Run results for: set by path recursive vs while loop v1

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
set by path recursive	1341966.1 Ops/sec
set by path while loop	2035603.0 Ops/sec

Script Preparation code:

var user = {
    id: 1,
    email: 'bob@somewhere.com',
    personalInfo: {
        name: 'Robert',
        address: {
            road: 'Quartier Djinageryber',
            city: 'Timbuktu',
            country: 'Mali'
        }
    }
}

function setByPathWhile (keys, value, source) {
  let [currKey, nextKey] = keys
  let node = source
  let i = 1

  while (nextKey !== undefined) {

    if (!node[currKey]) {
      node[currKey] = isNaN(nextKey) ? {} : []
    }

    node = node[currKey]
    currKey = keys[i] 
    nextKey = keys[++i]
  }

  node[currKey] = value

  return source
}

function setByPath ([key, nextKey, ...restOfKeys], value, source) {

  source[key] = (nextKey !== undefined)
    ? setByPath(
      [nextKey, ...restOfKeys],
      value,
      ({}.hasOwnProperty.call(source, key))
      	? source[key]
      	: isNaN(nextKey) ? {} : []
    )
  	: value

  return source
}

Tests:

set by path recursive
setByPath(['personalInfo', 'hobbies', 0], 'jogging', user)
set by path while loop
setByPathWhile(['personalInfo', 'hobbies', 0], 'jogging', user)

Run results for: set by path recursive vs while loop v1

set by path recursive

set by path while loop