build(deps-dev): bump prettier to 3.9.5 with formatting fixes

[cursor]

Asana Task/Github Issue: Companion fix for #2901 (Dependabot prettier bump). Supersedes #2859.

Description

Bumps prettier from 3.8.4 to 3.9.5 and applies the formatting changes required by Prettier 3.9.0's JavaScript/TypeScript output updates.

Without the formatting commit, npm run lint and the snapshots test-clean-tree job fail because these files are reformatted by 3.9.x but not updated:

• messaging/lib/shared-types.ts (conditional-type extends parentheses)
• special-pages/pages/new-tab/app/activity/NormalizeDataProvider.js (ternary semicolon in prettier-ignore block)
• special-pages/pages/new-tab/app/components/BackgroundProvider.js (ternary semicolon in prettier-ignore block)
• special-pages/pages/new-tab/types/new-tab.ts (regenerated union type layout)

Testing Steps

• npx prettier . --check passes
• npm run test-clean-tree passes
• Verified npx prettier@3.8.4 . --check passes on main; npx prettier@3.9.5 . --check fails before formatting fixes and passes after

Checklist

• I have tested this change locally
• I have tested this change locally in all supported browsers
• This change will be visible to users
• I have added automated tests that cover this change
• I have ensured the change is gated by config
• This change was covered by a ship review
• This change was covered by a tech design
• Any dependent config has been merged

  

[github-actions]

Build Branch

Branch	pr-releases/cursor/dependency-update-risk-review-f921
Commit	beac4c231a
Updated	July 27, 2026 at 11:18:28 AM UTC

Static preview entry points

• Docs: docs/index.html
• Static pages: build/integration/pages/index.html
• Integration pages: injected/integration-test/test-pages/index.html

QR codes (mobile preview)

Entry point	QR code
Docs
Static pages
Integration pages

Integration commands

npm (Android / Extension):

npm i github:duckduckgo/content-scope-scripts#pr-releases/cursor/dependency-update-risk-review-f921

Swift Package Manager (Apple):

.package(url: "https://github.com/duckduckgo/content-scope-scripts.git", branch: "pr-releases/cursor/dependency-update-risk-review-f921")

git submodule (Windows):

git -C submodules/content-scope-scripts fetch origin pr-releases/cursor/dependency-update-risk-review-f921
git -C submodules/content-scope-scripts checkout origin/pr-releases/cursor/dependency-update-risk-review-f921

Pin to exact commit

npm (Android / Extension):

npm i github:duckduckgo/content-scope-scripts#beac4c231a4f5699ea5774e6b576860af329a00a

Swift Package Manager (Apple):

.package(url: "https://github.com/duckduckgo/content-scope-scripts.git", revision: "beac4c231a4f5699ea5774e6b576860af329a00a")

git submodule (Windows):

git -C submodules/content-scope-scripts fetch origin pr-releases/cursor/dependency-update-risk-review-f921
git -C submodules/content-scope-scripts checkout beac4c231a4f5699ea5774e6b576860af329a00a

[github-actions]

[Beta] Generated file diff

Time updated: Mon, 27 Jul 2026 11:19:10 GMT