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AGENTS.md@public/files/cal-diy/.opencode/skill/vercel-react-best-practices is agent-read markdown (agents) from modem-dev/ossrules.

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What the file says

# React Best Practices

**Version 1.0.0**  
Vercel Engineering  
January 2026

> **Note:**  
> This document is mainly for agents and LLMs to follow when maintaining,  
> generating, or refactoring React and Next.js codebases at Vercel. Humans  
> may also find it useful, but guidance here is optimized for automation  
> and consistency by AI-assisted workflows.

---

## Abstract

Comprehensive performance optimization guide for React and Next.js applications, designed for AI agents and LLMs. Contains 40+ rules across 8 categories, prioritized by impact from critical (eliminating waterfalls, reducing bundle size) to incremental (advanced patterns). Each rule includes detailed explanations, real-world examples comparing incorrect vs. correct implementations, and specific impact metrics to guide automated refactoring and code generation.

---

## Table of Contents

1. [Eliminating Waterfalls](#1-eliminating-waterfalls) — **CRITICAL**
   - 1.1 [Defer Await Until Needed](#11-defer-await-until-needed)
   - 1.2 [Dependency-Based Parallelization](#12-dependency-based-parallelization)
   - 1.3 [Prevent Waterfall Chains in API Routes](#13-prevent-waterfall-chains-in-api-routes)
…

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How to install

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B  13 of 14 checks passed. Deterministic, no model, same answer every run.
  • fail: No script tag (matched: <script)
  • pass: Size between 200 bytes and 200 KB (60535 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address

Source

GitHub

modem-dev/ossrules · 52 stars · license MIT · pushed 2026-09-21 · branch main

API

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GET https://markdownregistry.com/api/v1/blob/70ea9d85b44f54b38ad3af64a163d767cb5fa865db2c14cdebd8a977df589395

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