Update dependency autoprefixer to v10

This MR contains the following updates:

Package	Type	Update	Change
autoprefixer	devDependencies	major	6.7.7 -> 10.4.8

---

Release Notes

postcss/autoprefixer

v10.4.8

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• Do not print color-adjust warning if print-color-adjust also is in rule.

v10.4.7

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• Fixed print-color-adjust support in Firefox.

v10.4.6

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• Fixed print-color-adjust support.

v10.4.5

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• Fixed NaN in grid (by @​SukkaW).

v10.4.4

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• Fixed package.funding to have same value between all PostCSS packages.

v10.4.3

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• Fixed package.funding (by Álvaro Mondéjar).

v10.4.2

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• Fixed missed -webkit- prefix for width: stretch.

v10.4.1

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• Fixed ::file-selector-button data (by Luke Warlow).

v10.4.0

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In Autoprefixer 10.4 @​lukewarlow added :autofill support:

input:-webkit-autofill {
  background-color: red;
}

input:autofill {
  background-color: red;
}

v10.3.7

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• Replaced nanocolors to picocolors.

v10.3.6

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• Updated nanocolors.
• Reduced package size.

v10.3.5

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• Replaced colorette to nanocolors.

v10.3.4

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• Fixed stretch value in latest Firefox.

v10.3.3

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• Fixed wrong -moz- prefix from ::file-selector-button (by Usman Yunusov).

v10.3.2

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• Fixed ::file-selector-button support (by Usman Yunusov).

v10.3.1

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• Fixed adding wrong prefixes to content (by Luke Warlow).

v10.3.0

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In Autoprefixer 10.3 @​lukewarlow added ::file-selector-button support.

::-webkit-file-upload-button {
  border: 2px solid #​6c5ce7;
  padding: .2em .4em;
  border-radius: .2em;
  background-color: #a29bfe;
}

::file-selector-button {
  border: 2px solid #​6c5ce7;
  padding: .2em .4em;
  border-radius: .2em;
  background-color: #a29bfe;
}

v10.2.6

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• Fixed “no prefixes needed” warning (by @​Pwntheon).

v10.2.5

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• Fixed : support in @supports (by Dmitry Semigradsky).
• Fixed docs (by Christian Oliff).

v10.2.4

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• Fixed browser names in npx autoprefixer --info.

v10.2.3

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• Fixed PostCSS 8 support.

v10.2.2

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• Fixed PostCSS 8 plugins compatibility.

v10.2.1

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• Fixed transition-property warnings (by @​Sheraff).

v10.2.0

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Autoprefixer 10.2 now has built-in TypeScript definitions. You do not need @types/autoprefixer anymore.

Thanks to @​Semigradsky and DefinitelyTyped’s contributors.

@​Sheraff also improved docs.

v10.1.0

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Autoprefixer 10.1 improved min-resolution support.

@​infusion added dpcm unit support and num2fraction with Fraction.js, which uses Farey Sequences as a rational approximation (more precise) and simplifies the fraction using continued fractions to ɛ <0.001 afterward.

/* input */
@​media (min-resolution: 113.38dpcm) {
  …
}

/* output */
@​media (-webkit-min-device-pixel-ratio: 3),
       (min--moz-device-pixel-ratio: 3),
       (-o-min-device-pixel-ratio: 3/1),
       (min-resolution: 113.38dpcm) {
  …
}

v10.0.4

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• Fixed Cannot read property 'proxyOf' of undefined error (by Igor Kamyshev).

v10.0.3

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• Fixed substract to subtract value for mask-composite (by Michelle Enos).

v10.0.2

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• Removed -ms-user-select: all because IE and old Edge don’t support it.
• Fixed Grid Layout warning.

v10.0.1

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• Fix PostCSS 8.1 compatability.
• Add our OpenCollective to package.json.
• Clean up code (by Sukka).

v10.0.0

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Autoprefixer 10 is based on top of PostCSS 8 (check Known Issues section before updating).

