npm install: Installs dependencies
npm run start: Runs serve or dev, depending on NODE_ENV value. Defaults to dev server
npm run dev: Run a development, HMR server
npm run serve: Run a production-like server
npm run build: Production-ready build
npm run lint: Pass TypeScript files using TSLint
npm run test: Run Jest and preact-render-spy for your tests
For detailed explanation on how things work, checkout the CLI Readme.