Run results for: Sherlock Benchmarks v6

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Vanilla JS	324961.1 Ops/sec
Lodash	16821.6 Ops/sec
for each	334567.0 Ops/sec
for loop	8696.5 Ops/sec
new Set	328159.0 Ops/sec
lodash v2	12778.4 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Faker/3.1.0/faker.min.js"></script>

Script Preparation code:

var vectors = Array.from({
    length: 500
}, () => ({
    name: faker.name.firstName(),
    surname: faker.name.lastName(),
    age: faker.random.number({
        min: 1,
        max: 100
    }),
    country: faker.address.country()
}));

console.log(vectors.slice(0, 10)); // Just to verify by logging the first 10 objects

Tests:

Vanilla JS
const projects = Array.from(new Set( vectors .filter(p => p.country === "India" && p.country !== undefined) .map(p => String(p.country)) ));
Lodash
const uniqueVectors = _.uniqBy(vectors, 'country'); const definedCountries = _.filter(uniqueVectors, p => p.country === "India" && p.country !== undefined); const projects = _.map(definedCountries, p => String(p.country));
for each
const countrySet = new Set(); vectors.forEach(p => { if (p.country === "India" && p.country !== undefined) { countrySet.add(String(p.country)); } }); const projects = Array.from(countrySet);
for loop
const countrySet = new Set(); for (let i = 0; i < vectors.length; i++) { if (vectors[i].country === "India" && vectors[i].country !== undefined) { countrySet.add(String(vectors[i].country)); } } const projects = Array.from(countrySet);
new Set
const countrySet = new Set(); for (let vector of vectors) { if (vector.country === "India" && vector.country !== undefined) { countrySet.add(String(vector.country)); } } const projects = Array.from(countrySet);
lodash v2
const projects = _.chain(vectors) .uniqBy('country') .filter(p => p.country === "India" && p.country !== undefined) .map(p => String(p.country)) .value();

Run results for: Sherlock Benchmarks v6

Vanilla JS

Lodash

for each

for loop

new Set

lodash v2