Node.js 6.x, 8.x, 11.x support was removed.

Now you need to install Autoprefixer by npm install --save-dev autoprefixer postcss. We moved postcss from dependencies to peerDependencies according to new PostCSS plugin guidelines.

v9.8.8

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• Replaced nanocolors with picocolors.
• Reduced package size.

v9.8.7

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• Replaced colorette with nanocolors.
• Reduced package size.

v9.8.6

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• Fixed env option.

v9.8.5

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• Improved Grid Layout warnings (by Daniel Tonon).
• Fixed align-self and justify-self with display: flex (by Daniel Tonon).

v9.8.4

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• Replace color output library.

v9.8.3

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• Return old non-LTS Node.js versions to avoid breaking changes.

v9.8.2

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• Remove Node.js 13.0-13.7 from supported engines, because of buggy ESM support.

v9.8.1

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• Replace chalk to kleur (by Luke Edwards).
• Update docs (by @​mbomb007).

v9.8.0

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Autoprefixer 9.8 brings IE support for :placeholder-shown.

Placeholder Shown

@​tkrotoff found that input:placeholder-shown can be emulated with input:-ms-input-placeholder.

input:-ms-input-placeholder {
  box-shadow: 0 0 0 1px blue;
}

input:placeholder-shown {
  box-shadow: 0 0 0 1px blue;
}

Note, that we already had support for ::placeholder. Selector ::placeholder is for the text of the placeholder. :placeholder-shown is for the input, where placeholder text is shown. In ::placeholder you can’t change the border or size of the <input>.

v9.7.6

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• Revert -webkit-stretch fix.

v9.7.5

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• Fix -webkit-stretch support.

v9.7.4

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• Fix warning text (by Dmitry Ishkov).

v9.7.3

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• Fix compatibility with PostCSS Modules.

v9.7.2

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• Add -ms-user-select: element support.
• Add funding link for npm fund.

v9.7.1

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• Avoid unnecessary transitions in prefixed selectors (by Andrey Alexandrov).
• Fix fit-content for Firefox.

v9.7.0

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Autoprefixer 9.7 brings AUTOMREFIXER_GRID environment variable and huge performance improvments.

Grid Environment Variable

Autoprefixer can add CSS Grid polyfills for IE. You need to manually enable it to prove that you understand the limits of polyfill.

In previous versions you can enable Grid polyfill by grid: 'autoplace' option or by /* autoprefixer grid: autoplace */ control comment. But in some cases, developers were not able to use both methods. For instance, during work with Material UI’ CSS-in-JS in Create React App.

Now Autoprefixer supports environment variable to enable CSS Grid polyfill:

AUTOMREFIXER_GRID=autoplace npm build

Performance Improvements

@​Knagis found that Browserslist takes 70% of the Autoprefixer time.

We did a lot of improvements in Browserslist and now Autoprefixer should work much faster.

Other

• Fix Cannot read property 'grid' of undefined error

v9.6.5

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• Fix selector prefixing (by Andrey Alexandrov).

v9.6.4

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• Now the real fix for 'startsWith' of undefined error.

v9.6.3

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• Fix Cannot read property 'startsWith' of undefined error.

v9.6.2

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• Fix false Replace fill to stretch warning.

v9.6.1

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• Fix -webkit-line-clamp truncating multi-line text support.

v9.6.0

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Autoprefixer 9.6 marked browsers option as deprecated and added text-orientation and @media (min-resolution: 2x) support.

We added the “Sponsor” button to your repository. You can support Autoprefixer and other open source projects important for your business by Tidelift.

Browsers

Autoprefixer adds prefixes only for target browsers, browsers which is support on your project.

Initially, Autoprefixer had the browsers option to set target browsers. But we found that many tools need target browsers too. postcss-preset-env and babel-preset-env use them to add only actual polyfills, postcss-normalize uses them to add only necessary CSS reset rules, plugins for ESLint and Stylelint will warn you if some of the target browsers doesn’t support your code.

