Upgrading to v5

-import { render } from 'react-dom';
-const container = document.getElementById('app');
-render(<App tab="home" />, container);
+import { createRoot } from 'react-dom/client';
+const container = document.getElementById('app');
+const root = createRoot(container); // createRoot(container!) if you use TypeScript
+root.render(<App tab="home" />);

-import { useQuery } from 'react-query';
+import { useQuery } from '@tanstack/react-query';

- useQuery(key, fn, options)
+ useQuery({ queryKey, queryFn, ...options })
- useInfiniteQuery(key, fn, options)
+ useInfiniteQuery({ queryKey, queryFn, ...options })
- useMutation(fn, options)
+ useMutation({ mutationFn, ...options })
- useIsFetching(key, filters)
+ useIsFetching({ queryKey, ...filters })
- useIsMutating(key, filters)
+ useIsMutating({ mutationKey, ...filters })

- queryClient.isFetching(key, filters)
+ queryClient.isFetching({ queryKey, ...filters })
- queryClient.ensureQueryData(key, filters)
+ queryClient.ensureQueryData({ queryKey, ...filters })
- queryClient.getQueriesData(key, filters)
+ queryClient.getQueriesData({ queryKey, ...filters })
- queryClient.setQueriesData(key, updater, filters, options)
+ queryClient.setQueriesData({ queryKey, ...filters }, updater, options)
- queryClient.removeQueries(key, filters)
+ queryClient.removeQueries({ queryKey, ...filters })
- queryClient.resetQueries(key, filters, options)
+ queryClient.resetQueries({ queryKey, ...filters }, options)
- queryClient.cancelQueries(key, filters, options)
+ queryClient.cancelQueries({ queryKey, ...filters }, options)
- queryClient.invalidateQueries(key, filters, options)
+ queryClient.invalidateQueries({ queryKey, ...filters }, options)
- queryClient.refetchQueries(key, filters, options)
+ queryClient.refetchQueries({ queryKey, ...filters }, options)
- queryClient.fetchQuery(key, fn, options)
+ queryClient.fetchQuery({ queryKey, queryFn, ...options })
- queryClient.prefetchQuery(key, fn, options)
+ queryClient.prefetchQuery({ queryKey, queryFn, ...options })
- queryClient.fetchInfiniteQuery(key, fn, options)
+ queryClient.fetchInfiniteQuery({ queryKey, queryFn, ...options })
- queryClient.prefetchInfiniteQuery(key, fn, options)
+ queryClient.prefetchInfiniteQuery({ queryKey, queryFn, ...options })

- queryCache.find(key, filters)
+ queryCache.find({ queryKey, ...filters })
- queryCache.findAll(key, filters)
+ queryCache.findAll({ queryKey, ...filters })

-import { Admin } from 'react-admin';
+import { Admin, defaultTheme } from 'react-admin';
+import { deepmerge } from '@mui/utils';
import { dataProvider } from './dataProvider';

+const theme = deepmerge(defaultTheme, {
+   components: { 
+       MuiFormControl: { defaultProps: { fullWidth: undefined } },
+       MuiTextField: { defaultProps: { fullWidth: undefined } },
+       MuiAutocomplete: { defaultProps: { fullWidth: undefined } },
+       RaSimpleFormIterator: { defaultProps: { fullWidth: undefined } },
+       RaTranslatableInputs: { defaultProps: { fullWidth: undefined } },
+   }
+});

const MyApp = () => (
-   <Admin dataProvider={dataProvider}>
+   <Admin dataProvider={dataProvider} theme={theme}>
        ...
    </Admin>
);

const myTheme = {
    // ...
    components: {
        // ...
+       MuiFormControl: { defaultProps: { fullWidth: undefined } },
+       MuiTextField: { defaultProps: { fullWidth: undefined } },
+       MuiAutocomplete: { defaultProps: { fullWidth: undefined } },
+       RaSimpleFormIterator: { defaultProps: { fullWidth: undefined } },
+       RaTranslatableInputs: { defaultProps: { fullWidth: undefined } },
    },
<!-- TOC -->

