text: /* @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;
  };
  