Here is everything you need to know about this upgrade. Please take a
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### What changed?
#### ✳️ globby (14.1.0 → 15.0.0) ·
[Repo](https://github.com/sindresorhus/globby)
<details>
<summary>Release Notes</summary>
<h4><a
href="https://github.com/sindresorhus/globby/releases/tag/v15.0.0">15.0.0</a></h4>
<blockquote><h3 dir="auto">Breaking</h3>
<ul dir="auto">
<li>Require Node.js 20 <a
href="4ae42c8bbd"><tt>4ae42c8</tt></a>
</li>
</ul>
<h3 dir="auto">Fixes</h3>
<ul dir="auto">
<li>Fix <code class="notranslate">expandDirectories</code> not working
with globstar patterns <a
href="98d691ad73"><tt>98d691a</tt></a>
</li>
<li>Fix relative paths with gitignore option <a
href="b4d78d8039"><tt>b4d78d8</tt></a>
</li>
<li>Fix gitignore patterns in subdirectories not applying recursively <a
href="2cb6088a0a"><tt>2cb6088</tt></a>
</li>
<li>Fix TypeScript types for <code
class="notranslate">globbyStream</code> to correctly yield strings <a
href="1c7f3ed116"><tt>1c7f3ed</tt></a>
</li>
</ul>
<hr>
<p dir="auto"><a
href="https://bounce.depfu.com/github.com/sindresorhus/globby/compare/v14.1.0...v15.0.0"><tt>v14.1.0...v15.0.0</tt></a></p></blockquote>
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the full diff on Github</a>. The new version differs by 7 commits:</p>
<ul>
<li><a
href="b65747ec17"><code>15.0.0</code></a></li>
<li><a
href="4ae42c8bbd"><code>Require
Node.js 20</code></a></li>
<li><a
href="98d691ad73"><code>Fix
`expandDirectories` not working with globstar patterns</code></a></li>
<li><a
href="b4d78d8039"><code>Fix
relative paths with gitignore option</code></a></li>
<li><a
href="2cb6088a0a"><code>Fix
gitignore patterns in subdirectories not applying
recursively</code></a></li>
<li><a
href="0a4df0eeed"><code>Document
performance implications of `gitignore` option</code></a></li>
<li><a
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TypeScript types for `globbyStream` to correctly yield
strings</code></a></li>
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### What changed?
#### ✳️ dedent (1.6.0 → 1.7.0) · [Repo](https://github.com/dmnd/dedent)
· [Changelog](https://github.com/dmnd/dedent/blob/main/CHANGELOG.md)
<details>
<summary>Release Notes</summary>
<h4><a
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<blockquote><h2 dir="auto">What's Changed</h2>
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<li>feat: add alignValues option by <a
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in <a
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<p dir="auto"><strong>Full Changelog</strong>: <a
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(#103)</code></a></li>
<li><a
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### What changed?
#### ✳️ enhanced-resolve (5.18.2 → 5.18.3) ·
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<details>
<summary>Release Notes</summary>
<h4><a
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### What changed?
#### ✳️ enhanced-resolve (5.18.1 → 5.18.2) ·
[Repo](https://github.com/webpack/enhanced-resolve)
<details>
<summary>Release Notes</summary>
<h4><a
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fix</code></a></li>
<li><a
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fix small stuff</code></a></li>
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refactor dev env</code></a></li>
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node v24</code></a></li>
<li><a
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node v24</code></a></li>
<li><a
href="38e9fd9acb"><code>feat:
export `SyncFileSystem` and `BaseFileSystem` types</code></a></li>
<li><a
href="3c9d4b6d51"><code>chore:
fix generation</code></a></li>
<li><a
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export type SyncFileSystem and type BaseFileSystem</code></a></li>
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### What changed?
#### ✳️ postcss-import (16.1.0 → 16.1.1) ·
[Repo](https://github.com/postcss/postcss-import) ·
[Changelog](https://github.com/postcss/postcss-import/blob/master/CHANGELOG.md)
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### What changed?
#### ✳️ dedent (1.5.3 → 1.6.0) · [Repo](https://github.com/dmnd/dedent)
· [Changelog](https://github.com/dmnd/dedent/blob/main/CHANGELOG.md)
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This PR ensures that the `@tailwindcss/upgrade` tool works on existing
Tailwind CSS v4 projects. This PR also ensures that the upgrade tool is
idempotent, meaning that it can be run multiple times and it should
result in the same output.
One awesome feature this unlocks is that you can run the upgrade tool on
your codebase at any time and upgrade classes if you still have some
legacy syntaxes, such as `bg-[var(--my-color)]`, in your muscle memory.
One small note: If something changed in the first run, re-running will
not work immediately because your git repository will not be clean and
the upgrade tool requires your git repo to be clean. But once you
verified and committed your changes, the upgrade tool will be
idempotent.
Idempotency is guaranteed by ensuring that some migrations are skipped
by checking what version of Tailwind CSS you are on _before_ the version
is upgraded.
