Build: Don't format MDX files in monorepo

[Sidnioulz]

What I did

Puts an end to accidental formats of MDX content. Can be revisited later. You'll feel the need for this after editing the docs :)

Checklist for Contributors

Testing

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Manual testing

Edit MDX file in VSCode. Save. Notice no reformatting.

Documentation

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Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook publish.yml --field pr=<PR_NUMBER>

Summary by CodeRabbit

• Chores
  • Updated development environment configuration to adjust formatting behavior for MDX files.

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 7ed94b5

Command	Status	Duration	Result
nx run-many -t compile,check,knip,test,lint,fmt...	✅ Succeeded	5m 23s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-03-30 10:18:40 UTC

[Copilot]

Pull request overview

Stops VS Code from auto-formatting MDX files in this repo’s workspace settings, preventing accidental formatting changes while editing docs.

Changes:

• Adds a VS Code language-specific override to disable editor.formatOnSave for MDX files.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 61ea8428-885d-4d96-b366-e4c44f5fe5f2

📥 Commits

Reviewing files that changed from the base of the PR and between 039eb6c and 7ed94b5.

📒 Files selected for processing (1)

• .vscode/settings.json

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📝 Walkthrough

Walkthrough

Added a VS Code editor settings override for MDX files to disable automatic formatting on save, while preserving all other existing formatting behaviors controlled by global settings.

Changes

Cohort / File(s)	Summary
VS Code Settings .vscode/settings.json	Added language-specific editor setting to disable formatOnSave for MDX files.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

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