3 make g++
COPY package*.json ./
RUN npm ci --omit=dev
COPY --from=builder /app/build ./build
RUN mkdir -p data
EXPOSE 3000
CMD ["node", "dist/server.js"]
ENV PORT=3000
CMD ["node", "build"]
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This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
## Getting Started
First, run the development server:
```bash
npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev
```
Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
## Learn More
To learn more about Next.js, take a look at the following resources:
- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
## Deploy on Vercel
The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.
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import { getLast6Hours } from '@/lib/db';
export const dynamic = 'force-dynamic';
export async function GET() {
const rows = getLast6Hours();
return Response.json(rows);
}
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@import "tailwindcss";
:root {
--background: #ffffff;
--foreground: #171717;
}
@theme inline {
--color-background: var(--background);
--color-foreground: var(--foreground);
--font-sans: var(--font-geist-sans);
--font-mono: var(--font-geist-mono);
}
@media (prefers-color-scheme: dark) {
:root {
--background: #0a0a0a;
--foreground: #ededed;
}
}
body {
background: var(--background);
color: var(--foreground);
font-family: Arial, Helvetica, sans-serif;
}
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import type { Metadata } from "next";
import { Geist, Geist_Mono } from "next/font/google";
import "./globals.css";
const geistSans = Geist({
variable: "--font-geist-sans",
subsets: ["latin"],
});
const geistMono = Geist_Mono({
variable: "--font-geist-mono",
subsets: ["latin"],
});
export const metadata: Metadata = {
title: "Create Next App",
description: "Generated by create next app",
};
export default function RootLayout({
children,
}: Readonly<{
children: React.ReactNode;
}>) {
return (
<html
lang="en"
className={`${geistSans.variable} ${geistMono.variable} h-full antialiased`}
>
<body className="min-h-full flex flex-col">{children}</body>
</html>
);
}
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'use client';
import { useEffect, useState } from 'react';
import {
LineChart,
Line,
XAxis,
YAxis,
CartesianGrid,
Tooltip,
ResponsiveContainer,
} from 'recharts';
type Measurement = {
timestamp: number;
soil_moisture: number;
};
function formatTime(ts: number): string {
return new Date(ts).toLocaleTimeString('de-DE', {
hour: '2-digit',
minute: '2-digit',
});
}
export default function Home() {
const [data, setData] = useState<Measurement[]>([]);
const [lastUpdate, setLastUpdate] = useState<string>('');
const fetchData = async () => {
const res = await fetch('/bodenfeuchte/api/data');
const json: Measurement[] = await res.json();
setData(json);
setLastUpdate(new Date().toLocaleTimeString('de-DE'));
};
useEffect(() => {
fetchData();
const interval = setInterval(fetchData, 60_000);
return () => clearInterval(interval);
}, []);
const latest = data.at(-1);
return (
<main className="min-h-screen bg-gray-950 text-gray-100 p-8">
<h1 className="text-2xl font-semibold mb-1">Bodenfeuchte</h1>
