# What changed in @markdoc/markdoc

> 9 changes in @markdoc/markdoc 0.5 from its official release notes, upgrade guides and advisories: 3 breaking, 2 new APIs and options. Each one cited. Sources checked 2026-10-27. HTML: https://unstale.sh/npm/@markdoc/markdoc/

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

## @markdoc/markdoc 0.5

### Breaking changes

- The formatter now prefixes every line of a blockquote's children with >. (0.5.10) — [release notes](https://github.com/markdoc/markdoc/releases/tag/v0.5.10)
- Build output now targets ES2022+, so pipelines that transpile @markdoc/markdoc may need toolchain support for features such as static class blocks. (0.5.7) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.7)
- Markdoc.validate now raises errors for invalid syntax within table tags, helping identify invalid Markdoc table syntax. (0.5.6) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.6)

### New APIs and options

- Enables enhanced link validation, which can detect Markdoc variables and tags in URLs. (0.5.8) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.8)
- You can provide a list of conditional tags in addition to `if`; `['if']` remains the default. (0.5.5) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.5)

### Behavior and default changes

- Parsing now supports multi-line tag openings inside blockquotes. (0.5.10) — [release notes](https://github.com/markdoc/markdoc/releases/tag/v0.5.10)
- The validate() method returns more location and line information, making table-syntax validation error locations more precise. (0.5.7) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.7)

### Fixes and other changes

- Fixes a type error when slicing annotation block content. (0.5.11) — [release notes](https://github.com/markdoc/markdoc/releases/tag/v0.5.11)
- Schema.children is now strongly typed, improving type information for developers using the schema. (0.5.9) — [release notes](https://github.com/markdoc/markdoc/releases/tag/0.5.9)