Reactjs 缩小React生成文件以使其难以读取

我已经用create-React-app和make-build创建了React应用程序。我看到一些缩小了的js文件，但当我在Chrome开发工具中检查它们时，它们在“美化”模式“{}”（相同的变量名，等等）中看起来几乎没有改变。地图文件将被删除

有没有一种简单的方法来缩短变量名，例如a、b、c、d、e、f。。。例如“p，a，c，k，e，r”工具所做的

谢谢大家!

这里是构建过程的转储

d:\folder\jvgs4>npm run build

> VGS4@4.2.7 build d:\folder\jvgs4
> react-scripts build

Creating an optimized production build...
Browserslist: caniuse-lite is outdated. Please run next command `npm update`
Compiled with warnings.

...some warning messages

Search for the keywords to learn more about each warning.
To ignore, add // eslint-disable-next-line to the line before.

File sizes after gzip:

  89.42 KB (-46 B)  build\static\js\2.594b29a3.chunk.js
  54.46 KB (-42 B)  build\static\js\3.c2f4981f.chunk.js
  22.89 KB (-44 B)  build\static\js\4.e7fba51b.chunk.js
  3.31 KB (-41 B)   build\static\js\main.89abc980.chunk.js
  1.17 KB (-49 B)   build\static\css\main.70a8ce85.chunk.css
  1.14 KB (-42 B)   build\static\js\runtime-main.0bbc6d46.js

The project was built assuming it is hosted at https://api.zxlab.org/.
You can control this with the homepage field in your package.json.

The build folder is ready to be deployed.
You may serve it with a static server:

  npm install -g serve
  serve -s build

Find out more about deployment here:

......

这是我的js代码截图

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默认情况下，应在生产版本中缩小它们（网页包版本）。你能添加一个屏幕截图和编译命令吗？请注意，默认情况下，已为生产启用源映射文件。。。你确定你在看生产版本吗？我在第一条消息中添加了一些列表，你能检查一下吗？