PORT error when deploying a nodejs application to Heroku - node.js

Question

I am trying to deploy my nodejs app on heroku. The build is successful however I am getting these errors:
2020-01-20T23:39:44.000000+00:00 app[api]: Build succeeded
2020-01-20T23:39:46.924595+00:00 heroku[web.1]: Starting process with command `npm install --only=dev && npm run client-install && npm run dev`
2020-01-20T23:39:50.661227+00:00 app[web.1]: npm WARN jackpot#1.0.0 No repository field.
2020-01-20T23:39:50.661677+00:00 app[web.1]:
2020-01-20T23:39:50.704813+00:00 app[web.1]: audited 530 packages in 1.693s
2020-01-20T23:39:50.833913+00:00 app[web.1]:
2020-01-20T23:39:50.833917+00:00 app[web.1]: 4 packages are looking for funding
2020-01-20T23:39:50.833919+00:00 app[web.1]: run `npm fund` for details
2020-01-20T23:39:50.833921+00:00 app[web.1]:
2020-01-20T23:39:50.834704+00:00 app[web.1]: found 0 vulnerabilities
2020-01-20T23:39:50.834706+00:00 app[web.1]:
2020-01-20T23:39:51.165784+00:00 app[web.1]:
2020-01-20T23:39:51.165819+00:00 app[web.1]: > jackpot#1.0.0 client-install /app
2020-01-20T23:39:51.165823+00:00 app[web.1]: > npm install --prefix client
2020-01-20T23:39:51.165825+00:00 app[web.1]:
2020-01-20T23:40:43.615827+00:00 app[web.1]:
2020-01-20T23:40:43.615852+00:00 app[web.1]: > core-js#2.6.11 postinstall /app/client/node_modules/core-js
2020-01-20T23:40:43.615854+00:00 app[web.1]: > node -e "try{require('./postinstall')}catch(e){}"
2020-01-20T23:40:43.615856+00:00 app[web.1]:
2020-01-20T23:40:43.691296+00:00 app[web.1]: Thank you for using core-js ( https://github.com/zloirock/core-js ) for
polyfilling JavaScript standard library!
2020-01-20T23:40:43.691299+00:00 app[web.1]:
2020-01-20T23:40:43.691302+00:00 app[web.1]: The project needs your help! Please consider supporting of core-js on Open Collective or Patreon:
2020-01-20T23:40:43.691305+00:00 app[web.1]: > https://opencollective.com/core-js
2020-01-20T23:40:43.691307+00:00 app[web.1]: > https://www.patreon.com/zloirock
2020-01-20T23:40:43.691309+00:00 app[web.1]:
2020-01-20T23:40:43.691311+00:00 app[web.1]: Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)
2020-01-20T23:40:43.691313+00:00 app[web.1]:
2020-01-20T23:40:43.705353+00:00 app[web.1]:
2020-01-20T23:40:43.705360+00:00 app[web.1]: > core-js-pure#3.6.4 postinstall /app/client/node_modules/core-js-pure
2020-01-20T23:40:43.705365+00:00 app[web.1]: > node -e "try{require('./postinstall')}catch(e){}"
2020-01-20T23:40:43.705368+00:00 app[web.1]:
2020-01-20T23:40:44.193688+00:00 app[web.1]:
2020-01-20T23:40:44.193702+00:00 app[web.1]: > core-js#3.6.4 postinstall /app/client/node_modules/react-app-polyfill/node_modules/core-js
2020-01-20T23:40:44.193707+00:00 app[web.1]: > node -e "try{require('./postinstall')}catch(e){}"
2020-01-20T23:40:44.193709+00:00 app[web.1]:
2020-01-20T23:40:47.195666+00:00 heroku[web.1]: State changed from starting to crashed
2020-01-20T23:40:47.199923+00:00 heroku[web.1]: State changed from crashed to starting
2020-01-20T23:40:47.087841+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2020-01-20T23:40:47.088001+00:00 heroku[web.1]: Stopping process with SIGKILL
2020-01-20T23:40:47.175500+00:00 heroku[web.1]: Process exited with status 137
I did some research online and found that it is related to these lines: server.js:
const PORT = process.env.PORT || 7000;
app.listen(PORT, () => console.log(`Server up and running on port ${PORT} !`));
Only problem is that I have the client code doing API calls to the server, which requires me to a proxy.
server.js:
const express = require("express");
const mongoose = require("mongoose");
const bodyParser = require("body-parser");
const passport = require("passport");
const users = require("./routes/api/users");
const app = express();
// Bodyparser middleware
app.use(
bodyParser.urlencoded({
extended: false
})
);
app.use(bodyParser.json());
// DB Config
const db = require("./config/keys").mongoURI;
// Connect to MongoDB
mongoose
.connect(
db,
{ useNewUrlParser: true,
useUnifiedTopology: true
}
)
.then(() => console.log("MongoDB successfully connected"))
.catch(err => console.log(err));
// Passport middleware
app.use(passport.initialize());
// Passport config
require("./config/passport")(passport);
// Routes
app.use("/api/users", users);
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => console.log(`Server up and running on port ${PORT} !`));
server package.json:
{
"name": "jackpot",
"version": "1.0.0",
"description": "JackPot Application",
"main": "server.js",
"scripts": {
"client-install": "npm install --prefix client",
"start": "node server.js",
"server": "nodemon server.js",
"client": "npm start --prefix client",
"dev": "concurrently \"npm run server\" \"npm run client\"",
"prod": "NODE_ENV=production concurrently \"npm run server\" \"npm run client\""
},
"author": "",
"license": "MIT",
"dependencies": {
"axios": "^0.19.1",
"bcryptjs": "^2.4.3",
"body-parser": "^1.18.3",
"concurrently": "^4.0.1",
"express": "^4.16.4",
"fs": "0.0.1-security",
"is-empty": "^1.2.0",
"jquery": "^3.4.1",
"jsonwebtoken": "^8.3.0",
"mongoose": "^5.3.11",
"nodemailer": "^6.4.2",
"particles-bg": "^2.4.7",
"passport": "^0.4.0",
"passport-jwt": "^4.0.0",
"readline": "^1.3.0",
"sweetalert2": "^9.5.4",
"validator": "^10.9.0",
"ws": "^7.2.1"
}
}
/client/package.json:
{
"name": "client",
"version": "0.1.0",
"private": true,
"dependencies": {
"axios": "^0.19.1",
"classnames": "^2.2.6",
"jquery": "^3.4.1",
"jwt-decode": "^2.2.0",
"particles-bg": "^2.4.7",
"react": "^16.6.3",
"react-chat-window": "^1.2.1",
"react-dom": "^16.6.3",
"react-redux": "^7.1.3",
"react-router-dom": "^5.1.2",
"react-scripts": "3.2.0",
"redux": "^4.0.1",
"redux-thunk": "^2.3.0"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"proxy": "http://localhost:5000",
"eslintConfig": {
"extends": "react-app"
},
"browserslist": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all"
]
}
I hope one of you guys can help me, I have been scratching my head for hours.