Bump tailwindcss from 3.4.18 to 4.2.4

[dependabot]

Bumps tailwindcss from 3.4.18 to 4.2.4.

Release notes

Sourced from tailwindcss's releases.

v4.2.4

Fixed

• Ensure imports in @import and @plugin still resolve correctly when using Vite aliases in @tailwindcss/vite (#19947)

v4.2.3

Fixed

• Canonicalization: improve canonicalizations for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#19846)
• Upgrade: never migrate files that are ignored by git (#19846)
• Add .env and .env.* to default ignored content files (#19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#19858)
• Improve performance when scanning JSONL / NDJSON files (#19862)
• Support NODE_PATH environment variable in standalone CLI (#19617)

v4.2.2

Added

• Support Vite 8 in @tailwindcss/vite (#19790)

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#19725)
• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…) (#19769)
• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border) (#19727)
• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite (#19745)
• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234) (#19809)
• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5) (#19812)

v4.2.1

Fixed

• Allow trailing dash in functional utility names for backwards compatibility (#19696)
• Properly detect classes containing . characters within curly braces in MDX files (#19711)

... (truncated)

Changelog

Sourced from tailwindcss's changelog.

[4.2.4] - 2026-04-21

Fixed

• Ensure imports in @import and @plugin still resolve correctly when using Vite aliases in @tailwindcss/vite (#19947)

[4.2.3] - 2026-04-20

Fixed

• Canonicalization: improve canonicalization for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#19846)
• Upgrade: never migrate files that are ignored by git (#19846)
• Add .env and .env.* to default ignored content files (#19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#19858)
• Improve performance when scanning JSONL / NDJSON files (#19862)
• Support NODE_PATH environment variable in standalone CLI (#19617)

[4.2.2] - 2026-03-18

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#19725)
• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…) (#19769)
• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border) (#19727)
• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite (#19745)
• Add support for Vite 8 in @tailwindcss/vite (#19790)
• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234) (#19809)
• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5) (#19812)
• Resolve tsconfig paths to allow for @import '@/path/to/file'; when using @tailwindcss/vite (#19803)

[4.2.1] - 2026-02-23

Fixed

• Allow trailing dash in functional utility names for backwards compatibility (#19696)

... (truncated)

Commits

• 69ad7cc 4.2.4 (#19948)
• 2e3fa49 4.2.3 (#19944)
• df6209a Canonicalize negative arbitrary values (#19858)
• 52fd421 Small refactor of canonicalization tests (#19851)
• c385fd3 use test.each instead of manual loop
• 0d6e038 fix index in test name
• 88a2d22 Add more canonicalization rules for deprecated utilities (#19849)
• 2c1ef9e Use --placeholder-color instead of --background-color for placeholder-*...
• 28d5268 Collapse more utilities by expanding their declarations (#19842)
• b55d960 fix(canonicalize): collapse arbitrary values into shorthand utilities (#19837)
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by GitHub Actions, a new releaser for tailwindcss since your current version.

[dependabot]

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	tailwindcss@​3.4.18 ⏵ 4.2.4	+5		-2

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[socket-security]

Caution

Review the following alerts detected in dependencies.

According to your organization's Security Policy, you must resolve all "Block" alerts before proceeding. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Block		Embedded URLs or IPs: npm tailwindcss URLs: https://tailwindcss.com/docs/detecting-classes-in-source-files#explicitly-excluding-classes, https://tailwindcss.com/docs/functions-and-directives#reference-directive, https://tailwindcss.com Location: Package overview From: package-lock.json → npm/tailwindcss@4.2.4 ℹ Read more on: This package | This alert | What are URL strings? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Review all remote URLs to ensure they are intentional, pointing to trusted sources, and not being used for data exfiltration or loading untrusted code at runtime. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore npm/tailwindcss@4.2.4. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

View full report

[guibranco]

Automatically approved by gstraccini[bot]

[deepsource-io]

DeepSource Code Review

We reviewed changes in 860e9d9...2fc4ca8 on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

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PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
JavaScript		May 6, 2026 2:53p.m.	Review ↗
Secrets		May 6, 2026 2:53p.m.	Review ↗

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