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.