Living definition
What is Rolldown 1.0?
Developer Platforms & Build Compute & Web Infra
- As of
- 2026-09-30
- Revision
- 2026-10-06.1
- Method
- v1.4.0
Definition
The term, in context
AI-assisted draft · approved dataset
Rolldown is a JavaScript and TypeScript bundler written in Rust that exposes a plugin interface deliberately compatible with Rollup's API, letting most existing Rollup and Vite plugins run with little or no change. It combines the fast dependency pre-bundling role and the full production-bundling role that a typical build toolchain previously split across two separate tools into a single engine.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-09-30, verified readiness is 25 (claimed 55, reported 35, gap 30) — Critical evidence strength; current signals suggest Consider a controlled migration after testing your production bundles.
The readiness fact belongs to the canonical Readiness Verdict for Rolldown 1.0.
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06