This is why we created Browserslist config file. It is a single config for all tools.

A lot of users still uses the browsers option. We understand them; it is hard to change old practice. Unfortunately, using the browsers option creates many problems. For instance, you can miss that your build tool has own Autoprefixer inside. It will cut your prefixes because it will not know about your target browsers.

This is why, in 9.6, we decided to deprecate the browsers option. Autoprefixer will show a warning on this option. In the next 10.0 release, we will drop this option. This is how you can migrate:

1. Create browserslist key with an array in package.json.

2. Copy queries from the browsers option. If you have browsers: [“last 1 version”, “not dead”], then you need:

      "browserslist": [
        "last 1 version",
        "not dead"
      ]

HiDPI Media Query

We all need to support HiDPI/retina screen now. Autoprefixer supports specific media query for HiDPI screens:

.image {
  background-image: url(image@1x.png);
}
@​media (min-resolution: 2dppx) {
  .image {
    background-image: url(image@2x.png);
  }
}

.image {
  background-image: url(image@1x.png);
}
@​media (-webkit-min-device-pixel-ratio: 2),
       (-o-min-device-pixel-ratio: 2/1),
       (min-resolution: 2dppx) {
  .image {
    background-image: url(image@2x.png);
  }
}

Bug we found that CSS Values 4 spec added x alias for dppx.

Autoprefixer 9.6 supports @media (min-resolution: 2x) shortcut. Note, that Autoprefixer will not convert it to 2dppx. Autoprefixer adds only prefixes. Use postcss-preset-env to add polyfills.

Other

• text-orientation property support was added.
• @​jmmarco added CONTRIBUTING.md

v9.5.1

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• Fix backdrop-filter for Edge (by Oleh Aloshkin).
• Fix min-resolution media query support in Firefox < 16.

v9.5.0

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Autoprefixer 9.5 brings mask-composite support.

a {
  mask-composite: add;
}
b {
  mask: url(intersect.png) intersect, url(exclude.png);
}

a {
  -webkit-mask-composite: source-over;
          mask-composite: add;
}
b {
  -webkit-mask: url(intersect.png), url(exclude.png);
  -webkit-mask-composite: source-in, xor;
          mask: url(intersect.png) intersect, url(exclude.png);
}

Thanks to @​semeleven for implementation and @​iamvdo for suggestion.

v9.4.10

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• Add warning for named Grid rows.

v9.4.9

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• Fix grid-template and @media case (by Bogdan Dolin).

v9.4.8

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• Fix calc() support in Grid gap.

v9.4.7

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• Fix infinite loop on mismatched parens.

v9.4.6

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• Fix warning text (by Albert Juhé Lluveras).

v9.4.5

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• Fix text-decoration-skip-ink support.

v9.4.4

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• Use direction value for -ms-writing-mode (by Denys Kniazevych).
• Fix warning text (by @​zzzzBov).

v9.4.3

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• Add warning to force flex-start instead of start (by Antoine du Hamel).
• Fix docs (by Christian Oliff).

v9.4.2

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• Fix Grid autoplacement warning.

v9.4.1

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• Add warning for named Grid rows.

v9.4.0

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Autoprefixer 9.4.0 brings limited autoplacement support to the IE CSS Grid.

Grid Autoplacement

If the grid option is set to "autoplace", limited autoplacement support is now added to the Autoprefixer CSS Grid translations. You can also use the /* autoprefixer grid: autoplace */ control comment to enable autoplacement directly in your CSS.

In order to use the new autoplacement feature, you must define both rows and columns when declaring the grid template.

