Super simple array of object search without referencing keys

simple-object-search.js

// https://github.com/RajikaKeminda/multi-search/blob/main/index.js
// https://multi-search.vercel.app/
// https://codesandbox.io/s/upbeat-goldberg-mzvzqz?from-embed=&file=/src/App.js

function singleKeyFilter(list, query, key) {
    let querySanitizer = String(query).trim().toLowerCase();
    return list.filter(
        (i) => String(i[key]).toLowerCase().indexOf(querySanitizer) > -1
    );
}

export default function multiSearch(list, query) {
    if (Array.isArray(list) && list.length > 0) {
        let searchList = [];
        for (let [key] of Object.entries(list[0])) searchList = [...searchList, singleKeyFilter(list, query, key)];
        let set = new Set(searchList.flat());
        return [...set];
    }
    return [];
}

usage.js

import search from 'multi-search'

let list = [
  { name: 'Madara Uchiha', age: 25, clan: 'Uchiha Clan' },
  { name: 'Kakashi Hatake', age: 26, clan: 'Hatake Clan' },
  { name: 'Tsunade', age: 45, clan: 'Senju Clan' },
  { name: 'Naruto Uzumaki', age: 18, clan: 'Uzumaki Clan' },
  { name: 'Sakura Haruno', age: 18, clan: 'Uchiha Clan' },
];

console.log(search(list, 45)); // [{ name: 'Tsunade', age: 45, clan: 'Senju Clan' }]

console.log(search(list, 'kakashi')); // [{ name: 'Kakashi Hatake', age: 26, clan: 'Hatake Clan' }]

console.log(search(list, 18)); 
//[
// { name: 'Naruto Uzumaki', age: 18, clan: 'Uzumaki Clan' },
// { name: 'Sakura Haruno', age: 18, clan: 'Uchiha Clan' }
//]