Run results for: dissoc & dissoc2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0

Browser: Firefox 88

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
dissoc	5026940.0 Ops/sec
dissoc2	691577.8 Ops/sec
dissoc3	806652.6 Ops/sec

Script Preparation code:

function dissoc(map, ...keys) {
 const newMap = Object.keys(map).reduce((accu, key) => {
    if (keys.indexOf(key) < 0) {
      accu[key] = map[key]
      return accu
    }

    return accu
  }, {})

  return newMap
}


function dissoc2(map, ...keys) {
    const newMap = Object.assign({}, map)
    for (const k of keys) {
        delete newMap[k]
    }

    return newMap
}


function dissoc3(map, ...keys) {
    const newMap = Object.assign({}, map)
    keys.forEach((k,i) => {
        delete newMap[k]
    })

    return newMap
}

Tests:

dissoc
dissoc({a:1, b:2, c:3, d:4}, 'a','d')
dissoc2
dissoc2({a:1, b:2, c:3, d:4}, 'a','d')
dissoc3
dissoc3({a:1, b:2, c:3, d:4}, 'a','d')