Run results for: Map v Object v Set v Array ALL base actions

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

set remove

91.0M/s

map delete

90.5M/s

has Map

722K/s

has set

711K/s

add set

104K/s

add map

82K/s

View exact numbers

Test name	Executions per second
✓ set remove	90,969,112 Ops/sec
map delete	90,548,776 Ops/sec
has Map	721,827 Ops/sec
has set	711,041 Ops/sec
add set	104,172 Ops/sec
add map	81,701 Ops/sec

Script Preparation code:

var map = new Map();
var set = new Set();
var obj = {};
var weakMap = new WeakMap();
var weakSet = new WeakSet();

const arr = Array.from({
    length: 1000
}).map(v => Math.random() * 10000);

var arrString = arr.map(v => String(v) );

var arrObj = arr.map(v => Object.create(Object.prototype, {
  [v]: {value: v}
}));

var arrSymbol = arr.map(v => {
    return Symbol({
        [v]: v
    })
});

var mapPop = new Map(arrObj.map(v => [v, v]))
var setPop = new Set(arrObj);
var emptyMap = new Map();
var emptySet = new Set();
console.log(mapPop)

Tests:

map delete
mapPop.forEach(va => mapPop.delete(va))
set remove
setPop.forEach(va => setPop.delete(va))
add map
arrString.forEach(a => emptyMap.set(a, a))
add set
arrString.forEach(a => emptySet.add(a))
has Map
arrString.forEach(v => emptyMap.has(v))
has set
arrString.forEach(v => emptySet.has(v))