/* Input CSS */

/* autoprefixer grid: autoplace */

.autoplacement-example {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    grid-gap: 20px;
}

/* Output CSS */

/* autoprefixer grid: autoplace */

.autoplacement-example {
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: 1fr 20px 1fr;
  grid-template-columns: 1fr 1fr;
  -ms-grid-rows: auto 20px auto;
  grid-template-rows: auto auto;
  grid-gap: 20px;
}

.autoplacement-example > *:nth-child(1) {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
}

.autoplacement-example > *:nth-child(2) {
  -ms-grid-row: 1;
  -ms-grid-column: 3;
}

.autoplacement-example > *:nth-child(3) {
  -ms-grid-row: 3;
  -ms-grid-column: 1;
}

.autoplacement-example > *:nth-child(4) {
  -ms-grid-row: 3;
  -ms-grid-column: 3;
}

Autoplacement support in Autoprefixer is currently very limited in what it can do. Please read the Grid Autoplacement support in IE section before using this new feature.

Thanks to @​bogdan0083 for implementing the new feature, @​Dan503 for documenting it, and @​evandiamond for coming up with the initial idea.

Other Changes

• Remove some unnecessary warnings for Grid (by @​fanich37).

v9.3.1

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• Fix Grid prefixes with repeat() value (by Bogdan Dolin).

v9.3.0

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Autoprefixer 9.3 brings place-self support for Grid Layout

place-self

@​Dan503 and @​bogdan0083 found a way to impement support for another Grid property

.grid > .center {
  place-self: center;
}

.grid > .center {
  -ms-grid-row-align: center;
  -ms-grid-column-align: center;
  place-self: center;
}

Other Changes

@​Dan503 and @​bogdan0083 also detected and fixed issue with Grid row/column span inheritance.

v9.2.1

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• Fix broken AST.

v9.2.0

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Autoprefixer 9.2 brings many new improvements for -ms- prefixes for Grid Layout.

New Ways to Enable/Disable Grid Layout

In previous versions, you had needed to pass grid: true to enable prefixes for Grid Layout. But not all users have access to Autoprefixer options. CodePen, Create Reat App or Angular CLI doesn’t allow you to do it.

In Autoprefixer 9.2 @​fanich37 added special control comments:

/* autoprefixer grid: on */
.grid {
    display: grid;
    grid-gap: 33px;
    grid-template:
        "head head  head" 1fr
        "nav  main  main" minmax(100px, 1fr)
        "nav  foot  foot" 2fr /
        1fr   100px 1fr;
}

.non-ie .grid {
    /* autoprefixer grid: off */
    …
}

Autoprefixer doesn’t support Grid properties and values with auto. In 9.2 it will ignore whole @supports content if it contains these Grid properties:

@​supports (grid-auto-rows: 100px) {
    /* Autoprefixer will not show Grid warnings and will not add prefixes here */
}

Smarter grid-area

Autoprefixer supports grid-template even if it was not in IE Grid spec.

But in 9.2 @​bogdan0083 really improve it according to @​Dan503 idea. Now Autoprefixer supports even overriding grid-template.

/* autoprefixer grid: on */
.grid {
    display: grid;
    grid-template:
        "nav  main" minmax(100px, 1fr)
        "nav  foot" 2fr /
        100px 1fr;
}

.grid.no-menu {
    grid-template:
        "main" minmax(100px, 1fr)
        "foot" 2fr
}

Other Changes

• Improve Grid warnings (by @​Dan503 and @​bogdan0083)
• Improve docs (by @​JoshuaHall, @​Drarok, @​revelt, and @​janczer).

v9.1.5

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• Remove @babel/register from dependencies.

v9.1.4

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• Use Babel 7.

v9.1.3

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• Sort properties in autoprefixer --info alphabetically.
• Fix old Firefox gradient prefix.

v9.1.2

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• Fix autoprefixer --info in new Node.js.

v9.1.1

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• Retain grid-gap through @media (by Bogdan Dolin).
• Fix grid-template and @media (by Bogdan Dolin).
• Fix Grid areas searching error (by Bogdan Dolin).
• Fix span X Grid prefix (by Bogdan Dolin).
• Fix docs (by Eduard Kyvenko).

v9.1.0

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Autoprefixer 9.1 brings background-clip: text and fix span in IE Grid.

