Fix broken styles after upgrading to MUI v5 with TSS

PreviousReact Native NextMigration v3 -> v4

Last updated 6 months ago

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Fix broken styles after upgrading to MUI v5 with TSS

You upgraded to MUIv5 using tss-react but the somme styles doesn't apply the same way they uses to?

You can fix the indivudual problems but it's a very time consuming process.

Setting up emotion like that will probably fix all your issues:

import React from "react";
import ReactDOM from "react-dom/client";
import { CacheProvider } from "@emotion/react";
import { TssCacheProvider } from "tss-react";
import createCache from "@emotion/cache";
import App from "./App";

const muiCache = createCache({
    key: "mui",
    prepend: true
});

const tssCache = createCache({
    key: "tss"
});

ReactDOM.createRoot(document.getElementById("root")!).render(
    //NOTE: Don't use <StyledEngineProvider injectFirst/>
    <CacheProvider value={muiCache}>
        <TssCacheProvider value={tssCache}> 
            <App />
        </TssCacheProvider>
    </CacheProvider>
);

Why and how does it work?

In theory, when TSS and MUI uses the same emotion cache, the styles that you provide via className or classes should always take priority over MUI's default styles.

By explicitly telling MUI to use one cache and TSS to use another and by making sure the MUI styles are injected before in the <head /> (prepend: true) you ensure that TSS-generated styles always overwrite MUI's default styles.

PreviousReact Native NextMigration v3 -> v4

Last updated 6 months ago

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