Run results for: Reduce vs Filter/Map vs Map/Filteraaaaa

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 OPR/89.0.4447.48

Browser: Opera 89

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Reduce	0.0 Ops/sec
Filter/Map	0.0 Ops/sec
Map/Filter	945114752.0 Ops/sec

Script Preparation code:

const a = { 
    "l63yslms": {
        "id": "l63yslms",
        "value": "o",
        "name": "one",
        "description": "o",
        "url": [
            "o"
        ],
        "lastModifiedAt": 1658947984956
    },
    "l63yupx0aasssa": {
        "id": "l63yupx0",
        "value": "s",
        "name": "two",
        "description": "s",
        "url": [
            "o"
        ],
        "lastModifiedAt": 1658948082168
    },
    "l6asssa": {
        "id": "l63yupx0",
        "value": "s",
        "name": "two",
        "description": "s",
        "url": [
            "o"
        ],
        "lastModifiedAt": 1658948082168
    },
    "l63yupx0ssaasssa": {
        "id": "l63yupx0",
        "value": "s",
        "name": "two",
        "description": "s",
        "url": [
            "o"
        ],
        "lastModifiedAt": 1658948082168
    },
    "l63yupx0aaa": {
        "id": "l63yupx0",
        "value": "s",
        "name": "two",
        "description": "s",
        "url": [
            "o"
        ],
        "lastModifiedAt": 1658948082168
    }
  ,
    "l63yupx0sss": {
        "id": "l63yupx0",
        "value": "s",
        "name": "thre",
        "description": "s",
        "url": [
            "p"
        ],
        "lastModifiedAt": 1658948082168
    }
}

Tests:

Reduce
const newObj = Object.values(a).reduce((newObj, val) => { if (val.url.includes('o')) { newObj.push(val.name) } return newObj; },[])
Filter/Map
const b = Object.values(a).filter(val => val.url.includes('o')).map(obj => obj.name)
Map/Filter
const c = ()=>{ let duplicates= []; Object.keys(a).map((key) => { if (a[key].url.includes('o')) { duplicates.push(a[key].name); } }); return duplicates ; }