components/toolbar: types is a types-only file

src/components/toolbar/Toolbar.tsx

@@ -5,7 +5,7 @@ import React from 'react';
 import { FocusScope } from 'react-aria';
 import { useToolbar } from './aria';
 import { ToolbarStateContext, useToolbarState } from './state';
-import { AriaToolbarProps } from './types';
+import type { AriaToolbarProps } from './types';
 
 type ToolbarProps = Pick<
     AriaToolbarProps,

src/components/toolbar/aria.ts

@@ -11,7 +11,7 @@ import {
 } from 'react';
 import { FocusScope, mergeProps, useFocusManager } from 'react-aria';
 import { ToolbarStateContext } from './state';
-import { AriaToolbarProps } from './types';
+import type { AriaToolbarProps } from './types';
 
 // for doc comment link
 FocusScope;

src/components/toolbar/state.ts

@@ -2,7 +2,7 @@
 // Copyright (c) 2022 The Pybricks Authors
 
 import { createContext, useState } from 'react';
-import { ToolbarProps } from './types';
+import type { ToolbarProps } from './types';
 
 export type ToolbarState = Readonly<{
     /** The DOM id of the most recently focused item. */