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Agent skill

Implement UI Transition

by videojs in videojs/video.js

Implement UI transitions and rendered presence. An agent skill from videojs/video.js.

Custom licenceAuto-check passed

Install Implement UI Transition

skills CLI
$ npx skills add videojs/video.js --skill implement-ui-transition -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install videojs/video.js implement-ui-transition --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/videojs/video.js.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/implement-ui-transition .claude/skills/implement-ui-transition && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
implement-ui-transition
GitHub stars
40k
Token cost
~532 tokens
SKILL.md length
234 words
Files
1
Skills in repo
38
Repo updated
First seen
Licence
Custom licence

At a glance

Implement UI transitions and rendered presence. An agent skill from videojs/video.js.

  • Works in 7 steps: Define logical state, rendered presence,… → Reuse TransitionState,… → Apply data-starting-style before the… → …
  • HTML/React parity
  • SKILL.md covers Workflow and Example
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Implement UI Transition is an agent skill from videojs/video.js. Implement UI transitions and rendered presence. Use for lifecycle, cancellation, rapid reopen, or HTML/React parity.

Its SKILL.md is about 530 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with React. The repository describes itself as: Video.js v10 - open source media player framework for HTML and React.

When your agent uses it

  • HTML/React parity

Example prompts

  • “/implement-ui-transition”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Define logical state, rendered presence, transition completion, and the lifetime of focus, payload, locks, and callbacks.
  2. Reuse TransitionState, TransitionDataAttrs, and createTransition. Do not add component-local timers or framework-only presence state for…
  3. Apply data-starting-style before the first visible frame. Keep content active during data-ending-style; let CSS own duration, easing…
  4. Adapt the same transition state into HTML and React. Keep immediate change callbacks distinct from completion callbacks, and retain data…
  5. Handle no-animation completion, cancellation, rapid reopen, repeated updates during exit, disconnect, and destroy. Never infer completion…
  6. Add CSS custom properties only for dynamic geometry or values consumers need for styling. Preserve a usable reduced-motion path without…
  7. Test state and data-attribute ordering, presence through exit, completion, races, cleanup, and platform parity. Verify the rendered…

What it can do on your machine

Read from SKILL.md and the folder at commit 50f59a2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Implement UI Transition loads about 532 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 234 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~35
When it runs · the whole SKILL.md, loaded when a task matches
~532

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 234 words (~532 tokens).

“Read packages/core/src/core/ui/transition.ts, packages/core/src/dom/ui/transition.ts, their tests, and the nearest HTML and React integrations before changing transition behavior. Popover is the general open/close example; input indicators cover payload retention during exit.”

— opening of SKILL.md by videojs, Custom licence
name
implement-ui-transition

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/implement-ui-transition of videojs/video.js.

Open the folder on GitHubat commit 50f59a2

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in videojs/video.js, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Implement UI Transition next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Implement UI Transition compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Implement UI Transition this skillvideojs/video.js40k—~532Automated safety check: PassCustom licence
Web Artifacts Builderanthropics/skills180k40 repos~769Automated safety check: PassApache-2.0
React Doctormakeplane/plane60k12 repos~657Automated safety check: PassAGPL-3.0
React Composition Patternsvercel-labs/openreview1.7k58 repos~721Automated safety check: PassMIT
React Router Developmentremix-run/react-router57k1 repos~1.5kAutomated safety check: PassMIT
Electron Multi-Process ArchitectureiOfficeAI/AionUi33k1 repos~1.8kAutomated safety check: PassApache-2.0

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More from videojs/video.js

All 38 skills in this repo

  • Commit PR

    videojs/video.js

    Commit, push, and create or update a Video.js pull request. An agent skill from videojs/video.js.

    40k GitHub stars~445 tokensUpdated today
    Auto-check passed

  • Maintain Tests

    videojs/video.js

    Gate and audit test value. An agent skill from videojs/video.js.

    40k GitHub stars~2.2k tokensUpdated today
    Auto-check passed

  • Write API Reference

    videojs/video.js

    Write generated Video.js API reference pages. An agent skill from videojs/video.js.

    40k GitHub stars~804 tokensUpdated today
    Auto-check passed

  • Write Docs

    videojs/video.js

    Write Video.js guides, concepts, READMEs, and JSDoc. An agent skill from videojs/video.js.

    40k GitHub stars~741 tokensUpdated today
    Auto-check passed

  • Write Locale Translations

    videojs/video.js

    Translate or audit the values in a Video.js locale pack. An agent skill from videojs/video.js.

    40k GitHub stars~723 tokensUpdated today
    Auto-check passed

  • Change Spf Behavior

    videojs/video.js

    Change SPF playback-engine behaviors. An agent skill from videojs/video.js.

    40k GitHub stars~451 tokensUpdated today
    Auto-check passed

Works with

Questions about Implement UI Transition

What does Implement UI Transition do?

Implement UI transitions and rendered presence. An agent skill from videojs/video.js. js. Implement UI transitions and rendered presence.

When should I use Implement UI Transition?

Implement UI Transition fits situations like: HTML/React parity.

How do I install Implement UI Transition in Claude Code?

Run `npx skills add videojs/video.js --skill implement-ui-transition -a claude-code`. Or copy the skill folder (.agents/skills/implement-ui-transition in videojs/video.js) into .claude/skills/implement-ui-transition in your project. Claude Code loads it when a task matches its description.

How do I install Implement UI Transition in Codex?

Run `npx skills add videojs/video.js --skill implement-ui-transition -a codex`. Or copy the skill folder (.agents/skills/implement-ui-transition in videojs/video.js) into .agents/skills/implement-ui-transition in your project. Codex loads it when a task matches its description.

Can I use Implement UI Transition in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add videojs/video.js --skill implement-ui-transition -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/implement-ui-transition, .gemini/skills/implement-ui-transition, .github/skills/implement-ui-transition and .opencode/skills/implement-ui-transition in your project.

What does Implement UI Transition need to run?

SKILL.md names no scripts, command-line tools or credentials: Implement UI Transition is instructions for the agent only.

Does Implement UI Transition access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Implement UI Transition safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Implement UI Transition use?

Implement UI Transition has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Implement UI Transition use?

About 532 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Implement UI Transition?

Skills that share tags, products or a category with Implement UI Transition: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 60k stars), React Composition Patterns (vercel-labs/openreview, 1.7k stars) and React Router Development (remix-run/react-router, 57k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Implement UI Transition?

videojs (a GitHub organization) maintains it in videojs/video.js, which has 39,909 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on October 7, 2026.

Source: videojs/video.js on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.