Background Clip

background-clip: text become to be the standard and got Edge support. So we added it to Autoprefixer:

.title {
  background: linear-gradient(yellow, red);
   -webkit-background-clip: text;
           background-clip: text;
}

Note, that Edge expect -webkit- prefix for this property.

Grid Layout Fix

@​bogdan0083 fixed an issue when media-query override some grid-template.

v9.0.2

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• Show warning on Grid area names conflict (by Bogdan Dolin).
• Fix documentation (by Sven Wagner).

v9.0.1

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• Fix nested at-rules in Grid prefixes (by Ivan Malov).

v9.0.0

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Autoprefixer 9.0 brings Browserslist 4.0 and drops Node.js 4 support.

Breaking Changes

We removed Node.js 4 and Node.js 9 support since it doesn’t have security updates anymore.

We removed IE and “dead” browsers (without security updates) from Babel’s targets. Don't worry, Autoprefixer still generate IE-compatible code. These changes affect websites which run Autoprefixer on client-side like CodePen.

last 2 version
not dead
not Explorer 11
not ExplorerMobile 11
node 10
node 8
node 6

Autoprefixer Rails 9.0 dropped the RubyRacer and Sprockets 3 support.

Browserslist 4.0

Autoprefixer 9.0 uses Browserslist 4.0 to get your target browsers.

Now you use Browserslist to specify Node.js versions. Babel 7 will use Browserslist config as well.

Also, Browserslist 4.0 will warn you if you didn’t update Can I Use DB for last than 6 month.

PostCSS 7.0

Autoprefixer 9.0 uses PostCSS 7.0

v8.6.5

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• Do not show Grid warnings if IE was not selected.

v8.6.4

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• Fix stretch prefix in Chrome >= 46.

v8.6.3

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• Add warnings for unsupported Grid features.
• Add warnings about wrong Grid properties.
• Add note about grid option for grid properties in autoprefixer --info.

v8.6.2

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• Fix error during adding Grid prefixes in @media (by Evgeny Petukhov).

v8.6.1

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• Fix grid-template with media queries (by Evgeny Petukhov).

v8.6.0

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Autoprefixer 8.6 brings gap property support and two values support for grid-gap/gap.

Grid Gap

CSSWG renamed grid-gap property to gap.

@​yepninja added gap support with 2 values support.

Grid layout code bellow will work even in IE if you pass grid: true option to Autoprefixer:

.main {
    gap: 10px 20px;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-areas: "head head head"
                         "nav main main"
                         "nav foot foot";
}

Other Changes

• Add ignoreUnknownVersions option for Browserslist

v8.5.2

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• Fix grid-template support wit auto row sizes (by Yury Timofeev).

v8.5.1

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• Remove unnecessary warning on -webkit-fill-available.

v8.5.0

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Autoprefixer 8.5 brings grid-gap support and fix radial-gradient.

Grid Gap

@​yepninja continues his amazing work of adding CSS Grid Layout support to Autoprefixer.

Now he brought grid-gap. It is amazing work since IE 11 has gaps support in -ms- grids.

To add grid-gap support for IE 11 Autoprefixer adds addition grid cells. Unfortunately, it will work only if you have grid-template in the same rule with grid-gap. We had big discussion with a community about these limits.

.page {
    grid-gap: 33px;
    -ms-grid-rows: 1fr 33px minmax(100px, 1fr) 33px 2fr;
    -ms-grid-columns: 1fr 33px 100px 33px 1fr;
    grid-template:
        "head head  head" 1fr
        "nav  main  main" minmax(100px, 1fr)
        "nav  foot  foot" 2fr /
        1fr   100px 1fr;
}

Set postcss-gap-properties before Autoprefixer if you want to use new gap property.

Radial Gradients

Old gradients with prefixes used a different direction syntax. Autoprefixer converts direction to old syntax (or warn you to rewrite direction from old to new syntax).

