Benchmark: flatMap vs reduce vs loop performance

Script Preparation code:

var arr = Array.from({length:100000}, (v, i) => ({name: i, shouldNotBeFiltered: i % 2 === 0));

Tests:

flatMap
arr.flatMap(({ name, isFiltered }) => (shouldNotBeFiltered ? [name] : []));
reduce
arr.reduce((acc, { name, shouldNotBeFiltered }) => { if (shouldNotBeFiltered) { const elementToPush = name; acc.push(elementToPush); } return shippingAddresses; }, []);
loop
const result = []; for (const { name, shouldNotBeFiltered } of arr) { if (shouldNotBeFiltered) { result.push(name); } }

Rendered benchmark preparation results:

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flatMap vs reduce vs loop performance (version: 0)