Use npx create-react-app App --template typescript to build the project, tsconfig.json file has an error

[HChange]

[HChange]

Used yarn eject

[robin-xyzt-ai]

Sounds like a duplicate of #10103

[ChristianIvicevic]

This is not an error, your VS Code probably hasn't picked up on the new schema for tsconfig.json as react-jsx and react-jsxdev are newly introduced JSX factories starting with Typescript 4.1 and thus valid values in this context. For me personally VS Code doesn't show any error and even offers them during code completion.

[srymh]

It's resolved in the following way:

1. "Ctrl + Shift + P" or Click Typescript version at the bottom right of the window.
2. TypeScript: Select TypeScript Version
3. Use Workspace Version... 4.1.2

[dylanesque]

It's resolved in the following way:

1. "Ctrl + Shift + P" or Click Typescript version at the bottom right of the window.
2. TypeScript: Select TypeScript Version
3. Use Workspace Version... 4.1.2

This doesn't work for me

[raikusy]

For anyone the above solution doesn't work. Try this - #10129 (comment)

Basically you need to install this extension in VSCode - https://marketplace.visualstudio.com/items?itemName=ms-vscode.vscode-typescript-next