Sourced from autoprefixer's releases.

9.7 "Ad Victoriam"

Brotherhood of Steel coat of arms

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.

Autoprefixer 9.6.5 profiling

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

67417985-a283e180-f5d2-11e9-879a-e364c9acccf1

Other

• Fix Cannot read property 'grid' of undefined error

Sourced from autoprefixer's changelog.

Change Log

This project adheres to Semantic Versioning.

9.7 "Ad Victoriam"

• Add AUTOPREFIXER_GRID env variable to enable Grid Layout polyfill for IE.
• Fix Cannot read property 'grid' of undefined error.

• 22871d1 Release 9.7 version
• ed1cf68 Update PostCSS
• 3f99d30 Fix size limit
• d654c01 Fix env variable nam
• d612e27 Update dependencies
• 994feec Add Node.js 13 to CI
• c3d7206 Fix ESLint path
• cc827ab Fix missed options error
• 3d1d021 Fix ESLint
• 24b9aed Add AUTOPREFIXER_GRID env support
• Additional commits viewable in compare view

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