- [Upgrading to v5](#upgrading-to-v5)
    - [IE11 Is No Longer Supported](#ie11-is-no-longer-supported)
    - [Dependencies](#dependencies)
        - [React 18](#react-18)
        - [Use @tanstack/react-query instead of react-query](#use-tanstackreact-query-instead-of-react-query)
            - [Codemod](#codemod)
        - [Minor Dependencies](#minor-dependencies)
    - [UI Changes](#ui-changes)
        - [Inputs Have Full Width By Default](#inputs-have-full-width-by-default)
        - [Links are now underlined by default](#links-are-now-underlined-by-default)
        - [Dark Theme Is Available By Default](#dark-theme-is-available-by-default)
        - [<FileInput> And <ImageInput> accept prop has changed](#fileinput-and-imageinput-accept-prop-has-changed)
    - [Data Provider](#data-provider)
        - [ra-data-graphql And ra-data-graphql-simple No Longer Return A Promise](#ra-data-graphql-and-ra-data-graphql-simple-no-longer-return-a-promise)
    - [Application Root & Layout](#application-root--layout)
        - [<Admin menu> Is No Longer Supported](#admin-menu-is-no-longer-supported)
        - [<Admin history> Prop Was Removed](#admin-history-prop-was-removed)
            - [Codemod](#codemod)
        - [<HistoryRouter> Was Removed](#historyrouter-was-removed)
        - [Custom Layout No Longer Receives Props](#custom-layout-no-longer-receives-props)
        - [Custom App Bars No Longer Receive Props](#custom-app-bars-no-longer-receive-props)
        - [Custom Menu No Longer Receive Props](#custom-menu-no-longer-receive-props)
        - [Custom Error Page No Longer Receives Title](#custom-error-page-no-longer-receives-title)
        - [Custom Catch All No Longer Receives Title](#custom-catch-all-no-longer-receives-title)
    - [List Components](#list-components)
        - [List Components Can No Longer Be Used In Standalone](#list-components-can-no-longer-be-used-in-standalone)
        - [<List hasCreate> Is No Longer Supported](#list-hascreate-is-no-longer-supported)
        - [<Datagrid rowClick> is no longer false by default](#datagrid-rowclick-is-no-longer-false-by-default)
        - [<Datagrid expand> Components No Longer Receive Any Props](#datagrid-expand-components-no-longer-receive-any-props)
        - [setFilters Is No Longer Debounced By Default](#setfilters-is-no-longer-debounced-by-default)
        - [Updates to bulkActionButtons Syntax](#updates-to-bulkactionbuttons-syntax)
        - [<PaginationLimit> Component Was Removed](#paginationlimit-component-was-removed)
        - [<DatagridBody> No Longer Provides record Prop To <DatagridRow>](#datagridbody-no-longer-provides-record-prop-to-datagridrow)
    - [Show and Edit Pages](#show-and-edit-pages)
        - [Custom Edit or Show Actions No Longer Receive Any Props](#custom-edit-or-show-actions-no-longer-receive-any-props)
        - [Inputs default ids are auto-generated](#inputs-default-ids-are-auto-generated)
        - [<SimpleFormIterator> No Longer Clones Its Buttons](#simpleformiterator-no-longer-clones-its-buttons)
        - [<SimpleFormIterator> no longer clones its children](#simpleformiterator-no-longer-clones-its-children)
        - [<FormDataConsumer> no longer passes a getSource function](#formdataconsumer-no-longer-passes-a-getsource-function)