But it has an issue with extent keywords like circle closest-corner. We fixed it after @​BaliBalo report.

.mask {
    -webkit-mask-image: -webkit-radial-gradient(100% 50%, circle closest-corner, black, white);
            mask-image: radial-gradient(circle closest-corner at 100% 50%, black, white);
}

v8.4.1

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• Fix working in old PostCSS versions (by Diablohu).

v8.4.0

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Autoprefixer 8.4 brings new control comment to ignore next line.

@​vostrik implemented the @​levin-du’s idea of having control comment to disable only next property/rule:

.logo {
    /* autoprefixer: ignore next */
    user-select: none; /* ← ignored */
    mask: url(mask.jpg); /* ← will be prefixed */
}

/* autoprefixer: ignore next */
::placholder /* ← ignored */ {
    text-decoration-style: dotted; /* ← will be prefixed */
}

v8.3.0

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Autoprefixer 8.3 adds @media support for grid-template and fixes gradient direction warning.

Media and Grid Layout

@​evgeny-petukhov continues his great work for Grid Layout support in Autoprefixer.

Now he improved @media support. Now this CSS will work in IE:

body {
    grid-template:
        [header-left] "head head" 30px [header-right]
        [main-left]   "nav  main" 1fr  [main-right]
        [footer-left] "nav  foot" 30px [footer-right]
        / 120px repeat(4, 250px 10px);
}

header {
    grid-area: head;
}

main {
    grid-area: main;
}

footer {
    grid-area: footer;
}

@​media (min-width: 1000px) {
    body {
        grid-template:
            [header-left] "head" 30px [header-right]
            [main-left]   "main" 1fr  [main-right]
            [footer-left] "footer" 30px [footer-right]
            / 1fr;
    }
}

Don’t forget that Autoprefixer inserts Grid Layout prefixes only if you set grid: true option.

Gradient Warning

@​radium-v found that Autoprefixer show warning even if cover is outside of radial-gradient.

a {
    background: radial-gradient(#fff, transparent) 0 0 / cover no-repeat #f0f;
}

@​kotfire improve old direction detection and fix this issue.

v8.2.0

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Autoprefixer 8.2 brings color-adjust support.

@​YozhikM, @​soul-wish, and @​yuriyalekseyev did a great work. They added new data to Can I Use and implemented a new feature to Autoprefixer.

body {
    -webkit-print-color-adjust: exact;
            color-adjust: exact;
}

v8.1.0

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Autoprefixer 8.1 brings overscroll-behavior and better Grid support.

Overscroll Behavior

@​Malvoz suggested the great idea to polyfill overscroll-behavior for IE 11 and Edge by -ms-scroll-chaining.

.none {
    -ms-scroll-chaining: none;
        overscroll-behavior: none;
}
.contain {
    -ms-scroll-chaining: none;
        overscroll-behavior: contain;
}
.auto {
    -ms-scroll-chaining: chained;
        overscroll-behavior: auto;
}

Note, that overscroll-behavior-x and overscroll-behavior-y are not supported since -ms- property doesn’t have this freedom.

Better Grid Layout

@​evgeny-petukhov continues his amazing work and now Autoprefixer polyfills Grid Layout for IE in more cases.

He added grid-template shortcut support and improve support of grid-column-end and grid-row-end.

Grid properties were fixed in @supports. We recommend:

• To select modern Grid browsers and IE 11: @supports (display: grid).
• To select only Grid browsers without IE 11: @supports (grid-gap: 0).

Note, that you need grid: true option to Autoprefixer to add -ms- prefixes for Grid Layout.

v8.0.0

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Autoprefixer 8.0 uses Browserslist 3.0, has autoprefixer CLI tool instead of autoprefixer-info.

Browserslist 3.0

The main feature of Autoprefixer 8.0 is Browserslist 3.0. In the new version, it brings new default browsers. It will affect you only if you don’t change browsers by .browserslistrc or browserslist key in package.json (we don’t recommend to use browsers option).