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know the _actual_ version that is installed (the one resolved from
`node_modules`). Not the one available in your package.json. Your
`package.json` could be out of sync if you reverted changes but didn't
run `npm install` yet.
Back to Idempotency:
For example, we have migrations where we change the variant order of
stacked variants. If we would run these migrations every time you run
the upgrade tool then we would be flip-flopping the order every run.
See: https://tailwindcss.com/docs/upgrade-guide#variant-stacking-order
Another example is where we rename some utilities. For example, we
rename:
| Before | After |
| ----------- | ----------- |
| `shadow` | `shadow-sm` |
| `shadow-sm` | `shadow-xs` |
Notice how we have `shadow-sm` in both the `before` and `after` column.
If we would run the upgrade tool again, then we would eventually migrate
your original `shadow` to `shadow-sm` (first run) and then to
`shadow-xs` (second run). Which would result in the wrong shadow.
See: https://tailwindcss.com/docs/upgrade-guide#renamed-utilities
---
The order of upgrade steps changed a bit as well to make the internals
are easier to work with and reason about.
1. Find CSS files
2. Link JS config files (if you are in a Tailwind CSS v3 project)
3. Migrate the JS config files (if you are in a Tailwind CSS v3 project)
4. Upgrade Tailwind CSS to v4 (or the latest version at that point)
5. Migrate the stylesheets (we used to migrate the source files first)
6. Migrate the source files
This is done so that step 5 and 6 will always operate on a Tailwind CSS
v4 project and we don't need to check the version number again. This is
also necessary because your CSS file will now very likely contain
`@import "tailwindcss";` which doesn't exist in Tailwind CSS v3.
This also means that we can rely on the same internals that Tailwind CSS
actually uses for locating the source files. We will use
`@tailwindcss/oxide`'s scanner to find the source files (and it also
keeps your custom `@source` directives into account).
This PR also introduces a few actual migrations related to recent
features and changes we shipped.
1. We migrate deprecated classes to their new names:
| Before | After |
| --------------------- | --------------------- |
| `bg-left-top` | `bg-top-left` |
| `bg-left-bottom` | `bg-bottom-left` |
| `bg-right-top` | `bg-top-right` |
| `bg-right-bottom` | `bg-bottom-right` |
| `object-left-top` | `object-top-left` |
| `object-left-bottom` | `object-bottom-left` |
| `object-right-top` | `object-top-right` |
| `object-right-bottom` | `object-bottom-right` |
Introduced in:
- https://github.com/tailwindlabs/tailwindcss/pull/17378
- https://github.com/tailwindlabs/tailwindcss/pull/17437
2. We migrate simple arbitrary variants to their dedicated variant:
| Before | After |
| ----------------------- | ------------------- |
| `[&:user-valid]:flex` | `user-valid:flex` |
| `[&:user-invalid]:flex` | `user-invalid:flex` |
Introduced in:
- https://github.com/tailwindlabs/tailwindcss/pull/12370
3. We migrate `@media` variants to their dedicated variant:
| Before | After |
| ----------------------------------------------------- |
------------------------- |
| `[@media_print]:flex` | `print:flex` |
| `[@media(prefers-reduced-motion:no-preference)]:flex` |
`motion-safe:flex` |
| `[@media(prefers-reduced-motion:reduce)]:flex` | `motion-reduce:flex`
|
| `[@media(prefers-contrast:more)]:flex` | `contrast-more:flex` |
| `[@media(prefers-contrast:less)]:flex` | `contrast-less:flex` |
| `[@media(orientation:portrait)]:flex` | `portrait:flex` |
| `[@media(orientation:landscape)]:flex` | `landscape:flex` |
| `[@media(forced-colors:active)]:flex` | `forced-colors:flex` |
| `[@media(inverted-colors:inverted)]:flex` | `inverted-colors:flex` |
| `[@media(pointer:none)]:flex` | `pointer-none:flex` |
| `[@media(pointer:coarse)]:flex` | `pointer-coarse:flex` |
| `[@media(pointer:fine)]:flex` | `pointer-fine:flex` |
| `[@media(any-pointer:none)]:flex` | `any-pointer-none:flex` |
| `[@media(any-pointer:coarse)]:flex` | `any-pointer-coarse:flex` |
| `[@media(any-pointer:fine)]:flex` | `any-pointer-fine:flex` |
| `[@media(scripting:none)]:flex` | `noscript:flex` |
The new variants related to `inverted-colors`, `pointer`, `any-pointer`
and `scripting` were introduced in:
- https://github.com/tailwindlabs/tailwindcss/pull/11693
- https://github.com/tailwindlabs/tailwindcss/pull/16946
- https://github.com/tailwindlabs/tailwindcss/pull/11929
- https://github.com/tailwindlabs/tailwindcss/pull/17431
This also applies to the `not` case, e.g.:
| Before | After |
| --------------------------------------------------------- |
----------------------------- |
| `[@media_not_print]:flex` | `not-print:flex` |
| `[@media_not(prefers-reduced-motion:no-preference)]:flex` |
`not-motion-safe:flex` |
| `[@media_not(prefers-reduced-motion:reduce)]:flex` |
