React 在内部处理应用程序的性能，并在每一个机会上对其进行优化。作为开发人员，我们可以做一些事情来获得应用程序的最大性能。在本章中，让我们看看一些从 react 库中获得最大性能的技术。
npm install --save-dev rollup-plugin-commonjs rollup-plugin-replace rollup-plugin-terser
使用 React devtools − React 为所有浏览器提供开发工具作为扩展。安装扩展后，浏览器的开发人员工具部分将显示一个专门用于 react 的部分。react 扩展提供的工具之一是 Profiler（React DevTool Profiler）。在将应用程序部署到生产环境之前，可以对应用程序进行分析和优化。
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