react18-batching-fixer

react18-batching-fixer is an agent for Claude Code from jiamaozheng/awesome-claude-code. It costs 76 tokens per session (2,610 once invoked), scanned A, original, no licence file.

A specialist for finding and fixing React 18 bugs caused by automatic batching, where several state updates are grouped into one render.

In plain words
What is it for?
It checks class components that update state inside promises, timers, or browser event handlers and fixes code that depended on intermediate renders.
Why use it?
React 16 and 17 could render between some asynchronous state updates, while React 18 may delay those renders and change the result of state-update chains.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; Copilot chat-mode frontmatter (tools: vscode/*).

Good fit It checks class components that update state inside promises, timers, or browser event handlers and fixes code that depended on intermediate renders.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/jiamaozheng/awesome-claude-code/react18-batching-fixer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/jiamaozheng/awesome-claude-code

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for react18-batching-fixer

README.md
[![agentmods](https://agentmods.dev/badge/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer/github.svg)](https://agentmods.dev/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer)
Your own site
<a href="https://agentmods.dev/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer"><img src="https://agentmods.dev/badge/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for react18-batching-fixer

Your own site · 80×15
<a href="https://agentmods.dev/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer"><img src="https://agentmods.dev/badge/agents/jiamaozheng/awesome-claude-code/react18-batching-fixer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00076 $0.02610
Opus 5 $0.00038 $0.01305
Sonnet 5 $0.00015 $0.00522
Haiku 4.5 $0.00008 $0.00261

Measured 7d ago against content hash 38e4aed33041, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

react18-batching-fixer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/react18-batching-fixer.md · 320 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 320 lines · 76 tokens per session scan A 38e4aed33041

Subscribe to this mod's changes

react18-batching-fixer is an agent published in the GitHub repository jiamaozheng/awesome-claude-code (1 stars, last pushed yesterday), with no licence file. It adds 76 tokens to every session and 2,610 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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