Setup NestJs Server on Heroku

A progressive Node.js framework for building efficient, reliable and scalable server-side applications.

https://nestjs.com/

Create new NestJS projet

npm i -g @nestjs/cli
nest new project-name
npm run start
// start at http://localhost:3000/ 

Add a new Controller

// add in src/cards.controller.ts
import {Controller, Get, Req} from '@nestjs/common';
import {Request} from 'express';
@Controller('cards')
export class CardsController {
    @Get('/')
    getIndex(@Req() request: Request): string {
        return `my first controller: ${request.method}`;
    }
}
// update app.module.ts
// restart node, default port is 3000
// Visit http://localhost:3000/cards/

Deploy to Heroku (Run time Build)

Update main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  app.enableCors(); // protection
  await app.listen(process.env.PORT || '80');
}
bootstrap();

Create Procfile file

web: npm run start:prod
// this enable to start without using ts-node
// this will run prestart:prod automatically

Update Node Config

heroku config:set NPM_CONFIG_PRODUCTION=false
heroku config:set NODE_ENV=production
// this allow us to build in heroku

Deploy to Heroku via git

heroku login
git init // init git
heroku create // create app on heroku
// or
heroku git:remote -a heroku-testing
git add . // add files
git commit -m "Initial commit" // commit the files
git push heroku master // deploy 
heroku logs -n 200 // view logs

Deploy to Heroku (With source code)

This allow a slept Heroku App to wake up faster.

Update .gitIgnore

# /dist

Update package.json, add scripts

“start:dist”: “node dist/main.js”,

Update/Create Procfile

web: npm run start:dist

Build and commit files

npm run build
git add .
git commit -m "auto"
git push heroku master