How to save a static page at the root using express?

Question

Express.js

Now there is such a code, the index page throws a 404 component from the react rotator. How to rewrite the router? I want a static landing on / index. The rest is react. Or maybe something else is needed?

app.use(express.static(path.join(__dirname, '../build')));

// secure your private routes with jwt authentication middleware
app.all('/api/v1/*', (req, res, next) => auth(req, res, next));

// Handle all v1 routes
fs.readdirSync(`${__dirname}/routes/v1`).forEach((file) => {
  require(`./routes/v1/${file}`)(app);
});

app.get('/', (req, res) => {
  res.sendFile(path.resolve(__dirname, '../build/landing/index.html'));
});

app.all('*', (req, res) => res.status(404).json({
  message: "Seems like the endpoint you're looking for no longer exists ",
}));

app.get('*', (req, res) => {
  res.sendFile(path.resolve(__dirname, '../build/index.html'));
});