        - [warnWhenUnsavedChanges Changes](#warnwhenunsavedchanges-changes)
        - [Inputs No Longer Require To Be Touched To Display A Validation Error](#inputs-no-longer-require-to-be-touched-to-display-a-validation-error)
        - [<InputHelperText touched> Prop Was Removed](#inputhelpertext-touched-prop-was-removed)
        - [Global Server Side Validation Error Message Must Be Passed Via The root.serverError Key](#global-server-side-validation-error-message-must-be-passed-via-the-rootservererror-key)
    - [TypeScript](#typescript)
        - [Fields Components Requires The source Prop](#fields-components-requires-the-source-prop)
        - [useRecordContext Returns undefined When No Record Is Available](#userecordcontext-returns-undefined-when-no-record-is-available)
        - [useAuthProvider Returns undefined When No authProvider Is Available](#useauthprovider-returns-undefined-when-no-authprovider-is-available)
        - [Page Contexts Are Now Types Instead of Interfaces](#page-contexts-are-now-types-instead-of-interfaces)
        - [Stronger Types For Page Contexts](#stronger-types-for-page-contexts)
        - [EditProps and CreateProps now expect a children prop](#editprops-and-createprops-now-expect-a-children-prop)
        - [BulkActionProps Type Has Been Removed](#bulkactionprops-type-has-been-removed)
        - [onError Type From ra-core Was Removed](#onerror-type-from-ra-core-was-removed)
        - [PublicFieldProps Interface Was Removed](#publicfieldprops-interface-was-removed)
        - [InjectedFieldProps Interface Was Removed](#injectedfieldprops-interface-was-removed)
        - [formClassName Prop Of FieldProps Type Was Removed](#formclassname-prop-of-fieldprops-type-was-removed)
        - [formClassName Prop Of CommonInputProps Type Was Removed](#formclassname-prop-of-commoninputprops-type-was-removed)
    - [Authentication](#authentication)
        - [useCheckAuth No Longer Accepts A disableNotification Param](#usecheckauth-no-longer-accepts-a-disablenotification-param)
        - [useLogoutIfAccessDenied No Longer Accepts A disableNotification Param](#uselogoutifaccessdenied-no-longer-accepts-a-disablenotification-param)
        - [usePermissionsOptimized Hook Was Removed](#usepermissionsoptimized-hook-was-removed)
    - [Routing](#routing)
        - [linkToRecord Helper Was Removed](#linktorecord-helper-was-removed)
        - [resolveRedirectTo Helper Was Removed](#resolveredirectto-helper-was-removed)
    - [Theming](#theming)
        - [useTheme no longer accepts a theme object as an optional argument](#usetheme-no-longer-accepts-a-theme-object-as-an-optional-argument)
        - [ToggleThemeButton no longer accepts themes as props](#togglethemebutton-no-longer-accepts-themes-as-props)
        - [<ThemeProvider theme> Is No Longer Supported](#themeprovider-theme-is-no-longer-supported)
    - [Misc](#misc)
        - [data-generator-retail commands Have Been Renamed to orders](#data-generator-retail-commands-have-been-renamed-to-orders)
        - [Support For PropTypes Was Removed](#support-for-proptypes-was-removed)
        - [Mutation Middlewares No Longer Receive The Mutation Options](#mutation-middlewares-no-longer-receive-the-mutation-options)
    - [Upgrading to v4](#upgrading-to-v4)

