Deploy NestJS Projects in Seconds

How to deploy NestJS? Taking enterprise-grade, TypeScript-based modern Node.js framework NestJS projects live can sometimes be challenging due to compilation (build) steps. However, with Flyway, NestJS hosting and deployment processes are completely automated.

Unlike platforms such as Heroku, Vercel, or Render, Flyway analyzes your project via GitHub, handles the TypeScript build process for you, and takes it live with SSL in seconds under the zero-config principle.

Read Time: 7 Minutes

Lang: TypeScript / NestJS

Recommended DB: PostgreSQL

1. Prerequisites

Before taking your NestJS project live on Flyway, make sure you meet the following requirements:

✅ Your project must be hosted on a GitHub, GitLab, or Bitbucket repository.
✅ A standard NestJS package.json file must be present in the root directory.
✅ You must have logged into your Flyway account and completed the GitHub integration.

2. Specifying Node.js Version (Engines)

NestJS heavily uses Typescript and modern Node.js features. It is highly recommended to specify your version to work compatibly with your local Node.js version in production. You can do this in the engines field in your package.json.

package.json (Example Node 18+ Spec)

{
  "name": "my-nest-project",
  "engines": {
    "node": "18.x" // Flyway will use the image for this version
  }
}

3. Start Script and TypeScript Build Steps

If Flyway sees a build script in your repository, it will automatically run it first. NestJS projects already come with a "build": "nest build" script by default. This step is flawless.

However, Flyway (and all cloud PaaS systems) looks for the start command by default to start the application. In a standard NestJS project, the start command is nest start, which is not suitable for production.

💡

Critical Update

You must update the start command in your package.json file to point to the production build folder (usually dist).

package.json (Adjusted for Production)

"scripts": {
  "build": "nest build", // 1. Flyway runs this first
  "start": "node dist/main", // 2. ATTENTION: Update this! Flyway triggers this in prod
  "start:dev": "nest start --watch"
}

4. Port Listening Rules (main.ts)

The most common reason NestJS projects don't run in a cloud environment is incorrect port configuration in main.ts. Your application must read the randomly assigned dynamic port and accept connections via the 0.0.0.0 host address.

Incorrect Usage (Hardcoded)

Do not bind your app to a static port (e.g., 3000).

await app.listen(3000); // DOES NOT WORK on Flyway!

✓

Correct Usage (Dynamic Port)

Read the process.env.PORT variable and listen to 0.0.0.0.

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  // We listen to the port provided by Flyway
  await app.listen(process.env.PORT || 3000, '0.0.0.0');
}
bootstrap();

5. Environment Variables (.env) Management

Instead of embedding all the environment variables (TypeORM database URL, JWT secret, etc.) you use with NestJS's @nestjs/config package into your code, you can safely provide them through Flyway.

Manage your environment variables safely via the Flyway panel.

6. Log Viewing and Debugging (Crash Loop)

If your application has been successfully compiled (built) and deployed but keeps restarting (Crash Loop), you should monitor the live logs to see the source of the error:

Click on the Logs tab from your project panel.
Here you can see NestJS's famous yellow-green logs and TypeORM database connection errors (if any) in real-time.

7. Troubleshooting and FAQ

Frequently Asked Questions

How to deploy NestJS?

Create a new project on Flyway, select your GitHub repository. Flyway handles the TypeScript build process itself and instantly brings your project up with an SSL certificate.

Troubleshooting Table (Errors and Solutions)

Error Message / Symptom	Possible Cause	Solution
Web process failed to bind to $PORT	You are trying to bind to a static port (e.g., 3000) in `main.ts`.	Update the code to `app.listen(process.env.PORT \|\| 3000, '0.0.0.0')`.
App is running but I can't access it	Host is not specified as `0.0.0.0`. App is closed to external traffic.	Make sure to add `'0.0.0.0'` as the second parameter to `listen`.
TypeORM / Prisma connection error	Your database URL is incorrect or not added via the Environment Variables tab.	Check if you correctly added the `DATABASE_URL` in the Flyway panel.

Coming Soon

Node.js Environment Variables (.env) →

Safely manage sensitive data and TypeORM passwords within NestJS.

Deploy Express Projects →

Bring up your more minimal Express.js projects on Flyway.

You're All Set! 🚀

After these settings, simply push your code. Flyway automatically performs the compilation and takes you live on your Custom Domain in seconds.