<p className="text-sm text-gray-400 mb-6">
Letzte 6 Stunden · Aktualisierung: {lastUpdate || '…'}
</p>
{latest && (
<div className="mb-8 inline-block bg-gray-800 rounded-xl px-6 py-4">
<span className="text-5xl font-bold text-green-400">
{latest.soil_moisture.toFixed(1)}
</span>
<span className="text-2xl text-gray-400 ml-2">%</span>
<p className="text-xs text-gray-500 mt-1">
{formatTime(latest.timestamp)} Uhr
</p>
</div>
)}
<div className="bg-gray-900 rounded-2xl p-4" style={{ height: 360 }}>
{data.length === 0 ? (
<div className="flex items-center justify-center h-full text-gray-500">
Noch keine Daten vorhanden
</div>
) : (
<ResponsiveContainer width="100%" height="100%">
<LineChart data={data} margin={{ top: 8, right: 16, bottom: 8, left: 0 }}>
<CartesianGrid strokeDasharray="3 3" stroke="#374151" />
<XAxis
dataKey="timestamp"
tickFormatter={formatTime}
stroke="#6b7280"
tick={{ fontSize: 12 }}
minTickGap={40}
/>
<YAxis
domain={[0, 100]}
unit="%"
stroke="#6b7280"
tick={{ fontSize: 12 }}
width={45}
/>
<Tooltip
formatter={(v) => [`${Number(v).toFixed(1)} %`, 'Bodenfeuchte']}
labelFormatter={(ts) => formatTime(Number(ts))}
contentStyle={{ background: '#1f2937', border: 'none', borderRadius: 8 }}
/>
<Line
type="monotone"
dataKey="soil_moisture"
stroke="#4ade80"
strokeWidth={2}
dot={false}
activeDot={{ r: 4 }}
/>
</LineChart>
</ResponsiveContainer>
)}
</div>
</main>
);
}
Executable
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#!/bin/bash
set -e
REGISTRY="docker.citysensor.de"
IMAGE_NAME="bodenfeuchte"
TAG="${1:-latest}"
FULL_IMAGE="${REGISTRY}/${IMAGE_NAME}:${TAG}"
BUILD_DATE=$(date +%d.%m.%Y)
echo "=========================================="
echo "Bodenfeuchte Deploy Script"
echo "=========================================="
echo "Registry: ${REGISTRY}"
echo "Image: ${IMAGE_NAME}"
echo "Tag: ${TAG}"
echo "Build-Datum: ${BUILD_DATE}"
echo "=========================================="
echo ""
echo ">>> Login zu ${REGISTRY}..."
docker login "${REGISTRY}"
echo ""
echo ">>> Richte Multiplatform Builder ein..."
if ! docker buildx inspect multiplatform-builder &>/dev/null; then
docker buildx create --name multiplatform-builder --driver docker-container --bootstrap
fi
docker buildx use multiplatform-builder
echo ""
echo ">>> Baue Multiplatform Docker Image und pushe..."
docker buildx build \
--platform linux/amd64,linux/arm64 \
--build-arg BUILD_DATE="${BUILD_DATE}" \
--provenance=false \
-t "${FULL_IMAGE}" \
--push \
.
echo ">>> Tagge ${IMAGE_NAME} als :latest..."
docker buildx imagetools create \
-t "${REGISTRY}/${IMAGE_NAME}:latest" \
"${FULL_IMAGE}"
echo ""
echo "=========================================="
echo "Deploy erfolgreich abgeschlossen!"
echo "=========================================="
echo ""
echo "Auf dem Server ausführen:"
echo " docker pull ${FULL_IMAGE}"
echo " docker-compose -f docker-compose.prod.yml up -d"
echo ""
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import { defineConfig, globalIgnores } from "eslint/config";
import nextVitals from "eslint-config-next/core-web-vitals";
import nextTs from "eslint-config-next/typescript";
const eslintConfig = defineConfig([
...nextVitals,
...nextTs,
// Override default ignores of eslint-config-next.
