spread vs unshift

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Testing in
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spread operator
const arr1 = [0,1,2,3,4];
const arr2 = [5,6,7,8,9];
const arr3 = [...arr1, ...arr2];
ready
unshift
const arr1 = [0,1,2,3,4];
const arr2 = [5,6,7,8,9];
arr2.unshift(...arr1);
ready

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