Match object by array keys - Lodash

Question

Hello i have an array of objects that looks like:

[
    {
        "id": "ae588a6b-4540-5714-bfe2-a5c2a65f547b",
        "name": "Peter casa",
        "skills": [
            "javascript",
            "es6",
            "nodejs"
        ]
    },
    {
        "id": "ae588a6b-4540-5714-bfe2-a5c2a65f547a",
        "name": "Peter Coder",
        "skills": [
            "javascript",
            "es6",
            "nodejs",
            "express"
        ]
    }
]

and i'm trying to get the best match based on skills, i'm using lodash and the idea is resolve:

passing "skills": [ "javascript", "es6", "nodejs", "express" ] get "Peter Coder" instead of "Peter casa" because the first one match all the skills in the array given, is there any lodash method to perform this?

Edit:

In this particular example, the function needs to get the candidate with is a better fit, for instance, if i pass skills: "skills": [ "javascript", "es6", "nodejs" ] even if it is a perfect match for the first one i need to choose the second because it matches the skills and has more skills, so is a better match

Answer 1

With lodash you could use intersection as @Tuan Anh Tran suggested:

const users = [
  {
    id: 'ae588a6b-4540-5714-bfe2-a5c2a65f547b',
    name: 'Peter casa',
    skills: ['javascript', 'es6', 'nodejs'],
  },
  {
    id: 'ae588a6b-4540-5714-bfe2-a5c2a65f547a',
    name: 'Peter Coder',
    skills: ['javascript', 'es6', 'nodejs', 'express'],
  },
]

let skillsByUsers = {}
const skills = ['javascript', 'es6', 'nodejs', 'express']

users.map(user => {
    const skillValue = _.intersection(user.skills, skills).length
    skillsByUsersTwo = {
        ...skillsByUsersTwo,
        [user.id]: skillValue
    }
})

Without lodash:

let skillsByUsers = {}
const skills = ['javascript', 'es6', 'nodejs', 'express']

skills.map(skill => {
  users.map(user => {
    if (user.skills.includes(skill)) {
      const userSkillValue = skillsByUsers[user.id] || 0
      skillsByUsers = {
        ...skillsByUsers,
        [user.id]: userSkillValue + 1,
      }
    }
  })
})

they print exactly the same output:

lodash
{
  'ae588a6b-4540-5714-bfe2-a5c2a65f547b': 3,
  'ae588a6b-4540-5714-bfe2-a5c2a65f547a': 4
}

without lodash
{
  'ae588a6b-4540-5714-bfe2-a5c2a65f547b': 3,
  'ae588a6b-4540-5714-bfe2-a5c2a65f547a': 4
}

Answer 2

lodash has a method call intersection https://lodash.com/docs/#intersection

you can pass the array of skill and intersect it with each developer's skill. => get the length of that intersection as score and return the one with highest score.