server.js

var compression = require('compression');
var passport = require("./client/config/passport");
var compression = require('compression');
const express = require("express");
var session = require("express-session");
const path = require("path");
const PORT = process.env.PORT || 8080;
var db = require("./client/models");

const app = express();
app.use(compression());
app.use(express.urlencoded({ extended: true }));
app.use(express.json());
// Serve up static assets (usually on heroku)
if (process.env.NODE_ENV === "production") {
  app.use(express.static("client/build"));
}
// App session
app.use(session({ secret: "keyboard cat", resave: true, saveUninitialized: true }));
app.use(passport.initialize());
app.use(passport.session());

// Send every request to the React app
require("./client/src/api-routes.js")(app);
// Define any API routes before this runs
app.get("*", function(req, res) {
  res.sendFile(path.join(__dirname, "./client/build/index.html"));
});

db.sequelize.sync().then(function() {
  app.listen(PORT, function() {
    console.log(`🌎 ==> API server now on port ${PORT}!`);
  });
});

function shouldCompress (req, res) {
  if (req.headers['x-no-compression']) {
    // don't compress responses with this request header
    return false
  }

  // fallback to standard filter function
  return compression.filter(req, res)
}