text: 'use strict';
  var common = require('../common');
  
  var bench = common.createBenchmark(main, {
    encoding: ['utf8', 'base64'],
    len: [1, 2, 4, 16, 64, 256], // x16
    n: [5e6]
  });
  
  // 16 chars each
  var chars = [
    'hello brendan!!!', // 1 byte
    'ΰαβγδεζηθικλμνξο', // 2 bytes
    '挰挱挲挳挴挵挶挷挸挹挺挻挼挽挾挿', // 3 bytes
    '𠜎𠜱𠝹𠱓𠱸𠲖𠳏𠳕𠴕𠵼𠵿𠸎𠸏𠹷𠺝𠺢' // 4 bytes
  ];
  
  function main(conf) {
    var n = conf.n | 0;
    var len = conf.len | 0;
    var encoding = conf.encoding;
  
    var strings = [];
    for (var string of chars) {
      // Strings must be built differently, depending on encoding
      var data = buildString(string, len);
      if (encoding === 'utf8') {
        strings.push(data);
      } else if (encoding === 'base64') {
        // Base64 strings will be much longer than their UTF8 counterparts
        strings.push(Buffer.from(data, 'utf8').toString('base64'));
      }
    }
  
    // Check the result to ensure it is *properly* optimized
    var results = strings.map(function(val) {
      return Buffer.byteLength(val, encoding);
    });
  
    bench.start();
    for (var i = 0; i < n; i++) {
      var index = n % strings.length;
      // Go!
      var r = Buffer.byteLength(strings[index], encoding);
  
      if (r !== results[index])
        throw new Error('incorrect return value');
    }
    bench.end(n);
  }
  
  function buildString(str, times) {
    if (times === 1) return str;
  
    return str + buildString(str, times - 1);
  }
  