vercel__next.js/examples/with-elasticsearch/pages/index.tsx

import type { InferGetServerSidePropsType } from "next";
import Head from "next/head";
import Image from "next/image";
import styles from "@/styles/Home.module.css";
import { Inter } from "next/font/google";
import { connectToElasticsearch } from "@/lib/elasticsearch";

const inter = Inter({ subsets: ["latin"] });

type HomePageProps = InferGetServerSidePropsType<typeof getServerSideProps>;

export default function Home({ isConnected }: HomePageProps) {
  const connectionStatus = isConnected ? (
    <p>You are connected to Elasticsearch</p>
  ) : (
    <p>
      You are NOT connected to Elasticsearch. Check the{" "}
      <code className={styles.code}>README.md</code> for instructions.
    </p>
  );

  return (
    <>
      <Head>
        <title>Create Next App</title>
        <meta name="description" content="Generated by create next app" />
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <link rel="icon" href="/favicon.ico" />
      </Head>
      <main className={styles.main}>
        <div className={styles.description}>
          <p>
            Get started by editing&nbsp;
            <code className={styles.code}>pages/index.tsx</code>
          </p>
          <div>
            <a
              href="https://vercel.com?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
              target="_blank"
              rel="noopener noreferrer"
            >
              By{" "}
              <Image
                src="/vercel.svg"
                alt="Vercel Logo"
                className={styles.vercelLogo}
                width={100}
                height={24}
                priority
              />
            </a>
          </div>
        </div>

        <div className={styles.center} style={{ paddingBottom: 0 }}>
          <Image
            className={styles.logo}
            src="/next.svg"
            alt="Next.js Logo"
            width={180}
            height={37}
            priority
          />
          <div className={styles.thirteen}>
            <Image
              src="/thirteen.svg"
              alt="13"
              width={40}
              height={31}
              priority
            />
          </div>
        </div>

        <div
          className={`${styles.center} ${inter.className}`}
          style={{ paddingBlock: 20 }}
        >
          <h2>with Elasticsearch</h2>
        </div>

        <div className={`${styles.center} ${styles.status}`}>
          {connectionStatus}
        </div>

        <div className={styles.grid}>
          <a
            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
            className={styles.card}
            target="_blank"
            rel="noopener noreferrer"
          >
            <h2 className={inter.className}>
              Docs <span>-&gt;</span>
            </h2>
            <p className={inter.className}>
              Find in-depth information about Next.js features and&nbsp;API.
            </p>
          </a>

          <a
            href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
            className={styles.card}
            target="_blank"
            rel="noopener noreferrer"
          >
            <h2 className={inter.className}>
              Learn <span>-&gt;</span>
            </h2>
            <p className={inter.className}>
              Learn about Next.js in an interactive course with&nbsp;quizzes!
            </p>
          </a>

          <a
            href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
            className={styles.card}
            target="_blank"
            rel="noopener noreferrer"
          >
            <h2 className={inter.className}>
              Templates <span>-&gt;</span>
            </h2>
            <p className={inter.className}>
              Discover and deploy boilerplate example Next.js&nbsp;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}
            target="_blank"
            rel="noopener noreferrer"
          >
            <h2 className={inter.className}>
              Deploy <span>-&gt;</span>
            </h2>
            <p className={inter.className}>
              Instantly deploy your Next.js site to a shareable URL
              with&nbsp;Vercel.
            </p>
          </a>
        </div>
      </main>
    </>
  );
}

export const getServerSideProps = async () => {
  let isConnected: boolean = false;
  const client = await connectToElasticsearch();
  if (client !== "ERR_ENV_NOT_DEFINED") {
    isConnected = true;
  }
  return {
    props: { isConnected },
  };
};