front end not being deployed in Heroku - node.js

Question

I'm trying to deploy my first MERN website to heroku. I have been following different tutorials but I am having trouble connecting the front end with the back end, although they connect fine in development mode.
Just to clarify: the only one that is bein deployed is the server side. I am not being able to deploy the front end.
client's package.json proxy:
"proxy": "http://localhost:5000"
Server package.json:
{
"name": "pictshare",
"version": "1.0.0",
"description": "Image Sharing Application",
"main": "server.js",
"scripts": {
"start": "node server.js",
"server": "nodemon server",
"build": "cd client && npm run build",
"install-client":"cd client && npm install",
"heroku-postbuild":"npm run install-client && npm run build",
"client": "npm start --prefix client",
"dev": "concurrently -n 'server,client' -c 'red, green' \"npm run server\" \"npm run client\""
},
"author": "",
"license": "MIT",
"dependencies": {
"bcryptjs": "^2.4.3",
"body-parser": "^1.19.0",
"config": "^3.3.1",
"ejs": "^3.0.2",
"express": "^4.17.1",
"express-validator": "^6.4.0",
"form-data": "^3.0.0",
"gravatar": "^1.8.0",
"gridfs-stream": "^1.1.1",
"jsonwebtoken": "^8.5.1",
"merge-images": "^1.2.0",
"method-override": "^3.0.0",
"moment": "^2.24.0",
"mongoose": "^5.9.7",
"multer": "^1.4.2",
"multer-gridfs-storage": "^4.0.2",
"node": "^13.12.0",
"nodemailer": "^6.4.6",
"path": "^0.12.7",
"react-draggable": "^4.2.0",
"request": "^2.88.2"
},
"devDependencies": {
"concurrently": "^5.1.0",
"minimist": "^1.2.5",
"nodemon": "^2.0.2"
}
}
Server.js:
const express = require('express');
const connectDB = require('./config/db');
const app = express();
const bodyParser = require('body-parser')
connectDB();
//Initialize Middleware
app.use(express.json({ extended: false }));
app.use(bodyParser.urlencoded({ extended: false }))
app.get('/', (req, res) => res.send('API Running'));
...
app.use('/api/posts', require('./routes/api/posts'));
if (process.env.NODE_ENV === 'production'){
app.use(express.static('client/build'))
}
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => console.log(`Server started on port ${PORT}`));
Mongoose:
const mongoose = require('mongoose');
const config = require('config');
const db = process.env.MONGODB_URI || config.get('mongoURI');
const connectDB = async () => {
try {
await mongoose.connect(db, {
useNewUrlParser: true,
useCreateIndex: true,
useFindAndModify: false,
useUnifiedTopology: true,
useNewUrlParser: true,
});
console.log('MongoDB Connected...');
} catch(err) {
console.error(err.message);
process.exit(1);
}
}
module.exports = connectDB;
I really appreciate any ideas or points of views!!
Thank you so much everyone!

Answer 1

Maybe you already did the job, let me point out a thing here in your code:
app.use(express.static('client/build'))
you maybe need to put like this :
const app = express();
const path = require('path');
app.use('/static', express.static(path.join(`${__dirname}/client/build`)));
then just send the file when the server is online:
app.get('/*', (req, res) => {
res.sendFile(path.join(`${__dirname}/client/build/`));
});

Answer 2

If you have .env file. Try adding this NODE_ENV = production in it.