Run results for: Map.entries() vs. Map.forEach() vs. Map.keys() + Map.get()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser: Chrome 149

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

entries()

2.7M/s

forEach()

2.4M/s

keys() + get()

2.4M/s

View exact numbers

Test name	Executions per second
✓ entries()	2,734,187 Ops/sec
forEach()	2,446,898 Ops/sec
keys() + get()	2,391,339 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

// Bereite eine globale Test-Map mit 50 Einträgen vor
const LIST_CACHE = new Map();
for (let i = 0; i < 50; i++) {
    const itemMock = { id: `item_${i}`, maxStack: 99, isUnique: false };
    LIST_CACHE.set(itemMock, Math.floor(Math.random() * 10) + 1);
}

// Minimaler Mock für die #has Methode des Inventars (gibt immer true zurück, um reinen Schleifen-Overhead zu messen)
const inventoryMock = {
    has: function(item, count) {
        // Simuliere minimale Logik, damit der JIT die Schleife nicht wegoptimiert
        return item.maxStack > 0 && count > 0;
    }
};

Tests:

entries()
let allItemsMatch = true; for (const [item, count] of LIST_CACHE) { if (!inventoryMock.has(item, count)) { allItemsMatch = false; break; } }
forEach()
let allItemsMatch = true; LIST_CACHE.forEach((count, item) => { if (!allItemsMatch) return; if (!inventoryMock.has(item, count)) { allItemsMatch = false; } });
keys() + get()
let allItemsMatch = true; for (const item of LIST_CACHE.keys()) { if (!inventoryMock.has(item, LIST_CACHE.get(item))) { allItemsMatch = false; break; } }