Individual skill

react18-dep-compatibility

React 18.3.1 and React 19 dependency compatibility matrix.

skills/react18-dep-compatibility/SKILL.md

Read pinned source

Source commit edbecfa9099c4addae1f500cca1ac067204b30fd

What was checked

Matches the observed repository HEAD: Yes
Scanner rules are current: Yes
Repository scan complete: No
Skill scan complete: Yes
Observed behavior: Instructions only
Last checked: Nov 4, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings): 40,891
Repository last updated: Nov 6, 2026
License: MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

ai Repository topic
github-copilot Repository topic
prompt-engineering Repository topic
hacktoberfest Repository topic
agent-skills Repository topic
agents Repository topic
awesome Repository topic
custom-agents Repository topic
engineering Derived category
engineering-web Derived category

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files

SKILL.mdcore · 4,519 bytes
references/apollo-details.mddoc · 2,465 bytes
references/router-migration.mddoc · 3,457 bytes

Read excerpt


# React Dependency Compatibility Matrix

Minimum versions required for React 18.3.1 and React 19 compatibility.

Use this skill whenever checking whether a dependency supports a target React version, resolving peer dependency conflicts, deciding whether to upgrade or use `legacy-peer-deps`, or assessing the risk of a `react-router` v5 to v6 migration.

Review this matrix before running `npm install` during a React upgrade and before accepting an npm dependency conflict resolution, especially where concurrent mode compatibility may be affected.
## Core Upgrade Targets

| Package | React 17 (current) | React 18.3.1 (min) | React 19 (min) | Notes |
|---|---|---|---|---|
| `react` | 17.x | **18.3.1** | **19.0.0** | Pin exactly to 18.3.1 for the R18 orchestra |
| `react-dom` | 17.x | **18.3.1** | **19.0.0** | Must match react version exactly |