<!-- /TOC -->};

import { Link } from 'react-admin';

const MyComponent = () => (
-   <Link to="/foo">Foo</Link>
+   <Link to="/foo" underline="none">Foo</Link>
);

const CompanyField = () => (
-   <ReferenceField source="company_id" reference="companies" />
+   <ReferenceField source="company_id" reference="companies" sx={{
+      '& a': { textDecoration: 'none' }
+   }} />
)

-<Admin>
+<Admin darkTheme={null}>
   ...
</Admin>

// in App.js
import React from 'react';
import { Component } from 'react';
import buildGraphQLProvider from 'ra-data-graphql-simple';
import { Admin, Resource } from 'react-admin';

import { PostCreate, PostEdit, PostList } from './posts';

+ const dataProvider = buildGraphQLProvider({ clientOptions: { uri: 'http://localhost:4000' } });

const App = () => {
-    const [dataProvider, setDataProvider] = React.useState(null);
-    React.useEffect(() => {
-        buildGraphQLProvider({ clientOptions: { uri: 'http://localhost:4000' } })
-            .then(graphQlDataProvider => setDataProvider(() => graphQlDataProvider));
-    }, []);

-    if (!dataProvider) {
-        return <div>Loading < /div>;
-    }

    return (
        <Admin dataProvider={dataProvider} >
            <Resource name="Post" list={PostList} edit={PostEdit} create={PostCreate} />
        </Admin>
    );
}

export default App;

-import { Admin } from 'react-admin';
+import { Admin, Layout } from 'react-admin';
import { MyMenu } from './MyMenu';

+const MyLayout = ({ children }) => (
+    <Layout menu={MyMenu}>{children}</Layout>
+);

const App = () => (
-   <Admin menu={MyMenu} dataProvider={dataProvider}>
+   <Admin layout={MyLayout} dataProvider={dataProvider}>
        ...
    </Admin>
);

import { render, screen } from '@testing-library/react';
-import { createMemoryHistory } from 'history';
-import { CoreAdminContext } from 'react-admin';
+import { CoreAdminContext, TestMemoryRouter } from 'react-admin';
import * as React from 'react';

describe('my test suite', () => {
    it('my test', async () => {
-       const history = createMemoryHistory({ initialEntries: ['/'] });
        render(
+           <TestMemoryRouter initialEntries={['/']}>
-             <CoreAdminContext history={history}>
+             <CoreAdminContext>
                <div>My Component</div>
              </CoreAdminContext>
+           </TestMemoryRouter>
        );
        await screen.findByText('My Component');
    });
});

import { render, screen } from '@testing-library/react';
-import { createMemoryHistory } from 'history';
-import { CoreAdminContext, HistoryRouter } from 'react-admin';
+import { CoreAdminContext, TestMemoryRouter } from 'react-admin';
import * as React from 'react';

describe('my test suite', () => {
    it('my test', async () => {
-       const history = createMemoryHistory({ initialEntries: ['/'] });
        render(
-           <HistoryRouter history={history}>            
+           <TestMemoryRouter initialEntries={['/']}>
              <CoreAdminContext>
                <div>My Component</div>
              </CoreAdminContext>
-           </HistoryRouter>
+           </TestMemoryRouter>
        );
        await screen.findByText('My Component');
    });
});

+import { useHasDashboard, useDefaultTitle } from 'react-admin';

-const MyLayout = ({ children, dashboard, title }) => (
+const MyLayout = ({ children }) => {
-   const hasDashboard = !!dashboard;
+   const hasDashboard = useHasDashboard();
+   const title = useDefaultTitle();
    // ...
}

const App = () => (
    <Admin layout={MyLayout} dataProvider={dataProvider}>
        ...
    </Admin>
);

+import { useSidebarState, useDefaultTitle } from 'react-admin';

-const MyAppBar = ({ open, title }) => (
+const MyAppBar = () => {
+   const [open] = useSidebarState();
+   const title = useDefaultTitle();
    // ...
}

const MyLayout = ({ children }) => (
    <Layout appBar={MyAppBar}>{children}</Layout>
);

+import { useHasDashboard } from 'react-admin';

-const MyMenu = ({ hasDashboard }) => (
+const MyMenu = () => {
+   const hasDashboard = useHasDashboard();
    // ...
}

const MyLayout = ({ children }) => (
    <Layout menu={MyMenu}>{children}</Layout>
);

+import { useDefaultTitle } from 'react-admin';

-const MyError = ({ error, errorInfo, title }) => (
+const MyError = ({ error, errorInfo }) => {
+   const title = useDefaultTitle();
    // ...
}

const MyLayout = ({ children }) => (
    <Layout error={MyError}>{children}</Layout>
);

+import { useDefaultTitle } from 'react-admin';

