# nodejs/undici · RepoSense Release & Migration Intelligence

> docs: clarify that `origin` is optional only for origin-bo. Upgrade immediately to patch advisory. Migration: Low.

## Metadata
- **Repository URL**: https://github.com/nodejs/undici
- **Primary Package**: `undici` (NPM)
- **Categories**: `ECOSYSTEM`, `RUNTIME`
- **Latest Version**: `v8.12.4`
- **Semantic Status**: `SECURITY_PATCH`
- **Bundle Size Impact (unavailable)**: `Size Unavailable`
- **Atom Ingestion Feed**: https://github.com/nodejs/undici/releases.atom

## The Human Context (Plain-English Pitch)
undici is an open-source library and developer tool in the nodejs/undici 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])
docs: clarify that `origin` is optional only for origin-bo. Upgrade immediately to patch advisory. Migration: Low.

## Breaking Changes & Required Actions
- docs: clarify that `origin` is optional only for origin-bound dispatchers by @attilayener in #5994
- fix(mock): ignore the trailing slash before a query string by @lprnmns in #6031
- build(deps-dev): bump eslint from 10.12.0 to 10.13.0 by @dependabot[bot] in #6059
- build(deps-dev): bump neostandard from 0.14.0 to 0.14.1 by @dependabot[bot] in #6058

## Migration Snippet
```ts
npm install undici@8.12.4
```

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

## Zero-Noise Release Timeline
- **v8.12.4** (2026-11-05) [SECURITY_PATCH]: docs: clarify that `origin` is optional only for origin-bo. Upgrade immediately to patch advisory. Migration: Low.

## Upgrade & Migration Q&A (GEO Direct Answers)
### Is nodejs/undici v8.12.4 safe to upgrade in production?
nodejs/undici v8.12.4 is classified as SECURITY_PATCH (PATCH release). docs: clarify that `origin` is optional only for origin-bo. Upgrade immediately to patch advisory. Migration: Low.

### What breaking changes or compatibility risks exist in nodejs/undici v8.12.4?
No breaking API changes or peer dependency conflicts are recorded for nodejs/undici v8.12.4 in the RepoSense compatibility graph.

### What is the bundle size impact of undici v8.12.4?
Measured bundle size telemetry is currently unavailable for undici v8.12.4; verify build output locally before deploying.

### How do I upgrade undici to v8.12.4?
Upgrade undici to v8.12.4 by running "npm install undici@8.12.4" and applying the migration steps: npm install undici@8.12.4