text: 'use strict';
  
  module.exports = function function_exists(funcName) {
    // eslint-disable-line camelcase
    //  discuss at: http://locutus.io/php/function_exists/
    // original by: Kevin van Zonneveld (http://kvz.io)
    // improved by: Steve Clay
    // improved by: Legaev Andrey
    // improved by: Brett Zamir (http://brett-zamir.me)
    //   example 1: function_exists('isFinite')
    //   returns 1: true
    //        test: skip-1
  
    var $global = typeof window !== 'undefined' ? window : global;
  
    if (typeof funcName === 'string') {
      funcName = $global[funcName];
    }
  
    return typeof funcName === 'function';
  };
  //# sourceMappingURL=function_exists.js.map