feat: remove findDomNode

[CoderSerio]

what this PR does

1. Remove the deprecated API findDOMNode.
2. Add a check to prevent the delete button in the dir /examples, from causing an error, when clicked while the list is empty.
3. Correct the port mentioned in README.md

Summary by CodeRabbit

• 文档更新

  • 更新了开发说明中的本地服务器端口，从 9001 更改为 8000

• 代码改进

  • 在 Demo 组件中使用可选链接 ?. 优化 scrollTo 方法调用
  • 简化 useHeights 钩子中的高度收集逻辑，直接访问 DOM 元素属性

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
virtual-list	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 7, 2025 2:57am

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examples/basic.tsx

Oops! Something went wrong! :(

ESLint: 8.57.1

Error: Cannot read config file: /.eslintrc.js
Error: Cannot find module '@umijs/fabric/dist/eslint'
Require stack:

• /.eslintrc.js
• /node_modules/.pnpm/@eslint[email protected]/node_modules/@eslint/eslintrc/dist/eslintrc.cjs
• /node_modules/.pnpm/[email protected]/node_modules/eslint/lib/cli-engine/cli-engine.js
• /node_modules/.pnpm/[email protected]/node_modules/eslint/lib/eslint/eslint.js
• /node_modules/.pnpm/[email protected]/node_modules/eslint/lib/eslint/index.js
• /node_modules/.pnpm/[email protected]/node_modules/eslint/lib/cli.js
• /node_modules/.pnpm/[email protected]/node_modules/eslint/bin/eslint.js
  at Module._resolveFilename (node:internal/modules/cjs/loader:1248:15)
  at Module._load (node:internal/modules/cjs/loader:1074:27)
  at TracingChannel.traceSync (node:diagnostics_channel:315:14)
  at wrapModuleLoad (node:internal/modules/cjs/loader:217:24)
  at Module.require (node:internal/modules/cjs/loader:1339:12)
  at require (node:internal/modules/helpers:135:16)
  at Object. (/.eslintrc.js:1:14)
  at Module._compile (node:internal/modules/cjs/loader:1546:14)
  at Module._extensions..js (node:internal/modules/cjs/loader:1691:10)
  at Module.load (node:internal/modules/cjs/loader:1317:32)

变更概览

变更说明

本次拉取请求包含对 rc-virtual-list 项目的三个文件进行了细微但重要的修改：README.md、examples/basic.tsx 和 src/hooks/useHeights.tsx。这些变更主要涉及开发服务器端口更新、代码健壮性改进和代码简化。

变更

文件	变更摘要
README.md	开发服务器端口从 9001 更改为 8000
examples/basic.tsx	在 scrollTo 方法调用中添加可选链操作符 ?.
src/hooks/useHeights.tsx	移除 findDOMNode 工具，直接访问元素的 offsetHeight 和计算样式

序列图

sequenceDiagram
    participant Dev as 开发者
    participant App as 应用程序
    participant List as 虚拟列表
    
    Dev->>App: 启动开发服务器
    App->>List: 初始化虚拟列表
    List-->>App: 列表准备就绪
    Dev->>List: 调用 scrollTo 方法
    Note over List: 安全地处理方法调用

Loading

可能相关的 PRs

• enhance: Scroll top should not shaking #296: 该 PR 中对 examples/basic.tsx 文件的更改涉及对 Demo 组件的修改，可能与本 PR 中的开发指令更新相关，影响虚拟列表组件的整体功能和用户体验。

诗歌

🐰 代码兔子的变更颂歌 🥕

端口轻移，八千取代九千一
可选链接，安全舞动
DOM 节点直达，不再绕远路
简洁优雅，兔子微笑
代码如春风，轻轻拂过

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 182111c and debf618.

📒 Files selected for processing (3)

• README.md (1 hunks)
• examples/basic.tsx (10 hunks)
• src/hooks/useHeights.tsx (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (3)

• README.md
• examples/basic.tsx
• src/hooks/useHeights.tsx

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