Update Review Rules
imbue-ai/sculptor
Add a new issue type to one of Sculptor's review-rule docs. An agent skill from imbue-ai/sculptor.
Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components.
Install React18 Batching Patterns
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install github/awesome-copilot react18-batching-patterns --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/react18-batching-patterns .claude/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.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/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .claude/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patternsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install github/awesome-copilot react18-batching-patterns --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/react18-batching-patterns .agents/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .agents/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install github/awesome-copilot react18-batching-patterns --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/react18-batching-patterns .cursor/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .cursor/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/github/awesome-copilot.git --path skills/react18-batching-patterns--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install github/awesome-copilot react18-batching-patterns --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/react18-batching-patterns .gemini/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .gemini/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install github/awesome-copilot react18-batching-patternsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/react18-batching-patterns .github/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .github/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add github/awesome-copilot --skill react18-batching-patterns -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install github/awesome-copilot react18-batching-patterns --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/react18-batching-patterns .opencode/skills/react18-batching-patterns && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "react18-batching-patterns" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/react18-batching-patterns into .opencode/skills/react18-batching-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react18-batching-patterns", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
react18-batching-patterns- GitHub stars
- 40k
- Used in
- 1 other repo
- Token cost
- ~621 tokens
- SKILL.md length
- 214 words
- Files
- 3 (incl. references)
- Skills in repo
- 417
- Repo updated
- First seen
- Licence
- MIT
At a glance
Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components.
- A class component has multiple setState calls in an async method
- SKILL.md covers The Core Change, Quick Diagnosis and The flushSync Rule
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Inside setTimeout
What it does
React18 Batching Patterns is an agent skill from github/awesome-copilot, published by the product's own GitHub organization. Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components. Use this skill whenever a class component has multiple setState calls in an async method, inside setTimeout, inside a Promise .then() or .catch(), or in a native event handler. Use it before writing any flushSync call - the decision tree here prevents unnecessary flushSync overuse. Also use this skill when fixing test failures caused by intermediate state assertions that break after React 18 upgrade.
Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/batching-categories.md` and `references/flushSync-guide.md`).
It sits in Testing & QA, covering Failing and flaky tests. It works with React. The repository describes itself as: Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot. The licence is MIT.
When your agent uses it
- A class component has multiple setState calls in an async method
- Inside setTimeout
- Inside a Promise .then()
- In a native event handler
Example prompts
- “Use the react18-batching-patterns skill to provide exact patterns for diagnosing and fixing automatic batching regressions in React 18 class…”
- “/react18-batching-patterns”
What it can do on your machine
Read from SKILL.md and the folder at commit 7cce7cf. 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
React18 Batching Patterns loads about 621 tokens when it runs, and up to ~2.7k if it reads all its reference files. Until then it costs about 135 tokens; SKILL.md has 214 words of instructions outside code blocks.
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
The full file from github/awesome-copilot at commit 7cce7cf, republished under its MIT licence (© github). 214 words, ~621 tokens.
Download SKILL.mdSave it as
.claude/skills/react18-batching-patterns/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- react18-batching-patterns
- description
- Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components. Use this skill whenever a class component has multiple setState calls in an async method, inside setTimeout, inside a Promise .then() or .catch(), or in a native event handler. Use it before writing any flushSync call - the decision tree here prevents unnecessary flushSync overuse. Also use this skill when fixing test failures caused by intermediate state assertions that break after React 18 upgrade.
React 18 Automatic Batching Patterns
Reference for diagnosing and fixing the most dangerous silent breaking change in React 18 for class-component codebases.
The Core Change
| Location of setState | React 17 | React 18 |
|---|---|---|
| React event handler | Batched | Batched (same) |
| setTimeout | Immediate re-render | Batched |
| Promise .then() / .catch() | Immediate re-render | Batched |
| async/await | Immediate re-render | Batched |
| Native addEventListener callback | Immediate re-render | Batched |
Batched means: all setState calls within that execution context flush together in a single re-render at the end. No intermediate renders occur.
Quick Diagnosis
Read every async class method. Ask: does any code after an await read this.state to make a decision?
Code reads this.state after await?
YES → Category A (silent state-read bug)
NO, but intermediate render must be visible to user?
