1'use strict'; 2 3const common = require('../common.js'); 4const util = require('util'); 5 6const bench = common.createBenchmark(main, { 7 type: ['extend', 'assign'], 8 n: [10e4], 9}); 10 11function main({ n, type }) { 12 let fn; 13 if (type === 'extend') { 14 fn = util._extend; 15 } else if (type === 'assign') { 16 fn = Object.assign; 17 } 18 19 // Force-optimize the method to test so that the benchmark doesn't 20 // get disrupted by the optimizer kicking in halfway through. 21 for (let i = 0; i < type.length * 10; i += 1) 22 fn({}, process.env); 23 24 const obj = new Proxy({}, { set: function(a, b, c) { return true; } }); 25 26 bench.start(); 27 for (let j = 0; j < n; j += 1) 28 fn(obj, process.env); 29 bench.end(n); 30} 31