Higher order components enhance generic components

I'm facing an issue where I want to assign a generic type to my React component props, but the type information gets lost when I wrap it in a higher order component (material-ui). How can I ensure that the required information is passed along?

type Props<T> = {
  data: Array<T>;
}

class MyComponent<T> extends React.Component<Props<T>> {

const StyledComponent = withStyles(styles)(MyComponent)

When using <StyledComponent<myType, I encounter an error because it doesn't recognize the generic.

Answer №1

It's a good idea to add annotations to your new component in this way:

const StyledComponent: <T>(props: OuterProps<T>) => JSX.Element = withStyles(styles)(MyComponent);

Keep in mind that you may need to distinguish between OuterProps and InnerProps, as shown in the example below that I created for your reference:

https://stackblitz.com/edit/hoc-generics

I hope this information is helpful!

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