In one hand, Browserslist 3.0 usage statistics limit for default browsers was reduced from >1% to >0.5%. In another hand, we remove dead browsers from default browsers. The dead browser is a browser with < than 1% in the global market and who don’t have security updates. Right now IE 10 and BlackBerry browser are dead browsers.

Read other notable changes in Browserslist 3.0 changelog. We recommend subscribing for @​Browserslist twitter account.

CLI Tool

CLI tool to show target browsers and used prefixes was renamed to autoprefixer:

$ npx autoprefixer --info
Browsers:
  Edge: 16

These browsers account for 0.04% of all users globally

At-Rules:
  @​viewport: ms

Selectors:
  ::placeholder: ms

Properties:
  user-select: ms
  hyphens: ms
  appearance: webkit
  scroll-snap-type: ms
  scroll-snap-coordinate: ms
  scroll-snap-destination: ms
  scroll-snap-points-x: ms
  scroll-snap-points-y: ms
  flow-into: ms
  flow-from: ms
  region-fragment: ms
  text-spacing: ms

With the new name, npx will install Autoprefixer automatically if it is missed in the current project.

Page Breaks for Firefox

Previous Autoprefixer versions replace break-* properties to page-break-* for Firefox.

But this feature didn’t add any vendor prefix. Autoprefixer goal is to take care only about prefixes, not polyfills. For better consistency, we removed this feature from Autoprefixer.

Don’t afraid, the PostCSS ecosystem has many plugins for CSS polyfills. We recommend to take look at postcss-preset-env to write future CSS today.

v7.2.6

Compare Source

• Fix -ms- prefix for grid cells with same grid-area (by Evgeny Petukhov).

v7.2.5

Compare Source

• Fix multiple prefixes in declaration value.

v7.2.4

Compare Source

• Fix IE 10 support.

v7.2.3

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• Fix grid-template-areas in @media (by Evgeny Petukhov).

v7.2.2

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• Fix _autoprefixerDisabled is undefined issue.

v7.2.1

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• Fix IE and other old JS runtimes support.

v7.2.0

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Autoprefixer 7.2 brings better Grid support for IE
and autoprefixer-info CLI tool.

Grid Layout

With grid: true option Autoprefixer adds -ms- prefixes to Grid Layout properties. But this feature was very limited.

In 7.0 we dramatically improved Grid support for IE. @​Alex7Kom added grid-area and improved grid-row and grid-column support. @​evgeny-petukhov added grid-template-areas and grid-template support.

Even this complex emoji example will work with new Autoprefixer (output):

body {
    display: grid;
    grid-template-rows: 30px auto 30px;
    grid-template-columns: 1fr 3fr;
    grid-template-areas: "🎩 🎩"
                         "🍔 📰"
                         "👞 👞";
}
.header {
    grid-area: 🎩;
}
.nav {
    grid-area: 🍔;
}
.main {
    grid-area: 📰;
}
.footer {
    grid-area: 👞;
}

Just don’t forget to set grid: true option:

auoprefixer({ grid: true })

Info CLI Tool

Autoprefixer 7.2 ships with new CLI tool to check which browsers are selected and which properties will be prefixed.

Just go to your project directory and run npx autoprefixer-info:

Browsers:
  Edge: 16

These browsers account for 0.04% of all users globally

At-Rules:
  @​viewport: ms

Selectors:
  ::placeholder: ms

Properties:
  user-select: ms
  hyphens: ms
  appearance: webkit
  scroll-snap-type: ms
  scroll-snap-coordinate: ms
  scroll-snap-destination: ms
  scroll-snap-points-x: ms
  scroll-snap-points-y: ms
  flow-into: ms
  flow-from: ms
  region-fragment: ms
  text-spacing: ms

Also, @​pdokas added default value (current working dir) for from option in autoprefixer.info().

