# vercel/swr · RepoSense Release & Migration Intelligence

> Add cache tag revalidation support by @WITS in #4336. Pre-release build; test in staging. Migration: Low.

## Metadata
- **Repository URL**: https://github.com/vercel/swr
- **Primary Package**: `swr` (NPM)
- **Categories**: `STATE_MANAGEMENT`
- **Latest Version**: `v2.6.0-beta.0`
- **Semantic Status**: `WARNING`
- **Bundle Size Impact (unavailable)**: `Size Unavailable`
- **Atom Ingestion Feed**: https://github.com/vercel/swr/releases.atom

## The Human Context (Plain-English Pitch)
swr is an open-source library and developer tool in the vercel/swr ecosystem. It saves developers from writing repetitive low-level boilerplate from scratch by providing a battle-tested, open-source implementation ready for production.

## Stage 1 Executive Summary ([Core Change] + [Required Action] + [Migration Effort])
Add cache tag revalidation support by @WITS in #4336. Pre-release build; test in staging. Migration: Low.

## Breaking Changes & Required Actions
- Add cache tag revalidation support by @WITS in #4336
- [ci] add prevent deployment config by @huozhi in #4326
- Chore: Fix X handle link by @shuding in #4334
- @WITS made their first contribution in #4336

## Migration Snippet
```ts
npm install swr@2.6.0-beta.0
```

## Ecosystem Compatibility Matrix & Graph Warnings
- **TypeScript 5.x** [`COMPATIBLE`]: Ships standard TypeScript declaration files without type regressions.

## Zero-Noise Release Timeline
- **v2.6.0-beta.0** (2026-09-22) [WARNING]: Add cache tag revalidation support by @WITS in #4336. Pre-release build; test in staging. Migration: Low.

## Upgrade & Migration Q&A (GEO Direct Answers)
### Is vercel/swr v2.6.0-beta.0 safe to upgrade in production?
vercel/swr v2.6.0-beta.0 is classified as WARNING (PRERELEASE release). Add cache tag revalidation support by @WITS in #4336. Pre-release build; test in staging. Migration: Low.

### What breaking changes or compatibility risks exist in vercel/swr v2.6.0-beta.0?
No breaking API changes or peer dependency conflicts are recorded for vercel/swr v2.6.0-beta.0 in the RepoSense compatibility graph.

### What is the bundle size impact of swr v2.6.0-beta.0?
Measured bundle size telemetry is currently unavailable for swr v2.6.0-beta.0; verify build output locally before deploying.

### How do I upgrade swr to v2.6.0-beta.0?
Upgrade swr to v2.6.0-beta.0 by running "npm install swr@2.6.0-beta.0" and applying the migration steps: npm install swr@2.6.0-beta.0