Run results for: lodash hasIn vs custom hasIn

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lodash hasIn	1803322.8 Ops/sec
custom hasIn	2509567.5 Ops/sec

HTML Preparation code:

<script scr="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>

Script Preparation code:

function hasIn(object, path) {
  if (path in object) {
    return true;
  }

  let ret = false;
  path = path.split('.');
  if (path.length > 1) {
    let obj = object;
    for (const prop of path) {
      ret = prop in obj;
      if (!ret) {
        break;
      }
      obj = obj[prop];
    }
  }
  return ret;
}

var testObject = {
	a: {
    	b: 1,
    },
}

Tests:

lodash hasIn
_.hasIn(testObject, 'a.b')
custom hasIn
hasIn(testObject, 'a.b')