Benchmark: spread large array (50000 elements) performance (vs slice, splice, concat, for)

Script Preparation code:

testArray = [];
for (let i = 0; i < 50000; i++) testArray.push(i)

Tests:

Splice
const newTestArray = testArray.splice(0);
Slice
const newTestArray = testArray.slice();
Concat
const newTestArray = testArray.concat();
Spread
const newTestArray = [...testArray];
For cycle with preallocation
const testArrLen = testArray.length; const resArr = new Array(testArrLen); for (let i = 0; i < testArrLen; i++) { resArr[i] = testArray[i]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Splice
Slice
Concat
Spread
For cycle with preallocation

Latest run results:

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Related benchmarks:

spread large array (50000 elements) performance (vs slice, splice, concat, for) (version: 0)