Object Perf Testing

Results

▸ node ~/Desktop/testbed.js
Completed test 1 in 26950ms
Completed test 2 in 14ms

testbed.js

function test1() {
  let a = {};

  for (let i = 0; i < 10000; i++) {
    a = {
      ...a,
      [`thing-${i}`]: 'hi'
    };
  }
}

function test2() {
  const a = {};

  for (let i = 0; i < 10000; i++) {
    a[`thing-${i}`] = 'hi';
  }
}

const s1 = Date.now();
test1();
console.log(`Completed test 1 in ${Date.now() - s1}ms`);

const s2 = Date.now();
test2();
console.log(`Completed test 2 in ${Date.now() - s2}ms`);