Automatically append content property for viewport-units-buggyfill.
$ npm install postcss-viewport-unitsSee PostCSS usage section for detail.
onlyCalc([Boolean]): if ture, only process calc values. it's false by default, which means, all values including vw vh vmin vmax are processed.
test([Function]): used to judge whether current value of declaration should be considered including viewport units, the default is value => /\d(vw|vh|vmax|vmin)\b/.test(value).
filterFile([Function]): used to filter out files which need be processed, you can refer to test case to see how it works.
filterRule([Function]): used to filter out rules which need be processed, you can refer to test case to see how it works.
silence([Boolean]): if true, will not print warning even though there is a content property. it's false by default.
MIT.