Run results for: delete vs spread without vs spread override

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.4

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
delete	6227305.0 Ops/sec
spread without	6227262.0 Ops/sec
spread override	5546292.5 Ops/sec

Script Preparation code:

var query = {
    dates: [],
    latestDate: 'whatever'
};
var query2 = {
    current: {
        query: {
            dates: [1, 2, 3],
            latestDate: 'whatever2'
        }
    }
}

Tests:

delete
let storeQuery = { ...query }; let latestQuery = { ...query2.current?.query }; delete storeQuery.latestDate; delete latestQuery.latestDate;
spread without
const { latestDate: remove, ...storeQuery } = query; const { latestDate: remove1, ...latestQuery } = query2.current?.query || {};
spread override
const storeQuery = { ...query, lastDate: null }; const latestQuery = { ...query2.current?.query, lastDate: null };