Individual skill

react19-concurrent-patterns

Preserve React 18 concurrent patterns and adopt React 19 APIs (useTransition, useDeferredValue, Suspense, use(), useOptimistic, Actions) during migration.

skills/react19-concurrent-patterns/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: No
Observed behavior: Network or broad shell
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): 40,888
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 · 2,890 bytes
SKILL.mdcore · 2,890 bytes
references/react19-actions.mddoc · 9,632 bytes
references/react19-suspense.mddoc · 7,769 bytes
references/react19-use.mddoc · 5,088 bytes

Read excerpt


# React 19 Concurrent Patterns

React 19 introduced new APIs that complement the migration work. This skill covers two concerns:

1. **Preserve**  existing React 18 concurrent patterns that must not be broken during migration
2. **Adopt**  new React 19 APIs worth introducing after migration stabilizes

## Part 1  Preserve: React 18 Concurrent Patterns That Must Survive the Migration

These patterns exist in React 18 codebases and must not be accidentally removed or broken:

### createRoot  Already Migrated by the R18 Orchestra

If the R18 orchestra already ran, `ReactDOM.render` → `createRoot` is done. Verify it's correct: