6

I'm adding typescript to my react-native app,

in App.tsx

I'm getting this error on Cannot find name React$Node on 

const App: () => React$Node = () => {
 ...
}
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  • please accept the appropriate answer to your question. Commented Feb 5, 2021 at 4:37

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I'm unsure of the syntax you're using, and not sure where React$Node comes from. From my experience, the correct typing and syntax should be React.ReactNode or React.ReactElement. For example:

import React from 'react'

const App = (): React.ReactElement => { 

  return (
    // component code
  )
}

As for the difference between ReactNode and ReactElement (because I wasn't entirely sure), I found ford04's answer useful - quoted here:

ReactElement and JSX.Element are the result of invoking React.createElement directly or via JSX transpilation. It is an object with type, props and key. [JSX.Element]

ReactNode is used as return type for render() in class components. It also is the default type for children attribute with [PropsWithChildren]

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1 Comment

I've just looked up React$Node - it's a Flow type. So the corresponding type for TypeScript will be ReactNode (or React.ReactNode if you don't import it). Make sure you install @types/react and @types/react-native.

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