Run results for: spread operator vs...

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
spread	18451570.0 Ops/sec
lodash	4043407.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4/lodash.min.js"></script>

Script Preparation code:

function translateBySpread (a) {
  const b = {
    ...(a.id ? { id: a.id } : {}),
    ...(a.foo ? { foo: a.foo} : {})
  }
  return b;
}

function translateByLodash (a) {
  const b = {
    id: a.id || null,
    foo: a.foo || null
  }
  return _.pickBy(b, !_.isNull);
}

Tests:

spread
translateBySpread({ id: '12345', type: 'article' });
lodash
translateByLodash({ id: '12345', type: 'article' });