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Error: 'Reaccionar' debe estar dentro del alcance cuando se usa JSX

Al hacer un proyecto de prueba con React en debian 10 con VScode en Windows 8.1, al usar el comando yarn start en la carpeta del proyecto, aparece un error:

 ./src/App.js Line 6: 'React' must be in scope when using JSX react/react-in-jsx-scope Line 7: 'React' must be in scope when using JSX react/react-in-jsx-scope Line 8: 'React' must be in scope when using JSX react/react-in-jsx-scope Line 9: 'React' must be in scope when using JSX react/react-in-jsx-scope Line 10: 'React' must be in scope when using JSX react/react-in-jsx-scope Line 12: 'React' must be in scope when using JSX react/react-in-jsx-scope

soluciones con import React from 'react'; o "react/react-in-jsx-scope": "off" funcionó. ¿Qué más podría ser el problema?

about 3 years ago · Juan Pablo Isaza
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