Benchmark: Add item to array: push vs spread vs assign vs items.length

Script Preparation code:

window.MAX_SIZE = 1000;

Tests:

Push item to an array
const items = []; for (let i = 0; i < MAX_SIZE; i++) { items.push(i); }
Append an item by spread
let items = []; for (let i = 0; i < MAX_SIZE; i++) { items = [...items, i]; }
Direct assign an item to an initialized array
const items = new Array(MAX_SIZE); for (let i = 0; i < MAX_SIZE; i++) { items[i] = i; }
items[items.length]
const items = []; for (let i = 0; i < MAX_SIZE; i++) { items[items.length] = i; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Push item to an array
Append an item by spread
Direct assign an item to an initialized array
items[items.length]

Latest run results:

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Add item to array: push vs spread vs assign vs items.length (version: 1)