quote-generator-with-typescript https://ahmed0saber.github.io/quote-generator-with-typescript/ how to create typescript app npm install typescript --save-dev npx tsc npx tsc --init open tsconfig.json and make sure these lines exist { "include": ["src"], "compilerOptions": { "outDir": "./build" } } create empty build folder create src folder with index.ts add this to package.json "scripts": { "start": "tsc --watch" } run this command npm start