node_modules/stylus/lib/functions/extname.js


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var utils = require('../utils')
  , path = require('path');

/**
 * Return the extname of `path`.
 *
 * @param {String} path
 * @return {String}
 * @api public
 */

module.exports = function extname(p){
  utils.assertString(p, 'path');
  return path.extname(p.val);
};