Missing dependency on acorn

[aqeelat]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything (or linked relevant results below)

Affected package

@mdx-js/mdx

Steps to reproduce

node corepack enable
yarn set version 4.9.0
yarn add @mdx-js/mdx

Actual behavior

p853b8 → ✘ @mdx-js/mdx@npm:3.1.0 doesn't provide acorn to recma-jsx@npm:1.0.1 [8c510] and 1 other dependency

Expected behavior

To provide the dependency.

The way I fix it is by adding this to my .yarnrc.yml

packageExtensions:
  "@mdx-js/mdx@^3.0.0":
    dependencies:
      acorn: ^8.0.0

Runtime

node@24.5.0

Package manager

yarn@4.9.2

Operating system

No response

Build and bundle tools

Vite