# kysely-org/kysely · RepoSense Release & Migration Intelligence

> Clients whose rollback fails are discarded instead of retu. Review breaking API changes before up… Migration: Moderate.

## Metadata
- **Repository URL**: https://github.com/kysely-org/kysely
- **Primary Package**: `kysely` (NPM)
- **Categories**: `DATABASE`, `BACKEND`
- **Latest Version**: `v0.29.8`
- **Semantic Status**: `BREAKING`
- **Bundle Size Impact (unavailable)**: `Size Unavailable`
- **Atom Ingestion Feed**: https://github.com/kysely-org/kysely/releases.atom

## The Human Context (Plain-English Pitch)
kysely is an open-source library and developer tool in the kysely-org/kysely 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])
Clients whose rollback fails are discarded instead of retu. Review breaking API changes before up… Migration: Moderate.

## Breaking Changes & Required Actions
- Clients whose rollback fails are discarded instead of returned to the pool for reuse.
- Commits that PostgreSQL turns into rollbacks now throw `AbortedTransactionError` instead of reporting success. Controlled transactions are marked as rolled back and release thei...
- fix(postgres): discard clients after failed rollbacks by @igalklebanov in #2155
- fix(postgres): reject commits that roll back aborted transactions by @igalklebanov in #2161

## Migration Snippet
```ts
npm install kysely@0.29.8
```

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

## Zero-Noise Release Timeline
- **v0.29.8** (2026-11-01) [BREAKING]: Clients whose rollback fails are discarded instead of retu. Review breaking API changes before up… Migration: Moderate.

## Upgrade & Migration Q&A (GEO Direct Answers)
### Is kysely-org/kysely v0.29.8 safe to upgrade in production?
kysely-org/kysely v0.29.8 is classified as BREAKING (PATCH release). Clients whose rollback fails are discarded instead of retu. Review breaking API changes before up… Migration: Moderate.

### What breaking changes or compatibility risks exist in kysely-org/kysely v0.29.8?
No breaking API changes or peer dependency conflicts are recorded for kysely-org/kysely v0.29.8 in the RepoSense compatibility graph.

### What is the bundle size impact of kysely v0.29.8?
Measured bundle size telemetry is currently unavailable for kysely v0.29.8; verify build output locally before deploying.

### How do I upgrade kysely to v0.29.8?
Upgrade kysely to v0.29.8 by running "npm install kysely@0.29.8" and applying the migration steps: npm install kysely@0.29.8