Run results for: Array.from(iterable) vs [...iterable]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36 OPR/130.0.0.0

Browser: Opera 130

Operating system: Windows

Device Platform: Desktop

Date tested: 5 days ago

arraySpreadSmallArray

71.9M/s

arrayFromSmallArray

71.4M/s

arrayFromSmallSet

50.1M/s

arraySpreadSmallSet

44.7M/s

arrayFromSmallIterable

5.1M/s

arraySpreadSmallIterable

4.7M/s

arraySpreadBigArray

368K/s

arrayFromBigArray

365K/s

arraySpreadBigSet

100K/s

arrayFromBigSet

95K/s

arrayFromBigIterable

8K/s

arraySpreadBigIterable

7K/s

View exact numbers

Test name	Executions per second
✓ arraySpreadSmallArray	71,907,184 Ops/sec
arrayFromSmallArray	71,384,816 Ops/sec
arrayFromSmallSet	50,135,856 Ops/sec
arraySpreadSmallSet	44,734,748 Ops/sec
arrayFromSmallIterable	5,119,009 Ops/sec
arraySpreadSmallIterable	4,747,346 Ops/sec
arraySpreadBigArray	368,439 Ops/sec
arrayFromBigArray	365,213 Ops/sec
arraySpreadBigSet	100,286 Ops/sec
arrayFromBigSet	94,779 Ops/sec
arrayFromBigIterable	7,582 Ops/sec
arraySpreadBigIterable	6,719 Ops/sec

Script Preparation code:

const smallArray = new Array();
const smallSet = new Set();
for (let i = 0; i < 10; ++i) {
	smallArray.push(i);
  smallSet.add(i)
}
const smallIterable = function*() {
  for (let i = 0; i < 10; ++i) {
    yield i;
  }
}

const bigArray = new Array();
const bigSet = new Set();
for (let i = 0; i < 10000; ++i) {
	bigArray.push(i);
  bigSet.add(i)
}
const bigIterable = function*() {
  for (let i = 0; i < 10000; ++i) {
    yield i;
  }
}

Tests:

arrayFromSmallArray
const arrayFromSmallArray = Array.from(smallArray);
arrayFromSmallSet
const arrayFromSmallSet = Array.from(smallSet);
arrayFromSmallIterable
const arrayFromSmallIterable = Array.from(smallIterable());
arraySpreadSmallArray
const arraySpreadSmallArray = [...smallArray];
arraySpreadSmallSet
const arraySpreadSmallSet = [...smallSet];
arraySpreadSmallIterable
const arraySpreadSmallIterable = [...smallIterable()];
arrayFromBigArray
const arrayFromBigArray = Array.from(bigArray);
arrayFromBigSet
const arrayFromBigSet = Array.from(bigSet);
arrayFromBigIterable
const arrayFromBigIterable = Array.from(bigIterable());
arraySpreadBigArray
const arraySpreadBigArray = [...bigArray];
arraySpreadBigSet
const arraySpreadBigSet = [...bigSet];
arraySpreadBigIterable
const arraySpreadBigIterable = [...bigIterable()];