EuiGlobalToastListItem code review fixes

src/components/common.ts

@@ -14,7 +14,6 @@ export type RefCallback<Element extends HTMLElement> = (
 
 // utility types:
 
-export type Filter<T, U> = T extends U ? T : never; // Remove types from T that are not assignable to U
 export type Omit<T, K> = Pick<T, Exclude<keyof T, K>>;
 
 /**

src/components/toast/global_toast_list_item.tsx

@@ -1,31 +1,28 @@
-import {
-  cloneElement,
-  FunctionComponent,
-  ReactElement,
-  ReactNode,
-  Children,
-} from 'react';
+import { cloneElement, FunctionComponent, ReactElement } from 'react';
 import classNames from 'classnames';
-import { CommonProps, Filter } from '../common';
+import { CommonProps } from '../common';
 
 export interface EuiGlobalToastListItemProps {
   isDismissed?: boolean;
-  children?: Filter<{ props: ReactNode }, ReactNode>;
+  children?: ReactElement;
 }
 
 export const EuiGlobalToastListItem: FunctionComponent<
   CommonProps & EuiGlobalToastListItemProps
 > = ({ children, isDismissed }) => {
+  if (!children) {
+    return null;
+  }
   const classes = classNames(
     'euiGlobalToastListItem',
-    children!.props.className,
+    children.props.className,
     {
       'euiGlobalToastListItem-isDismissed': isDismissed,
     }
   );
-  const child = Children.only(children);
-  return cloneElement(child as ReactElement<any>, {
-    ...children!.props,
+
+  return cloneElement(children, {
+    ...children.props,
     ...{ className: classes },
   });
 };

src/components/toast/index.d.ts

@@ -1,6 +1,6 @@
-export {
-  EuiGlobalToastListItemProps,
-  EuiGlobalToastListItem,
+import {
+  EuiGlobalToastListItemProps as ToastListItemProps,
+  EuiGlobalToastListItem as ToastListItem,
 } from './global_toast_list_item';
 import { CommonProps } from '../common';
 import { IconType } from '../icon';
@@ -28,6 +28,8 @@ declare module '@elastic/eui' {
   }
 
   export const EuiToast: FunctionComponent<EuiToastProps>;
+  export interface EuiGlobalToastListItem extends ToastListItemProps {}
+  export const EuiGlobalToastListItem: typeof ToastListItem;
 
   /**
    * EuiGlobalToastList type def