Node JS and TypeOrm Setup and Deployment Prerequisites

1. Creating the Bolierplate code for TypeORM

• install typeorm on local npm install -g typeorm
• execute the command to generate the typeorm basecode
  typeorm --name <projectname> --database <database>
• after boilerplate codes have been generated, execute npm install to download all dependencies for node
• install express framework using the following command npm install express --save
• install body-parder using the following command npm install body-parser --save
• install nodemon for watching code changes npm install -g nodemon
• add the following scripts on package.json "snm": "nodemon src/index.ts"

2. Connecting to MongoDB Atlas

• Create a User in MongoDB Atlas
• Build a New Cluster and after successful cluster creation, go to connect and copy the connection string provided. ex string: mongodb+srv://sa:<password>@cl0sh0uf.mongodb.net/test?retryWrites=true&w=majority
• make sure you have a database user.
• check network access and eddit your whitelist entry to global ip 0.0.0.0/0
• copy the connection string on your ormconfig.json

  "type": "mongodb",
  "url": "mongodb+srv://sa:sa@cluster0-sh0uf.mongodb.net/test?retryWrites=true&w=majority",
  "database": "test",
  "useUnifiedTopology": true,
  "synchronize": true,
  

3. Deploying the NodeJS App

• install pm2 to for node js deployment npm install -g pm2
• install babel-cli for building the typeorm applications npm install -g babel-cli
• add the following scripts on package.json

"build-ts": "tsc -p ."
"build": "npm run build-ts && npm run build-babel"
"build-babel": "babel -d ./dist ./src -s"
"pm2-start":  "pm2 start build/index.js --watch"

• run npm run build-babel to produce a build file and run pm2-start to deploy the app

Repo for sample Typeorm code: https://github.com/SeijiV13/xurpas-typeorm