How to use hooks in custom plugins - docusaurus

Question

I am trying to write a custom plugin for our Docusaurus site. I am able to wire up the custom component, but I cannot use hooks like useState or useEffect. The page crashes saying I'm using an invalid React hook.
I know its possible to use hooks because I see other plugins doing it so I'm sure its a syntax problem somewhere.
Here's my code:
index.ts
import path from 'path'
module.exports = function () {
return {
name: 'docusaurus-theme-myorg-technology',
getThemePath() {
return path.resolve(__dirname, './theme')
}
};
};
theme/index.tsx
import React from 'react'
import {CustomTOC} from './CustomTOC'
const WrappedTOC = (props: any) => {
return (
<CustomTOC {...props} />
);
};
export default WrappedTOC;
theme/CustomTOC.tsx
import React, { useState } from 'react';
import TOC from '#theme-init/TOC';
export default function CustomTOC(props: any) {
//const [tags, setTags] = useState<any[]>([]); <-- if I comment this out the page crashes
return (
<>
<TOC {...props} />
Hello world
</>
);
}

Answer 1

"Invalid hooks call" link to a doc page, that you should read carefully.
Most likely: you are using a different version of React for your component lib that the one Docusaurus uses internally, and it leads to the React lib being used twice at runtime. Make sure the final project will only include one React version. You can for example use the exact same version that the one Docusaurus uses