https://www.typescriptlang.org/download
https://www.typescriptlang.org/docs/handbook/2/everyday-types.html
https://www.typescriptlang.org/docs/handbook/2/functions.html
https://www.typescriptlang.org/docs/handbook/2/objects.html
https://devhints.io/typescript
https://devsonket.com/typescript
https://www.typescriptlang.org/docs/handbook/enums.html
npm init
// npm install -g typescript
npm install --save-dev typescript
// tsc fileName.ts
npx tsc fileName.ts
npx tsc fileName.ts --watch
npx tsc --init
node fileName.js