Simulate mongo findOne with a collection of objects

const HEROES = [
  { id: 1, name: "Captain America", squad: "Avengers" },
  { id: 2, name: "Iron Man", squad: "Avengers" },
  { id: 3, name: "Spiderman", squad: "Avengers" },
  { id: 4, name: "Superman", squad: "Justice League" },
  { id: 5, name: "Wonder Woman", squad: "Justice League" },
  { id: 6, name: "Aquaman", squad: "Justice League" },
  { id: 7, name: "Hulk", squad: "Avengers" },
];

function findOne(collection, query) {
  // Find will return the object that is the first ocurrence
  // when a true value is returned from the callback function
  const result = collection.find((obj) => {
    // Extract the searched keys from the query object
    keys = Object.keys(query);
    // Traverse the keys array, if one of the queried keys
    // is different from the same key in the object, then
    // this is not the object that we are looking for
    for (let i = 0; i < keys.length; i++) {
      if (obj[keys[i]] !== query[keys[i]]) {
        return false;
      }
    }
    return true;
  });
  return result;
}

// Call findOne passing an array and a query, with as many keys
// as we want to match
console.log(findOne(HEROES, { id: 6, squad: "Justice League" }));