Node Base62 libraries: b62 vs. base-x

b62.vs.base-x.js

var baseX = require('base-x')('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
var b62 = require('./b62');

var buf = new Buffer([0x30, 0x17, 0xe8, 0x92, 0xe2, 0x3d, 0xff]);
var str = "Hello World!";
var encodedX, encoded62, decodedX, decoded62, runs=100;

// warm up

console.time('base-x');
for(var i = 0; i < runs; i++){
  encodedX = baseX.encode(buf, 'hex');
  decodedX = baseX.decode(encodedX);
  //console.log('x:', encodedX);
  //console.log('x:', new Buffer(decodedX).toString('hex'));
  encodedX = baseX.encode(new Buffer(str));
  decodedX = baseX.decode(encodedX);
  //console.log('x:', encodedX);
  //console.log('x:', new Buffer(decodedX).toString());
}
console.timeEnd('base-x');

console.time('b62');
for(var i = 0; i < runs; i++){
  encoded62 = b62.encode(buf);
  decoded62 = b62.decode(encoded62, 'hex');
  //console.log('b62:', encoded62);
  //console.log('b62:', decoded62);
  encoded62 = b62.encode(str);
  decoded62 = b62.decode(encoded62);
  //console.log('b62:', encoded62);
  //console.log('x:', 'b62:', decoded62);
}
console.timeEnd('b62');

// Test

console.time('base-x');
for(var i = 0; i < runs; i++){
  encodedX = baseX.encode(buf, 'hex');
  decodedX = baseX.decode(encodedX);
  encodedX = baseX.encode(new Buffer(str));
  decodedX = baseX.decode(encodedX);
}
console.timeEnd('base-x');



console.time('b62');
for(var i = 0; i < runs; i++){
  encoded62 = b62.encode(buf);
  decoded62 = b62.decode(encoded62, 'hex');
  encoded62 = b62.encode(str);
  decoded62 = b62.decode(encoded62);
}
console.timeEnd('b62');



/**
 * Results:
 * base-x: 4ms
 * b62: 113ms
 * base-x: 4ms
 * b62: 83ms
 * 
 * base-x is clearly faster
 * /