/
index.js
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/
index.js
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import Head from 'next/head';
import styles from '../styles/Home.module.css';
import { useEffect, useState } from 'react';
import Quagga from '@ericblade/quagga2';
export default function Home() {
const [canvas, setCanvas] = useState(null);
useEffect(() => {
const defaultDecoders = ['ean_reader'];
const rect = canvas?.getBoundingClientRect();
const defaultConstraints = {
height: rect?.width,
width: rect?.height,
};
Quagga.init(
{
inputStream: {
type: 'LiveStream',
target: canvas || undefined,
constraints: {
...defaultConstraints,
},
},
decoder: { readers: defaultDecoders },
locate: true,
locator: {
patchSize: 'medium',
halfSample: true,
},
},
(err) => {
Quagga.start();
}
);
}, []);
return (
<div className={styles.container}>
<Head>
<title>Create Next App</title>
</Head>
<main className={styles.main}>
<h1 className={styles.title}>
Welcome to <a href="https://nextjs.org">Next.js!</a>
</h1>
<p className={styles.description}>
Get started by editing{' '}
<code className={styles.code}>pages/index.js</code>
</p>
<div className={styles.grid}>
<a href="https://nextjs.org/docs" className={styles.card}>
<h3>Documentation →</h3>
<p>Find in-depth information about Next.js features and API.</p>
</a>
<a href="https://nextjs.org/learn" className={styles.card}>
<h3>Learn →</h3>
<p>Learn about Next.js in an interactive course with quizzes!</p>
</a>
<a
href="https://github.com/vercel/next.js/tree/master/examples"
className={styles.card}
>
<h3>Examples →</h3>
<p>Discover and deploy boilerplate example Next.js projects.</p>
</a>
<a
href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
className={styles.card}
>
<h3>Deploy →</h3>
<p>
Instantly deploy your Next.js site to a public URL with Vercel.
</p>
</a>
</div>
</main>
<footer className={styles.footer}>
<a
href="https://vercel.com?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
target="_blank"
rel="noopener noreferrer"
>
Powered by{' '}
</a>
</footer>
</div>
);
}