函数: lazy()

function lazy<T>(load: () => Promise<object>): LazyExoticComponent<T>

Lets you defer loading a component’s code until it is rendered for the first time.

类型参数

类型参数
`T` extends `ComponentType`<`any`>

范围	类型	描述
`load`	() => `Promise`<`object`>	A function that returns a `Promise` or another thenable (a `Promise`-like object with a then method). React will not call `load` until the first time you attempt to render the returned component. After React first calls load, it will wait for it to resolve, and then render the resolved value’s `.default` as a React component. Both the returned `Promise` and the `Promise`’s resolved value will be cached, so React will not call load more than once. If the `Promise` rejects, React will throw the rejection reason for the nearest Error Boundary to handle.

LazyExoticComponent<T>

import { lazy } from 'react';

const MarkdownPreview = lazy(() => import('./MarkdownPreview.js'));

.pnpm/@types+react@18.3.28/node_modules/@types/react/ts5.0/index.d.ts:1810