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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser: Chrome 112

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Get string key from map with only string keys	18043844.0 Ops/sec
Get symbol key from map with mixed string and symbol keys	7964398.0 Ops/sec

Script Preparation code:

var eightSymbol = Symbol("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('eight');
Get symbol key from map with mixed string and symbol keys
var value = mapStringAndSymbolKeys.get(eightSymbol);

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

Get string key from map with only string keys

Get symbol key from map with mixed string and symbol keys