Run results for: Spread in reduce 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
With spread	1324753.9 Ops/sec
Without spread	2292718.2 Ops/sec

Tests:

With spread
const EXCLUDED_FILTERS_FOR_COUNT = [ 'type', 'product', ]; const getMandatoryAndOptionalFilters = ( filters ) => { if (!filters) return {}; return Object.entries(filters).reduce( (acc, [currentFilterKey, currentFilterValue]) => { if ( EXCLUDED_FILTERS_FOR_COUNT.includes(currentFilterKey) ) { return { ...acc, mandatory: { ...(acc.mandatory ?? {}), [currentFilterKey]: currentFilterValue, }, }; } return { ...acc, optional: { ...(acc.optional ?? {}), [currentFilterKey]: currentFilterValue, }, }; }, {} ); }; getMandatoryAndOptionalFilters({ type: "aa", category: "cat1;cat2", paymentType: "payment", otherFilter: "otherFilter" });
Without spread
const EXCLUDED_FILTERS_FOR_COUNT = ["type", "product"]; const getMandatoryAndOptionalFilters = ( filters ) => { if (!filters) return {}; return Object.entries(filters).reduce( (acc, [currentFilterKey, currentFilterValue]) => { if ( EXCLUDED_FILTERS_FOR_COUNT.includes(currentFilterKey) ) { acc.mandatory = { ...(acc.mandatory ?? {}), [currentFilterKey]: currentFilterValue, }; } else { acc.optional = { ...(acc.optional ?? {}), [currentFilterKey]: currentFilterValue, }; } return acc; }, {} ); }; getMandatoryAndOptionalFilters({ type: "aa", category: "cat1;cat2", paymentType: "payment", otherFilter: "otherFilter", });