Feature: Global variables

[juanca]

No description provided.

[juanca]

juanca@steyr design-system % yarn lint:styles
yarn run v1.17.3
$ stylelint '**/*.css'
TypeError: Cannot read property 'globals' of undefined
    at /Users/juanca/workspace/design-system/node_modules/stylelint-css-modules/rules/css-variables.js:46:44
    at performRules.push.Promise.all.postcssRoots.map (/Users/juanca/workspace/design-system/node_modules/stylelint/lib/lintPostcssResult.js:118:8)
    at Array.map (<anonymous>)
    at rules.forEach (/Users/juanca/workspace/design-system/node_modules/stylelint/lib/lintPostcssResult.js:110:18)
    at Array.forEach (<anonymous>)
    at lintPostcssResult (/Users/juanca/workspace/design-system/node_modules/stylelint/lib/lintPostcssResult.js:74:8)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.