# Upstream and review

- Source: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/fbc33dd3590c31aa653079082d22500c9a191e65/types/mdast/v3
- Published baseline: `@types/mdast@3.0.15` (2023-11-07T20:25:36.253Z).
- Upstream tarball integrity: `sha512-LnwD+mUEfxWMa1QpDraczIn6k0Ee3SMicuYSSzS6ZYl2gKS09EClnJYGd8Du6rfc5r/GZEk5o1mRb8TaTj03sQ==`.
- `index.d.ts` was compared byte-for-byte with that commit and matched before maintenance changes.
- This standalone snapshot repository preserves original source content, contributors and license, but does **not** claim to preserve the DefinitelyTyped monorepo Git history.
- Only original-parent direct dependencies are in scope; dependencies of this declaration package are not recursively forked.

## Issue review

GitHub search on 2026-09-29 used `repo:DefinitelyTyped/DefinitelyTyped is:issue is:open "mdast"` and the corresponding closed query. Counts: open: 0 results (collected 0), closed: 0 results (collected 0). Search results can contain unrelated packages; they are not evidence that every result is a defect here. Archived search responses and baseline comparisons are retained in the release research evidence. No issue was posted or modified.

No matching open or closed issues were returned for mdast. The selected v3 tree and node constraints are compiled directly and under the original alias.

## Validation

Real declaration usage and negative type assertions are compiled with TypeScript 4.5.5 and 5.9.3, with `strict: true` and `skipLibCheck: false`, from source and isolated direct/alias tarball installs. CI also checks the complete dependency audit, CodeQL, package contents and exact CI archive identity before GitHub-only publication. Registry verification compiles direct and aliased installs rather than importing these type-only packages as JavaScript.