Run results for: Check speed of lodash intersection vs custom

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
lodash	400602.2 Ops/sec
sort	434852.7 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

AخA
 
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}

var arr = [];
var arr2 = [];
for(var i = 0; i < 51; i++){
  	arr.push(getRandomInt(100));
    arr2.push(getRandomInt(100));
}

​x
 
function getRandomInt(max) {  return Math.floor(Math.random() * Math.floor(max));}​var arr = [];var arr2 = [];for(var i = 0; i < 51; i++){    arr.push(getRandomInt(100));    arr2.push(getRandomInt(100));}

Tests:

lodash
_.intersection(arr,arr2);
_.intersection(arr,arr2);

sort

var getArrayIntersection = (a, b) => {
  var setA = new Set(a),
    setB = new Set(b);

  var comparator = {
    array: setA,
    set: setB,
  };

  if (setA.size > setB.size) {
    comparator.array = setB;
    comparator.set = setA;
  }

  const intersection = [...comparator.array].filter((el) =>
    comparator.set.has(el),
  );

  return intersection;
};
                                                    
                                                    getArrayIntersection(arr, arr2);

 
var getArrayIntersection = (a, b) => {  var setA = new Set(a),    setB = new Set(b);​  var comparator = {    array: setA,    set: setB,  };​  if (setA.size > setB.size) {    comparator.array = setB;    comparator.set = setA;  }​  const intersection = [...comparator.array].filter((el) =>    comparator.set.has(el),  );​  return intersection;};                                                                                                        getArrayIntersection(arr, arr2);