`not-motion-reduce:flex` |
| `[@media_not(prefers-contrast:more)]:flex` | `not-contrast-more:flex`
|
| `[@media_not(prefers-contrast:less)]:flex` | `not-contrast-less:flex`
|
| `[@media_not(orientation:portrait)]:flex` | `not-portrait:flex` |
| `[@media_not(orientation:landscape)]:flex` | `not-landscape:flex` |
| `[@media_not(forced-colors:active)]:flex` | `not-forced-colors:flex` |
| `[@media_not(inverted-colors:inverted)]:flex` |
`not-inverted-colors:flex` |
| `[@media_not(pointer:none)]:flex` | `not-pointer-none:flex` |
| `[@media_not(pointer:coarse)]:flex` | `not-pointer-coarse:flex` |
| `[@media_not(pointer:fine)]:flex` | `not-pointer-fine:flex` |
| `[@media_not(any-pointer:none)]:flex` | `not-any-pointer-none:flex` |
| `[@media_not(any-pointer:coarse)]:flex` |
`not-any-pointer-coarse:flex` |
| `[@media_not(any-pointer:fine)]:flex` | `not-any-pointer-fine:flex` |
| `[@media_not(scripting:none)]:flex` | `not-noscript:flex` |
For each candidate, we run a set of upgrade migrations. If at the end of
the migrations the original candidate is still the same as the new
candidate, then we will parse & print the candidate one more time to
pretty print into consistent classes. Luckily parsing is cached so there
is no real downside overhead.
Consistency (especially with arbitrary variants and values) will reduce
your CSS file because there will be fewer "versions" of your class.
Concretely, the pretty printing will apply changes such as:
| Before | After |
| ---------------------- | ----------------- |
| `bg-[var(--my-color)]` | `bg-(--my-color)` |
| `bg-[rgb(0,_0,_0)]` | `bg-[rgb(0,0,0)]` |
Another big important reason for this change is that these classes on
their own
would have been migrated _if_ another migration was relevant for this
candidate.
This means that there are were some inconsistencies. E.g.:
| Before | After | Reason |
| ----------------------- | ---------------------- |
------------------------------------ |
| `!bg-[var(--my-color)]` | `bg-(--my-color)!` | Because the `!` is in
the wrong spot |
| `bg-[var(--my-color)]` | `bg-[var(--my-color)]` | Because no
migrations rand |
As you can see, the way the `--my-color` variable is used, is different.
This
changes will make sure it will now always be consistent:
| Before | After |
| ----------------------- | ---------------------- |
| `!bg-[var(--my-color)]` | `bg-(--my-color)!` |
| `bg-[var(--my-color)]` | `bg-(--my-color)` |
Yay!
Of course, if you don't want these more cosmetic changes, you can always
ignore the upgrade and revert these changes and only commit the changes
you want.
# Test plan
- All existing tests still pass.
- But I had to delete 1 test (we tested that Tailwind CSS v3 was
required).
- And had to mock the `version.isMajor` call to ensure we run the
individual migration tests correctly.
- Added new tests to test:
1. Migrating Tailwind CSS v4 projects works
1. Idempotency of the upgrade tool
[ci-all]
Prepare the 4.0.16 release.
~~Also added a commit to mark the `--value('…')` and `--modifier('…')`
with literals strings as an experimental feature (aka not shipped in
this PR). But we can revert that commit if we still want to ship it in
4.0.16 instead of 4.1.~~
---------
Co-authored-by: Philipp Spiess <hello@philippspiess.com>
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---------
Co-authored-by: Adam Wathan <adam.wathan@gmail.com>
This PR fixes an issue where installing a specific version of
`@tailwindcss/postcss` and `tailwindcss` could still result in a version
mismatch. This is because we were relying on `^4.0.6` for example
instead of `4.0.6`.
This PR now pins all these versions to prevent this:
```
❯ pnpm why tailwindcss
devDependencies:
@tailwindcss/postcss 4.0.5
├─┬ @tailwindcss/node 4.0.6
│ └── tailwindcss 4.0.6
└── tailwindcss 4.0.5
```
This PR bumps the Prettier dependencies, and also pins the version.
Noticed that a PR with a single empty commit started failing at the time
of writing this
(https://github.com/tailwindlabs/tailwindcss/pull/16306). This is
because prettier released a new minor version which results in slightly
different output.
Let's bump prettier and handle the differences, but also pin the version
to avoid this in the future.
<!--
👋 Hey, thanks for your interest in contributing to Tailwind!
**Please ask first before starting work on any significant new
features.**
It's never a fun experience to have your pull request declined after
investing a lot of time and effort into a new feature. To avoid this
from happening, we request that contributors create an issue to first
discuss any significant new features. This includes things like adding
new utilities, creating new at-rules, or adding new component examples
to the documentation.
https://github.com/tailwindcss/tailwindcss/blob/master/.github/CONTRIBUTING.md
-->
---------
Co-authored-by: Adam Wathan <4323180+adamwathan@users.noreply.github.com>
