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Run results for: 2unshift vs2 spread vs concat

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:92.0) Gecko/20100101 Firefox/92.0
Firefox 92
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
array.unshift(0); 440535.5 Ops/sec
array = [0].concat(array) 67.6 Ops/sec
[0, ...array] 43.9 Ops/sec
Script Preparation code:
Tests:

  • array.unshift(0);

  • array = [0].concat(array)

  • [0, ...array]

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