你如何配置一个反应应用程序来使用 typescript？

Question

I am trying to learn Typescript.

I have followed these instructions and added typescript to my new app (just created a few minutes ago).

I have also followed these instructions and replaced my empty (top-level) config file with:

{
    {
        "compilerOptions": {
            "jsx": "preserve"
        }
    }
}

There is still an error that says:

tsconfig.json(2,1): error TS1136: Property assignment expected.

Does anyone know what it means or how to solve it?

Answer 1

The first instructions should work fine. Make sure you don't have an old version of create-react-app globaly installed.

You can remove it with:

npm uninstall -g create-react-app

And than create you project again with:

npx create-react-app my-app --typescript