refactor: fix types to be matched with docs

Author: koba04

src/ReplaceTransition.tsx

@@ -92,7 +92,6 @@ class ReplaceTransition extends React.Component<Props> {
     ] = React.Children.toArray(children);
 
     return (
-      // @ts-expect-error FIXME: This JSX tag's 'children' prop expects type 'ReactNode[] & ReactNode' which requires multiple children, but only a single child was provided.ts(2745)
       <TransitionGroup {...props}>
         {inProp
           ? React.cloneElement(first, {

src/Transition.tsx

@@ -1,6 +1,6 @@
 import PropTypes from 'prop-types';
 import React from 'react';
-import type { RefObject, ReactChildren, ReactNode } from 'react';
+import type { RefObject, ReactNode } from 'react';
 import ReactDOM from 'react-dom';
 
 import config from './config';
@@ -22,9 +22,7 @@ export type TransitionState =
 
 export type Props = {
   nodeRef?: RefObject<HTMLElement>;
-  children:
-    | ReactChildren
-    | ((state: TransitionState, childProps: any) => ReactNode);
+  children: (state: TransitionState, childProps: any) => ReactNode;
   in: boolean;
   mountOnEnter: boolean;
   unmountOnExit: boolean;

src/TransitionGroup.tsx

@@ -20,7 +20,7 @@ const defaultProps = {
 
 type Props = {
   component: any;
-  children: ReactNode[];
+  children: any;
   appear: boolean;
   enter: boolean;
   exit: boolean;