Run results for: es6 map access with string vs symbol keys 12

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 19_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 19.0

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

Get string key from map with only string keys

525.5M/s

Get symbol key from map with mixed string and symbol keys

506.7M/s

View exact numbers

Test name	Executions per second
✓ Get string key from map with only string keys	525,480,096 Ops/sec
Get symbol key from map with mixed string and symbol keys	506,702,720 Ops/sec

Script Preparation code:

var eightSymbol = Symbol("eight")
var eightString = "eight";

var mapStringKeys = new Map([["one", true], ["two", true], ["three", true], ["four", true], ["five", true], ["six", true], ["seven", true], ["eight", true], ["nine", true], ["ten", true]]);
var mapStringAndSymbolKeys = new Map([["one", true], [Symbol("two"), true], ["three", true], [Symbol("four"), true], ["five", true], [Symbol("six"), true], ["seven", true], [eightSymbol, true], ["nine", true], [Symbol("ten"), true]]);

Tests:

Get string key from map with only string keys
var value = mapStringKeys.get(eightString);
Get symbol key from map with mixed string and symbol keys
var value = mapStringAndSymbolKeys.get(eightSymbol);