Node.js

Deploy a Node.js application that connects to PostgreSQL using DB migrations.

Assumed Structure

• Entry point: node/index.js, started via npm run start
• Migrations: managed under node/migrations, run via npm run migrate
• DATABASE_URL is assembled inside scripts from the individual environment variables

Deploy Commands

All commands run from the repository root.

package.json Scripts

Define the following scripts in package.json:

{
  "scripts": {
    "start": "node node/index.js",
    "migrate": "node node/migrations/migrate.js",
    "migrate:down": "node node/migrations/migrate-down.js"
  }
}

Environment Variables

The PORT environment variable is set by default. Your app should use this value as the listen port.

When a database is selected during app creation, the following variables are also automatically set:

• DB_HOST, DB_PORT, DB_NAME, DB_USER, DB_PASSWORD
• DATABASE_URL — full connection string

Use these to build the connection in your migration scripts and application code.

Starter App

See the starter app for reference: kamui-project/node-starter

Next Steps

• Databases