universal-react-server-bundle/server.js at master · jakoblind/universal-react-server-bundle · GitHub

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import express from "express";
import path from "path";
import React from "react";
import ReactDOMServer from "react-dom/server";
import App from "./client/app.js";

function handleRender(req, res) {
    const reactHtml = ReactDOMServer.renderToString(<App />);
    const htmlTemplate = `<!DOCTYPE html>
<html>
    <head>
        <title>Universal React server bundle</title>
    </head>
    <body>
        <div id="app">${reactHtml}</div>
        <script src="public/client.bundle.js"></script>
    </body>
</html>`;
    res.send(htmlTemplate);
}

const app = express();

app.use("/public", express.static("./public"));

app.get("*", handleRender);
app.listen(3000);
console.log("App is running on http://localhost:3000");