1'use strict'; 2const common = require('../common'); 3 4const bench = common.createBenchmark(main, { 5 encoding: ['utf8', 'base64', 'buffer'], 6 len: [2, 16, 256], // x16 7 n: [4e6] 8}); 9 10// 16 chars each 11const chars = [ 12 'hello brendan!!!', // 1 byte 13 'ΰαβγδεζηθικλμνξο', // 2 bytes 14 '挰挱挲挳挴挵挶挷挸挹挺挻挼挽挾挿', // 3 bytes 15 '��������������������������������', // 4 bytes 16]; 17 18function main({ n, len, encoding }) { 19 let strings = []; 20 let results = [len * 16]; 21 if (encoding === 'buffer') { 22 strings = [Buffer.alloc(len * 16, 'a')]; 23 } else { 24 for (const string of chars) { 25 // Strings must be built differently, depending on encoding 26 const data = string.repeat(len); 27 if (encoding === 'utf8') { 28 strings.push(data); 29 } else if (encoding === 'base64') { 30 // Base64 strings will be much longer than their UTF8 counterparts 31 strings.push(Buffer.from(data, 'utf8').toString('base64')); 32 } 33 } 34 35 // Check the result to ensure it is *properly* optimized 36 results = strings.map((val) => Buffer.byteLength(val, encoding)); 37 } 38 39 bench.start(); 40 for (let i = 0; i < n; i++) { 41 const index = n % strings.length; 42 // Go! 43 const r = Buffer.byteLength(strings[index], encoding); 44 45 if (r !== results[index]) 46 throw new Error('incorrect return value'); 47 } 48 bench.end(n); 49} 50