Other Changes

• Add wrong radial-gradient properties warning.
• Do not prefix reverse animation direction.
• Improve test coverage (by @​Semigradsky).

v7.1.6

Compare Source

• Add warning for using browserslist option instead of browsers.
• Add warning for multiple control comments in the same scope.
• Fix Invalid array length error during indent changes.

v7.1.5

Compare Source

• Fix ::placeholder prefix for Edge.
• Fix inherit/initial/unset values for flex-direction.
• Fix RegExp usage in gradients (by Yet Another Minion).

v7.1.4

Compare Source

• Fix radial-gradient direction conversion.
• Fix image-set in cursor.

v7.1.3

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• Add warning for old radial-gradient direction syntax.

v7.1.2

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• Fix text-decoration shortcut support.

v7.1.1

Compare Source

• Remove non--webkit- intrinsic prefixes in Grid Layout (by 一丝).

v7.1.0

Compare Source

Autoprefixer 7.1 brings unicode-bidi support, -webkit-appearance to Edge and fix intrinsic widths prefixes in Grid Layout.

unicode-bidi

Autoprefixer 7.1 will add prefixes for isolate, plaintext and isolate-override values in unicode-bidi:

.foo {
  unicode-bidi: -webkit-isolate;
  unicode-bidi: isolate;
}

Edge and -webkit-appearance

Prefixes sometime could be very strange. Edge started to support appearance property with a prefix. But because of many only-for-Safari websites it supports -webkit-appearance instead of -ms-appearance.

Autoprefixer 7.1 knows it and will generate -webkit-appearance even if you set only "last 1 Edge version" in browserslist config.

Intrinsic Widths

min-content, stretch and other Intrinsic sizes was fixed in grid-template-columns and other Grid Layout properties.

.foo {
  grid-template-columns: minmax(100px, -webkit-min-content);
  grid-template-columns: minmax(100px, min-content);
}

Browserslist in info()

By accident Browserslist 1 loaded config from current working dir if file path was missed. In Browserslist 2 we fixed it and now you must specify path to file in explicit way.

It is not a problem for Autoprefixer user, because Autoprefixer takes CSS file path from PostCSS. But autoprefixer.info() stopped to load conifg in 7.0. In 7.1 we added from option to info().

Set the path to your CSS file and info() will show what prefixes and why it will added to this CSS file:

autoprefixer.info({ from: './scr/app.css' })
//=> Browsers:
//     Chrome: 58
//
//   These browsers account for 1.68% of all users globally
//
//   Selectors:
//     :fullscreen: webkit
//   …

v7.0.1

Compare Source

• Fix Autoprefixer for old JS runtimes.

v7.0.0

Compare Source

Autoprefixer 7.0 uses PostCSS 6.0, Browserslist 2.0 and caniuse-lite.

Browserslist 2.0

Browserslist 2.0 and caniuse-lite by @​ben-eb are the main changes in Autoprefixer 7.0. We wrote an article about these changes:

> Autoprefixer 7.0 and Browserslist 2.0

Breaking Changes

Node.js stopped 0.12 support in January 01. So PostCSS dropped Node.js 0.12 from all tests. Please update your Node.js version to 4.0 or 7.0.

IE has very basic support of Grid Layout. So Autoprefixer added -ms- prefixes and change property syntax. Unfortunately, IE supports a really small subset of Grid Layout. So prefixes were not really useful. This is why we disabled Grid Layout prefixes by default. But you still can enable it:

autoprefixer({ grid: true })

Babel

Autoprefixer was one of the biggest CoffeeScript projects. We thought to rewrite it, but reasons were small, and work was big. But @​Semigradsky used great decaffeinate tool for automatically CoffeeScript → ES6 converting, and now all Autoprefixer sources are written in JS.

PostCSS 6.0

New PostCSS uses stream parser and uses less memory. Also, it uses less space in node_modules.

Other Changes

• Use ^ for Browserslist dependencies, instead of ~.
• Fix -ms-grid-column-align.
• Move tests to Jest.

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