text: 'use strict';
  
  const common = require('../common.js');
  
  const bench = common.createBenchmark(main, {
    encoding: [
      'ascii',
      'ASCII',
      'base64',
      'BASE64',
      'binary',
      'BINARY',
      'hex',
      'HEX',
      'latin1',
      'LATIN1',
      'ucs-2',
      'UCS-2',
      'ucs2',
      'UCS2',
      'utf-16le',
      'UTF-16LE',
      'utf-8',
      'UTF-8',
      'utf16le',
      'UTF16LE',
      'utf8',
      'UTF8',
    ],
    n: [1e6]
  }, {
    flags: ['--expose-internals']
  });
  
  function main({ encoding, n }) {
    const { normalizeEncoding } = require('internal/util');
  
    bench.start();
    for (var i = 0; i < n; i++) {
      normalizeEncoding(encoding);
    }
    bench.end(n);
  }
  