Basic Node-TypeScript setup

• Run command npm init --yes to initialize a project.
• Run command npm i typescript -D to install typescript compiler as dev dependency.
• we can also do tsc init to initialize as a typescript project.
• The tsconfig.json file tells typescript compiler, how to compile the typescript code to javascript code.

Installing @types package

• It's required to install @types definition files in dev dependency to use with typescript compiler as many packages are written in javascript.
• Run npm i @types/node -D to install type definition of node packages.