Update autoprefixer: 9.6.1 → 9.7.1 (minor)

Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ autoprefixer (9.6.1 → 9.7.1) · Repo · Changelog

Release Notes

9.7.1

Avoid unnecessary transitions in prefixed selectors (by @fanich37).

Fix fit-content for Firefox.

9.7.0

Autoprefixer 9.7 brings AUTOPREFIXER_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:
AUTOPREFIXER_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

9.6.5

Fix selector prefixing (by @fanich37).

9.6.4 (from changelog)

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

9.6.3 (from changelog)

Fix Cannot read property 'startsWith' of undefined error.

9.6.2 (from changelog)

Fix false Replace fill to stretch warning.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 38 commits:

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biotope / biotope-build

Update autoprefixer: 9.6.1 → 9.7.1 (minor) #373