vite-plugin-istanbul@4.1.0" has incorrect peer dependency "vite@>=2.9.1 <= 5"

[MikeMcC399]

Current behavior

Executing yarn causes the warning:

warning " > vite-plugin-istanbul@4.1.0" has incorrect peer dependency "vite@>=2.9.1 <= 5".

Expected behavior

No mismatched dependency warning for vite-plugin-istanbul and vite.

Steps to reproduce

Ubuntu 24.04.3 LTS, Node.js 22.18.0 LTS, Yarn 1.22.22

git clone https://github.com/cypress-io/cypress-realworld-app
cd cypress-realworld-app
yarn

Assessment

• vite was updated to from vite@4 to vite@^7.1.3 through PR chore(deps): update dependency vite to version 7.x 🌟 #1657 on Aug 21, 2025
• vite-plugin-istanbul@7.1.0 is the minimum version required to support Vite 7
• yarn dev fails to run for vite-plugin-istanbul >=6 with error message:

  [start:react] ✘ [ERROR] Failed to resolve "vite-plugin-istanbul". This package is ESM only but it was tried to load by require. See https://vite.dev/guide/troubleshooting.html#this-package-is-esm-only for more details. [plugin externalize-deps]

This means that resolving this issue is more complex than a simple version update of vite-plugin-istanbul

[babyitachi]

@MikeMcC399 can I take this one?

[MikeMcC399]

@babyitachi

can I take this one?

The Cypress.io team, who are the maintainers, would need to answer your question. I don't know what they are planning at the moment.