如何安装 npm install 如何在调试模式下运行 # Builds the project and opens it in a new browser tab. Auto-reloads when the project changes. npm start 如何在发布模式下构建 # Builds the project and places it into the `dist` folder. npm run build 如何进行单元测试 # Runs tests in Firefox npm test -- --firefox # Runs tests in Chrome npm t