Useanimation hook feature

[desireddymohithreddy0925]

Description

This PR introduces the useAnimation hook into @termuijs/jsx. Previously, using the terminal spring physics engine from @termuijs/motion inside declarative JSX components was highly cumbersome, requiring manual useRef tracking and useEffect timer cleanup.

The new useAnimation(targetValue, config) hook abstracts the animateSpring API. It automatically interpolates the value, intercepts velocity if the target changes mid-flight, triggers 60fps re-renders, and safely unsubscribes the timer pool on unmount!

Related Issue

Closes #2260

Which package(s)?

@termuijs/jsx

Type of Change

• 🐛 Bug fix (type:bug)
• ✨ Feature (type:feature)
• 📝 Docs (type:docs)
• 🧪 Tests (type:testing)
• ♻️ Refactor (type:refactor)
• 🎨 Design / UX (type:design)
• ♿ Accessibility (type:accessibility)
• ⚡ Performance (type:performance)
• 🔧 DevOps / CI (type:devops)
• 🔒 Security (type:security)

Checklist

• ⭐ You starred the repo. The needs-star check blocks your merge otherwise.
• Tests pass locally: bun vitest run
• Build passes: bun run build
• Typecheck passes: bun run typecheck
• You read CONTRIBUTING.md.
• Your PR title follows type: short description.
• Widget state mutators call markDirty() (if your change affects rendering).
• No new any types without an inline comment explaining why.
• No unrelated refactors bundled into this PR.

GSSoC 2026 Participation

• You are a GSSoC 2026 contributor.
• Your GSSoC profile: https://gssoc.girlscript.org/profile/YOUR_PROFILE_ID_HERE

Screenshots / Recordings (UI changes)

Notes for the Reviewer

By tracking animatedValueRef.current inside the useAnimation closure, the hook prevents the spring from resetting back to the initial value if the React component re-renders due to unrelated state changes while the animation is playing.

[coderabbitai]

Warning

Review limit reached

@desireddymohithreddy0925, you've reached your PR review limit, so we couldn't start this review.

Next review available in: 34 minutes

Enable usage-based reviews in Billing to review now. Otherwise, wait until the next included review is available.
You're only billed for reviews past your plan's rate limits ($0.25/file).

How can I continue?

After more reviews become available, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

To avoid repeated limits, reduce automatic review volume by pausing incremental auto-reviews earlier, using label-based review opt-in, excluding WIP or generated PR titles, or requesting reviews manually when the PR is ready. If your team needs uninterrupted high-volume reviews, an organization admin can enable usage-based reviews.

How do review limits work?

CodeRabbit enforces per-developer PR review limits for each organization. Most developers receive the normal plan review availability.

For paid Pro and Pro+ PR reviews, CodeRabbit uses adaptive limits for sustained high-volume activity. When a developer's recent PR review activity reaches the 95th percentile or higher among CodeRabbit users, additional reviews become available more gradually as earlier reviews age out of the rolling window.

Please refer docs for additional details.

Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 184efdac-94d2-4fcd-9541-e925b7fef1d7

📥 Commits

Reviewing files that changed from the base of the PR and between 65d1f7e and c1afcb3.

📒 Files selected for processing (2)

• packages/jsx/src/hooks/useAnimation.ts
• packages/jsx/src/index.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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.}