Run results for: lodash omit vs spread omit using babel

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko

Browser: IE 11

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
lodash omit	317615.4 Ops/sec
spread as compiled by babel	517509.5 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

lodash omit
const a = { aa: 'oh', bb: 'my' }; const b = _.omit(a, 'aa');
spread as compiled by babel
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; } function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; } var a = { aa: 'oh', bb: 'my' }; var aa = a.aa, b = _objectWithoutProperties(a, ["aa"]);