feat: support element

[zombieJ]

Summary by CodeRabbit

改进

• API 增强
  • resize 观察器钩子现在支持直接传入 HTML 元素或返回元素的函数，提供更灵活的目标元素指定方式，优化了依赖跟踪和资源清理。

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[vercel]

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

Project	Deployment	Review	Updated (UTC)
resize-observer	Ready	Preview, Comment	Jan 15, 2026 7:04am

[coderabbitai]

Caution

Review failed

The pull request is closed.

演进总结

修改了 useResizeObserver 钩子函数的 getTarget 参数，使其接受 HTMLElement 或返回 HTMLElement 的函数两种类型。通过运行时类型判断和条件分支来解析目标元素，并相应调整了依赖数组和清理逻辑。

变更内容

组件 / 文件(s)	变更摘要
useResizeObserver 钩子参数类型扩展 src/useResizeObserver.ts	扩宽 getTarget 参数类型：从仅支持函数改为支持 HTMLElement | (() => HTMLElement)。新增运行时类型检查 (typeof getTarget === 'function')，根据类型分别处理直接元素或函数调用。调整 useEffect 依赖数组逻辑，支持静态目标稳定清理。优化cleanup函数使用已解析的目标。

可能相关的 PRs

• feat: export useResizeObserver hooks #224: 对同一 useResizeObserver 钩子的 getTarget 参数处理进行了更新，允许接受 HTMLElement 或函数类型，涉及运行时目标解析和依赖数组调整，与本 PR 的核心变更直接对应。

估计代码审查工作量

🎯 3 (中等) | ⏱️ ~20 分钟

诗歌

🐰 参数从函数化身，
静态动态皆接纳，
依赖轻盈舞翩跹，
清理逻辑巧重排，
ResizeObserver 更灵活！✨

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch support-ele

---

---

📜 Recent review details

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 2d3833c and 82e2ee2.

📒 Files selected for processing (1)

• src/useResizeObserver.ts

_{✏️ Tip: You can disable this entire section by setting review_details to false in your review settings.}

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.16%. Comparing base (2d3833c) to head (82e2ee2).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #225      +/-   ##
==========================================
+ Coverage   94.07%   94.16%   +0.08%     
==========================================
  Files           6        6              
  Lines         135      137       +2     
  Branches       38       40       +2     
==========================================
+ Hits          127      129       +2     
  Misses          7        7              
  Partials        1        1              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.