vega-frontend-monorepo/apps/trading/components/async-renderer/async-renderer.tsx

import { Splash } from '@vegaprotocol/ui-toolkit';
import { ReactNode } from 'react';

interface AsyncRendererProps<T> {
  loading: boolean;
  error: Error | undefined;
  data: T;
  children: (data: T) => ReactNode;
}

// eslint-disable-next-line
export function AsyncRenderer<T = any>({
  loading,
  error,
  data,
  children,
}: AsyncRendererProps<T>) {
  if (error) {
    return <Splash>Something went wrong: {error.message}</Splash>;
  }

  if (loading) {
    return <Splash>Loading...</Splash>;
  }

  return <>{children(data)}</>;
}