-const MyCatchAll = ({ title }) => (
+const MyCatchAll = () => {
+   const title = useDefaultTitle();
    // ...
}

const App = () => (
    <Admin catchAll={MyCatchAll} dataProvider={dataProvider}>
        ...
    </Admin>
);

const MyPagination = ({
    page,
    perPage,
    total,
    setPage,
    setPerPage,
}) => {
    return (
-       <Pagination page={page} perPage={perPage} total={total} setPage={setPage} setPerPage={setPerPage} />
+       <ListContextProvider value={{ page, perPage, total, setPage, setPerPage }}>
+           <Pagination />
+       </ListContextProvider>
    );
};

-import { List } from 'react-admin';
+import { List, ListActions } from 'react-admin';

const PostList = () => (
-   <List hasCreate>
+   <List actions={<ListActions hasCreate />}>
        ...
    </List>
);

-<Datagrid>
+<Datagrid rowClick={false}>
   ...
</Datagrid>

-const PostExpandPanel = ({ record, resource, id }) => {
+const PostExpandPanel = () => {
+   const record = useRecordContext();
+   const resource = useResourceContext();
+   const id = record?.id;
    // ...
}

import { useListContext } from 'react-admin';

const MyFilter = () => {
    const { filterValues, setFilters } = useListContext();
    const handleChange = (event) => {
-       setFilters({ ...filterValues, [event.target.name]: event.target.value });
+       setFilters({ ...filterValues, [event.target.name]: event.target.value }, undefined, true);
    };

    return (
        <form>
            <input name="country" value={filterValues.country} onChange={handleChange} />
            <input name="city" value={filterValues.city} onChange={handleChange} />
            <input name="zipcode" value={filterValues.zipcode} onChange={handleChange} />
        </form>
    );
};

const PostList = () => (
-   <List bulkActionButtons={<BulkActionButtons />}>
+   <List>
-      <Datagrid>
+      <Datagrid bulkActionButtons={<BulkActionButtons />}>
           ...
       </Datagrid>
   </List>
);

-const BulkResetViewsButton = ({ resource, selectedIds }) => {
+const BulkResetViewsButton = () => {
+   const { resource, selectedIds } = useListContext();
    const notify = useNotify();
    const unselectAll = useUnselectAll(resource);
    const [updateMany, { isPending }] = useUpdateMany();

    const handleClick = () => {
        updateMany(
            resource,
            { ids: selectedIds, data: { views: 0 } },
            {
                onSuccess: () => {
                    notify('Views reset');
                    unselectAll();
                },
                onError: () => notify('Views not reset', { type: 'error' }),
            }
        );
    }
    return (
        <Button
            label="Reset views"
            disabled={isPending}
            onClick={() => updateMany()}
        >
            <VisibilityOff />
        </Button>
    );
};

const MyDatagridRow = ({
-    record,
-    id,
     onToggleItem,
     children,
     selected,
     selectable,
}: DatagridRowProps) => {
+    const record = useRecordContext();
+    return record ? (
-         <RecordContextProvider value={record}>
          <TableRow>
              </TableCell>
                  {selectable && (
                      <Checkbox
                          checked={selected}
                          onClick={event => {
                              if (onToggleItem) {
-                                      onToggleItem(id, event);
+                                      onToggleItem(record.id, event);
                              }
                          }}
                      />
                  )}
              </TableCell>
              {React.Children.map(children, field =>
                  React.isValidElement<FieldProps>(field) &&
                  field.props.source ? (
-                         <TableCell key={`${id}-${field.props.source}`}>{field}</TableCell>
+                         <TableCell key={`${record.id}-${field.props.source}`}>{field}</TableCell>
                  ) : null
              )}
          </TableRow>
-         </RecordContextProvider>
     ) : null;
};

