Run results for: spread operator vs filters

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
basic spread	4051.8 Ops/sec
basic filter	135310.6 Ops/sec
filter with conditional	79489.0 Ops/sec

Script Preparation code:

function getSampleItems(numItems) {
    const items = [];
    for (let i = 1; i <= numItems; i++) {
        items.push({ value: i.toString(), label: i.toString() });
      	if(i % 10 === 0){
         items.push({ value: "divider-test-extra-characters"});
        }
    }
    return items;
};

var items = getSampleItems(1000);

Tests:

basic spread
const items2 = {...items};
basic filter
const items2 = items.filter((i) => true);
filter with conditional
const items2 = items.filter((i) => i.value !== "divider-test-extra-characters");

Run results for: spread operator vs filters

basic spread

basic filter

filter with conditional