Benchmark: new Array from vs slice vs push vs index vs spread vs unshift

Script Preparation code:

const elements = Array.from({length: 1000}).map(Math.random);

Tests:

Array.from
const arr = Array.from(elements);
Array.slice
const arr = Array.prototype.slice.call(elements, 0);
Array.push
const amount = elements.length; const arr = []; for (let i = 0; i < amount; i += 1) arr.push(elements[i]);
Array[index]
const amount = elements.length; const arr = Array(amount); for (let i = 0; i < amount; i += 1) arr[i] = elements[i];
Array spread
const arr = [...elements];
Array[index] reverse
const amount = elements.length; const arr = Array(amount); for (let i = amount - 1; i >= 0; --i) arr[i] = elements[i];

Rendered benchmark preparation results:

Previous results

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new Array from vs slice vs push vs index vs spread vs unshift (version: 0)