Benchmarking d3-array.extent against a simple Array.reduce

const Benchmark = require('benchmark'); const suite = new Benchmark.Suite(); const ranger = require('power-ranger'); const data = ranger(1000, () => Math.random()); const d3extent = require('d3-array').extent; const reduceExtent = data => { return data.reduce( (e, d) => [Math.min(e[0], +d), Math.max(e[1], +d)], [Infinity, -Infinity] ); }; suite.add('d3array.extent', function() { d3extent(data); }) .add('reduce', function() { reduceExtent(data); }) // add listeners .on('cycle', function(event) { console.log(String(event.target)); }) .on('complete', function() { console.log('Fastest is ' + this.filter('fastest').map('name')); }) // run async .run({ 'async': true });