# What changed in @streamdown/mermaid

> 3 changes in @streamdown/mermaid 1 from its official release notes, upgrade guides and advisories: 1 breaking, 1 security. Each one cited. Sources checked 2026-10-17. HTML: https://unstale.sh/npm/@streamdown/mermaid/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @streamdown/mermaid 1

### Breaking changes

- CJS builds were removed, affecting projects or tooling that consume CommonJS output. (1.0.2) — [release notes](https://github.com/vercel/streamdown/releases/tag/%40streamdown/mermaid%401.0.2)

### Security

- Patched an upstream security vulnerability. (1.0.2) — [release notes](https://github.com/vercel/streamdown/releases/tag/%40streamdown/mermaid%401.0.2)

### Fixes and other changes

- Corrected the zoom-out icon SVG in the Mermaid preview plugin. (1.0.2) — [release notes](https://github.com/vercel/streamdown/releases/tag/%40streamdown/mermaid%401.0.2)