YES → Category C (flushSync needed)
NO → Category B (refactor, no flushSync)For the full pattern for each category, read:
references/batching-categories.md- Category A, B, C with full before/after codereferences/flushSync-guide.md- when to use flushSync, when NOT to, import syntax
The flushSync Rule
Use flushSync sparingly. It forces a synchronous re-render, bypassing React 18's concurrent scheduler. Overusing it negates the performance benefits of React 18.
Only use flushSync when:
- The user must see an intermediate UI state before an async operation begins
- A spinner/loading state must render before a fetch starts
- Sequential UI steps have distinct visible states (progress wizard, multi-step flow)
In most cases, the fix is a refactor - restructuring the code to not read this.state after await. Read references/batching-categories.md for the correct approach per category.
© github, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (references) in skills/react18-batching-patterns of github/awesome-copilot.
- SKILL.md
- references/batching-categories.md
- references/flushSync-guide.md
Open the folder on GitHubat commit 7cce7cf
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in github/awesome-copilot, which our catalogue first saw on October 7, 2026.
Compare with similar skills
React18 Batching Patterns 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| React18 Batching Patterns this skillgithub/awesome-copilot | 40k | 1 repos | ~621 | Automated safety check: Pass | MIT | |
| Update Review Rulesimbue-ai/sculptor | 236 | — | ~1.4k | Automated safety check: Pass | MIT | |
| Bug Hunteroctanejs/octane | 1.4k | — | ~707 | Automated safety check: Pass | MIT | |
| Suede Code ReviewJasonColapietro/suede-creator-skills | 127 | — | ~7.1k | Automated safety check: Pass | MIT | |
| Test Guided Migration AssistantArabelaTso/Skills-4-SE | 253 | — | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Pester Failure AnalysisPowerShell/PowerShell | 56k | — | ~5.1k | Automated safety check: Pass | MIT |
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Works with
Categories
Questions about React18 Batching Patterns
What does React18 Batching Patterns do?
Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components. React18 Batching Patterns is an agent skill from github/awesome-copilot, published by the product's own GitHub organization. Provides exact patterns for diagnosing and fixing automatic batching regressions in React 18 class components.
When should I use React18 Batching Patterns?
React18 Batching Patterns fits situations like: A class component has multiple setState calls in an async method; inside setTimeout; inside a Promise .then(); in a native event handler.
How do I install React18 Batching Patterns in Claude Code?
Run `npx skills add github/awesome-copilot --skill react18-batching-patterns -a claude-code`. Or copy the skill folder (skills/react18-batching-patterns in github/awesome-copilot) into .claude/skills/react18-batching-patterns in your project. Claude Code loads it when a task matches its description.
How do I install React18 Batching Patterns in Codex?
Run `npx skills add github/awesome-copilot --skill react18-batching-patterns -a codex`. Or copy the skill folder (skills/react18-batching-patterns in github/awesome-copilot) into .agents/skills/react18-batching-patterns in your project. Codex loads it when a task matches its description.
Can I use React18 Batching Patterns 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 github/awesome-copilot --skill react18-batching-patterns -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/react18-batching-patterns, .gemini/skills/react18-batching-patterns, .github/skills/react18-batching-patterns and .opencode/skills/react18-batching-patterns in your project.
What does React18 Batching Patterns need to run?
SKILL.md names no scripts, command-line tools or credentials: React18 Batching Patterns is instructions for the agent only.
Does React18 Batching Patterns 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 React18 Batching Patterns 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 React18 Batching Patterns use?
React18 Batching Patterns is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does React18 Batching Patterns use?
About 621 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.1k tokens, read only when the agent opens those files.
What are the alternatives to React18 Batching Patterns?
Skills that share tags, products or a category with React18 Batching Patterns: Update Review Rules (imbue-ai/sculptor, 236 stars), Bug Hunter (octanejs/octane, 1.4k stars), Suede Code Review (JasonColapietro/suede-creator-skills, 127 stars) and Test Guided Migration Assistant (ArabelaTso/Skills-4-SE, 253 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains React18 Batching Patterns?
github (a GitHub organization, an official publisher) maintains it in github/awesome-copilot, which has 39,792 GitHub stars. The repository holds 417 skills in this directory. The repository was last updated on October 8, 2026.
Source: github/awesome-copilot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.