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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_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36
Chrome 93
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
array.unshift(0); 40665.0 Ops/sec
array = [0].concat(array) 1681.6 Ops/sec
[0, ...array] 266.6 Ops/sec
Script Preparation code:
Tests:

  • array.unshift(0);

  • array = [0].concat(array)

  • [0, ...array]

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