Run results for: unshift vs realloc vs push vs init

Run details:

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

Browser: Firefox 89

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

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); }