postcss-css-variables/lib/is-piece-always-ancestor-selector.js

PostCSS plugin to transform CSS Custom Properties(CSS variables) syntax into a static representation

var alwaysAncestorSelector = {
	'*': true,
	':root': true,
	'html': true
};

// This means it will be always be an ancestor of any other selector
var isPieceIsAlwaysAncestorSelector = function(piece) {
	return !!alwaysAncestorSelector[piece];
};

module.exports = isPieceIsAlwaysAncestorSelector;