vendure/packages/dev-server/test-plugins/reviews/dashboard/index.tsx

import { Button, defineDashboardExtension } from '@vendure/dashboard';

import { CustomWidget } from './custom-widget';
import { reviewDetail } from './review-detail';
import { reviewList } from './review-list';

export default defineDashboardExtension({
    routes: [reviewList, reviewDetail],
    widgets: [
        {
            id: 'custom-widget',
            name: 'Custom Widget',
            component: CustomWidget,
            defaultSize: { w: 3, h: 3 },
        },
    ],
    actionBarItems: [
        {
            label: 'Custom Action Bar Item',
            component: props => {
                return <Button type="button" onClick={() => {
                    console.log('Clicked custom action bar item');
                }}>Test Button</Button>;
            },
            locationId: 'product-detail',
        },
    ],
    pageBlocks: [
        {
            id: 'my-block',
            component: ({ context }) => {
                return <div>Here is my custom block!</div>;
            },
            title: 'My Custom Block',
            location: {
                pageId: 'product-detail',
                column: 'side',
                position: { blockId: 'main-form', order: 'after' },
            },
        },
    ],
});