Learning Typescript

To get started

Run

npm i
tsc -w 
npm start 

tsc -w :To run typescript compilation in watch mode to rebuild the JS

Using decorators for validation

Decorators are used for meta programming to add extra configuration extra logic

https://github.com/typestack/class-validator#validation-errors

https://docs.nestjs.com/techniques/validation

https://www.typescriptlang.org/docs/handbook/decorators.html