globalIgnores([
// Default ignores of eslint-config-next:
".next/**",
"out/**",
"build/**",
"next-env.d.ts",
]),
]);
export default eslintConfig;
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import type { NextConfig } from "next";
const nextConfig: NextConfig = {
basePath: '/bodenfeuchte',
};
export default nextConfig;
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{
"name": "bodenfeuchte",
"version": "0.1.0",
"private": true,
"scripts": {
"dev": "ts-node --project tsconfig.server.json server.ts",
"build": "next build",
"start": "node dist/server.js",
"build:server": "tsc --project tsconfig.server.json",
"lint": "eslint"
},
"dependencies": {
"better-sqlite3": "^12.10.0",
"mqtt": "^5.15.1",
"next": "16.2.6",
"react": "19.2.4",
"react-dom": "19.2.4",
"recharts": "^3.8.1"
},
"devDependencies": {
"@tailwindcss/postcss": "^4",
"@types/better-sqlite3": "^7.6.13",
"@types/node": "^20",
"@types/react": "^19",
"@types/react-dom": "^19",
"eslint": "^9",
"eslint-config-next": "16.2.6",
"tailwindcss": "^4",
"ts-node": "^10.9.2",
"typescript": "^5"
}
"name": "bodenfeuchte",
"private": true,
"version": "0.1.0",
"type": "module",
"scripts": {
"dev": "vite dev",
"build": "vite build",
"preview": "vite preview",
"prepare": "svelte-kit sync || echo ''",
"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch"
},
"dependencies": {
"better-sqlite3": "^12.10.0",
"chart.js": "^4.5.0",
"mqtt": "^5.15.1"
},
"devDependencies": {
"@sveltejs/adapter-node": "^5.2.11",
"@sveltejs/kit": "^2.57.0",
"@sveltejs/vite-plugin-svelte": "^7.0.0",
"@types/better-sqlite3": "^7.6.13",
"svelte": "^5.55.2",
"svelte-check": "^4.4.6",
"typescript": "^6.0.2",
"vite": "^8.0.7"
}
}
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const config = {
plugins: {
"@tailwindcss/postcss": {},
},
};
export default config;
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import { createServer } from 'http';
import { parse } from 'url';
import next from 'next';
import { startMqttListener } from './lib/mqtt-listener';
const dev = process.env.NODE_ENV !== 'production';
const app = next({ dev });
const handle = app.getRequestHandler();
app.prepare().then(() => {
startMqttListener();
createServer((req, res) => {
const parsedUrl = parse(req.url ?? '/', true);
handle(req, res, parsedUrl);
}).listen(3000, () => {
console.log('> Ready on http://localhost:3000');
});
});
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// See https://svelte.dev/docs/kit/types#app.d.ts
// for information about these interfaces
declare global {
namespace App {
// interface Error {}
// interface Locals {}
// interface PageData {}
// interface PageState {}
// interface Platform {}
}
}
export {};
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script src="https://cdn.tailwindcss.com"></script>
%sveltekit.head%
</head>
<body data-sveltekit-preload-data="hover">
<div style="display: contents">%sveltekit.body%</div>
</body>
</html>
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import { startMqttListener } from '$lib/mqtt-listener';
startMqttListener();
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<script lang="ts">
import { base } from '$app/paths';
import { onMount, onDestroy } from 'svelte';
import { Chart, LineController, LineElement, PointElement, LinearScale, TimeScale, Tooltip, Filler } from 'chart.js';
import 'chart.js/auto';
type Measurement = { timestamp: number; soil_moisture: number };
let data = $state<Measurement[]>([]);
let lastUpdate = $state('');
let canvas: HTMLCanvasElement;
let chart: Chart | null = null;
let interval: ReturnType<typeof setInterval>;
async function fetchData() {
const res = await fetch(`${base}/api/data`);
data = await res.json();
lastUpdate = new Date().toLocaleTimeString('de-DE');
updateChart();
}
function updateChart() {
if (!chart) return;
chart.data.labels = data.map(d => new Date(d.timestamp).toLocaleTimeString('de-DE', { hour: '2-digit', minute: '2-digit' }));
chart.data.datasets[0].data = data.map(d => d.soil_moisture);