-const MyEditActions = ({ data }) => (
+const MyEditActions = () => (
    <TopToolbar>
-       <ShowButton record={data} />
+       <ShowButton />
    </TopToolbar>
);

const PostEdit = () => (
    <Edit actions={<MyEditActions />} {...props}>
        ...
    </Edit>
);

- import { Button, ButtonProps } from 'react-admin';
+ import { Button, ButtonProps, useSimpleFormIterator } from 'react-admin';

export const MyAddButton = (props: ButtonProps) => {
+    const { add } = useSimpleFormIterator();
-    return <Button {...props}>Add</Button>;
+    return <Button {...props} onClick={() => add()}>Add</Button>;
}

- import { Button, ButtonProps } from 'react-admin';
+ import { Button, ButtonProps, useSimpleFormIteratorItem } from 'react-admin';

export const MyRemoveButton = (props: ButtonProps) => {
+    const { remove } = useSimpleFormIteratorItem();
-    return <Button {...props}>Add</Button>;
+    return <Button {...props} onClick={() => remove()}>Add</Button>;
}

<ArrayInput disabled={someCondition}>
   <SimpleFormIterator>
-      <TextInput source="lastName" />
-      <TextInput source="firstName" />
+      <TextInput source="lastName" disabled={someCondition} />
+      <TextInput source="firstName" disabled={someCondition} />
   </SimpleFormIterator>
</ArrayInput>

import { Edit, SimpleForm, TextInput, ArrayInput, SelectInput, FormDataConsumer } from 'react-admin';

const PostEdit = () => (
    <Edit>
        <SimpleForm>
            <ArrayInput source="authors">
                <SimpleFormIterator>
                    <TextInput source="name" />
                    <FormDataConsumer>
                        {({
                            formData, // The whole form data
                            scopedFormData, // The data for this item of the ArrayInput
-                           getSource,
                        }) =>
                            scopedFormData && getSource && scopedFormData.name ? (
                                <SelectInput
-                                    source={getSource('role')}
+                                    source="role" // Will translate to "authors[0].role"
                                    choices={[{ id: 1, name: 'Head Writer' }, { id: 2, name: 'Co-Writer' }]}
                                />
                            ) : null
                        }
                    </FormDataConsumer>
                </SimpleFormIterator>
            </ArrayInput>
        </SimpleForm>
    </Edit>
);

import * as React from 'react';
import {
    useRegisterMutationMiddleware,
    CreateParams,
-    MutateOptions,
    CreateMutationFunction
} from 'react-admin';

const MyComponent = () => {
    const createMiddleware = async (
        resource: string,
        params: CreateParams,
-        options: MutateOptions,
        next: CreateMutationFunction
    ) => {
        // Do something before the mutation

        // Call the next middleware
-        await next(resource, params, options);
+        await next(resource, params);

        // Do something after the mutation
    }
    const memoizedMiddleWare = React.useCallback(createMiddleware, []);
    useRegisterMutationMiddleware(memoizedMiddleWare);
    // ...
}

import * as React from 'react';
import { Admin, Resource } from 'react-admin';
import { createRoot } from 'react-dom/client';
-import { BrowserRouter } from 'react-router-dom';
+import { createBrowserRouter, RouterProvider } from 'react-router-dom';

import dataProvider from './dataProvider';
import posts from './posts';

const App = () => (
-    <BrowserRouter>
        <Admin dataProvider={dataProvider}>
            <Resource name="posts" {...posts} />
        </Admin>
-    </BrowserRouter>
);

+const router = createBrowserRouter([{ path: '*', element: <App /> }]);

const container = document.getElementById('root');
const root = createRoot(container);

root.render(
    <React.StrictMode>
-        <App />
+        <RouterProvider router={router} />
    </React.StrictMode>
);

{
    "body": {
        "errors": {
+           "root": { "serverError": "Some of the provided values are not valid. Please fix them and retry." },
            "title": "An article with this title already exists. The title must be unique.",
            "date": "The date is required",
            "tags": { "message": "The tag 'agrriculture' doesn't exist" },
        }
    }
}

