问无法使用JSX，除非在我启动纱线时提供了“--jsx”标志
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Stack Overflow用户

提问于 2020-12-08 10:31:04

回答 2查看 2.1K关注 0票数 1

我做了

我做了纱线的开始，http://localhost:3000/很成功，但是出现了很多问题

$ yarn start也是npm run start纱线运行版本1.22.4$react脚本启动

The following changes are being made to your tsconfig.json file:
  - compilerOptions.jsx must be react-jsx (to support the new JSX transform in React 17)

i ｢wds｣: Project is running at http://192.168.56.1/
i ｢wds｣: webpack output is served from
i ｢wds｣: Content not from webpack is served from C:\Users\taiga\Github\Typescript\eslint-app\example\public
i ｢wds｣: 404s will fallback to /
Starting the development server...
Compiled successfully!

You can now view example in the browser.

  Local:            http://localhost:3000
  On Your Network:  http://192.168.56.1:3000

Note that the development build is not optimized.
To create a production build, use npm run build.

错误

Cannot use JSX unless the '--jsx' flag is provided
Module './App' was resolved to 'c:/Users/taiga/Github/Typescript/eslint-app/example/src/App.tsx', but '--jsx' is not set.
Argument for '--jsx' option must be: 'preserve', 'react-native', 'react'.

我试着

我试过这个

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