chart.update();
}
onMount(async () => {
chart = new Chart(canvas, {
type: 'line',
data: {
labels: [],
datasets: [{
label: 'Bodenfeuchte (%)',
data: [],
borderColor: '#4ade80',
backgroundColor: 'rgba(74, 222, 128, 0.1)',
borderWidth: 2,
pointRadius: 0,
pointHoverRadius: 4,
fill: true,
tension: 0.3,
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
x: {
ticks: { color: '#9ca3af', maxTicksLimit: 8 },
grid: { color: '#374151' },
},
y: {
min: 0,
max: 100,
ticks: { color: '#9ca3af', callback: v => `${v} %` },
grid: { color: '#374151' },
}
},
plugins: {
legend: { display: false },
tooltip: {
callbacks: {
label: ctx => `${Number(ctx.raw).toFixed(1)} %`
}
}
}
}
});
await fetchData();
interval = setInterval(fetchData, 60_000);
});
onDestroy(() => {
clearInterval(interval);
chart?.destroy();
});
const latest = $derived(data.at(-1));
</script>
<main class="min-h-screen bg-gray-950 text-gray-100 p-8">
<h1 class="text-2xl font-semibold mb-1">Bodenfeuchte</h1>
<p class="text-sm text-gray-400 mb-6">
Letzte 6 Stunden · Aktualisierung: {lastUpdate || '…'}
</p>
{#if latest}
<div class="mb-8 inline-block bg-gray-800 rounded-xl px-6 py-4">
<span class="text-5xl font-bold text-green-400">{latest.soil_moisture.toFixed(1)}</span>
<span class="text-2xl text-gray-400 ml-2">%</span>
<p class="text-xs text-gray-500 mt-1">
{new Date(latest.timestamp).toLocaleTimeString('de-DE', { hour: '2-digit', minute: '2-digit' })} Uhr
</p>
</div>
{/if}
<div class="bg-gray-900 rounded-2xl p-4" style="height: 360px;">
{#if data.length === 0}
<div class="flex items-center justify-center h-full text-gray-500">
Noch keine Daten vorhanden
</div>
{/if}
<canvas bind:this={canvas} class={data.length === 0 ? 'hidden' : ''}></canvas>
</div>
</main>
+6
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@@ -0,0 +1,6 @@
import { json } from '@sveltejs/kit';
import { getLast6Hours } from '$lib/db';
export function GET() {
return json(getLast6Hours());
}
+13
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@@ -0,0 +1,13 @@
import adapter from '@sveltejs/adapter-node';
/** @type {import('@sveltejs/kit').Config} */
const config = {
kit: {
adapter: adapter(),
paths: {
base: '/bodenfeuchte'
}
}
};
export default config;
+18 -32
View File
@@ -1,34 +1,20 @@
{
"compilerOptions": {
"target": "ES2017",
"lib": ["dom", "dom.iterable", "esnext"],
"allowJs": true,
"skipLibCheck": true,
"strict": true,
"noEmit": true,
"esModuleInterop": true,
"module": "esnext",
"moduleResolution": "bundler",
"resolveJsonModule": true,
"isolatedModules": true,
"jsx": "react-jsx",
"incremental": true,
"plugins": [
{
"name": "next"
}
],
"paths": {
"@/*": ["./*"]
}
},
"include": [
"next-env.d.ts",
"**/*.ts",
"**/*.tsx",
".next/types/**/*.ts",
".next/dev/types/**/*.ts",
"**/*.mts"
],
"exclude": ["node_modules"]
"extends": "./.svelte-kit/tsconfig.json",
"compilerOptions": {
"rewriteRelativeImportExtensions": true,
"allowJs": true,
"checkJs": true,
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"resolveJsonModule": true,
"skipLibCheck": true,
"sourceMap": true,
"strict": true,
"moduleResolution": "bundler"
}
// Path aliases are handled by https://svelte.dev/docs/kit/configuration#alias
// except $lib which is handled by https://svelte.dev/docs/kit/configuration#files
//
// To make changes to top-level options such as include and exclude, we recommend extending
// the generated config; see https://svelte.dev/docs/kit/configuration#typescript
}
-17
View File
@@ -1,17 +0,0 @@
{
"compilerOptions": {
"target": "ES2020",
"module": "commonjs",
"moduleResolution": "node",
"esModuleInterop": true,
"skipLibCheck": true,
"strict": true,
"outDir": "dist",
"rootDir": ".",
"paths": {
"@/*": ["./*"]
}
},
"include": ["server.ts", "lib/**/*.ts"],
"exclude": ["node_modules", ".next"]
}
+6
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@@ -0,0 +1,6 @@
import { sveltekit } from '@sveltejs/kit/vite';
import { defineConfig } from 'vite';
export default defineConfig({
plugins: [sveltekit()]
});