{
-   "message": "Some of the provided values are not valid. Please fix them and retry.",
    "body": {
        "errors": {
+           "root": { "serverError": "Some of the provided values are not valid. Please fix them and retry." },
            "title": "An article with this title already exists. The title must be unique.",
            "date": "The date is required",
            "tags": { "message": "The tag 'agrriculture' doesn't exist" },
        }
    }
}

-<FileInput source="attachments" accept="application/pdf">
+<FileInput source="attachments" accept={{ 'application/pdf': ['.pdf'] }}>

import { FieldProps, useRecordContext } from 'react-admin';

-const AvatarField = (props: FieldProps) => {
+const AvatarField = (props: Omit<FieldProps, 'source'>) => {
    const record = useRecordContext();
    if (!record) return null;
    return (
        <Avatar
            src={record.avatar}
            alt={`${record.first_name} ${record.last_name}`}
            {...props}
        />
    );
}

const MyComponent = () => {
    const record = useRecordContext();
+   if (!record) return null;
    return (
        <div>
            <h1>{record.title}</h1>
            <p>{record.body}</p>
        </div>
    );
};

const useGetPermissions = (): GetPermissions => {
    const authProvider = useAuthProvider();
    const getPermissions = useCallback(
        (params: any = {}) =>
+           authProvider ?
                authProvider
                      .getPermissions(params)
                      .then(result => result ?? null)
+               : Promise.resolve([]),
        [authProvider]
    );
    return getPermissions;
};

import { ListControllerResult } from 'react-admin';

-interface MyListControllerResult extends ListControllerResult {
+type MyListControllerResult = ListControllerResult & {
    customProp: string;
};

const MyCustomList = () => {
    const { data, error, isPending } = useListContext();
    if (isPending) return <Loading />;
+   if (error) return <Error />;
    return (
        <ul>
            {data.map(record => (
                <li key={record.id}>{record.name}</li>
            ))}
        </ul>
    );
};

-const ReviewEdit = ({ id }: EditProps) => (
+const ReviewEdit = ({ id }: Omit<EditProps, 'children'>) => (
   <Edit id={id}>
        <SimpleForm>
            ...

const myThemeObject = {
    ...
    palette: {
        type: "light",
        ...
    }
    ...
};

- const [themeObject, setTheme] = useTheme(myThemeObject)
+ const [themePreference, setTheme] = useTheme(myThemeObject.palette.type)
// Alternatively
+ const [themePreference, setTheme] = const useTheme("light")
// Alternatively, since you usually don't need a default value for the theme preference
+ const [themePreference, setTheme] = useTheme();

-import { Admin, Layout, AppBar, ToggleThemeButton } from 'react-admin';
+import { Admin } from 'react-admin';
import { dataProvider } from './dataProvider';
import { lightTheme, darkTheme } from './themes';

-const MyAppBar = () => <AppBar toolbar={<ToggleThemeButton lightTheme={lightTheme} darkTheme={darkTheme} />} />
-const MyLayout = (props) => <Layout {...props} appBar={<MyAppBar />} />;

const App = () => (
-   <Admin dataProvider={dataProvider} layout={MyLayout}>
+   <Admin dataProvider={dataProvider} lightTheme={lightTheme} darkTheme={darkTheme}>
       ...
    </Admin>
);

-import { ThemeProvider } from 'react-admin';
+import { ThemeProvider, ThemesContext } from 'react-admin';
 
 export const ThemeWrapper = ({ children }) => {
     return (
-        <ThemeProvider
-            theme={{
-                palette: { mode: 'dark' },
+        <ThemesContext.Provider
+            value={{
+                darkTheme: { palette: { mode: 'dark' } },
+                lightTheme: { palette: { mode: 'light' } },
             }}
         >
-            {children}
-        </ThemeProvider>
+            <ThemeProvider>{children}</ThemeProvider>
+        </ThemesContext.Provider>
     );
 };