react 组件按需加载问题解决
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- [1 错误信息](#1 错误信息)
- [2 解决方案](#2 解决方案)
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1 错误信息
react 项目在创建 router 路由时,使用 lazy 懒加载时,导致以下报错:
- The above error occurred in the <Route.Provider> component:
- Uncaught Error: A component suspended while responding to synchronous input. This will cause the UI to be replaced with a loading indicator. To fix, updates that suspend should be wrapped with startTransition.
2 解决方案
懒加载模式的组件写法,外面需要套一层 Loading 的提示加载组件。
javascript
import React, { lazy } from 'react'
import { Navigate } from 'react-router-dom'
// 按需引入
const Home = lazy(() => import('@/views/Home'))
const About = lazy(() => import('@/views/About'))
const User = lazy(() => import('@/views/User'))
// 按需引入导致报错:懒加载模式的组件写法,外面需要套一层 Loading 的提示加载组件
const withLoadingComponent = (comp: JSX.Element) => (
<React.Suspense fallback={<>Loading</>}>
{comp}
</React.Suspense>
)
const routes = [
{
path: '/',
element: <Navigate to='/home' />
},
{
path: '/home',
element: withLoadingComponent(<Home />)
},
{
path: '/about',
element: withLoadingComponent(<About />)
},
{
path: '/user',
element: withLoadingComponent(<User />)
}
]
export default routes