Benchmark: unshift vs realloc vs push vs init

Tests:

unshift
let arr = []; for(let i = 0; i < 10000; i++) { arr.push(i); } arr.unshift(-1);
realloc
let arr = []; for(let i = 0; i < 10000; i++) { arr.push(i); } arr = [-1,...arr];
push
let arr = []; for(let i = 0; i < 10000; i++) { arr.push(i); } arr = [-1].push(...arr);
init
let arr = [-1]; for(let i = 0; i < 10000; i++) { arr.push(i); }

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0

Browser/OS: Firefox 89 on Linux

unshift vs realloc vs push vs init (version: 0)