stylelint/lib/utils/isStandardSyntaxSelector.js

A mighty, modern CSS linter.

/* @flow */
'use strict';

const hasInterpolation = require('../utils/hasInterpolation');

/**
 * Check whether a selector is standard
 */
module.exports = function(selector /*: string*/) /*: boolean*/ {
	// SCSS or Less interpolation
	if (hasInterpolation(selector)) {
		return false;
	}

	// SCSS placeholder selectors
	if (selector.indexOf('%') === 0) {
		return false;
	}

	// Less :extend()
	if (/:extend(\(.*?\))?/.test(selector)) {
		return false;
	}

	// Less mixin with resolved nested selectors (e.g. .foo().bar or .foo(@a, @b)[bar])
	if (/\.[a-z0-9-_]+\(.*\).+/i.test(selector)) {
		return false;
	}

	return true;
};