Trie Algorithm || Auto Complete feature using Javascript

class Node {
    constructor() {
        this.end = false;
        this.children = {}
    }
}

class Trie {
    constructor() {
        this.root = new Node ();
    }

    insert(word) {
        let head = this.root;

        for (let i = 0; i< word.length; i++) {
            if (!head.children[word[i]]) {
                head.children[word[i]] = new Node();
            }
            head = head.children[word[i]];
        }
        head.end = true;
    }

    search(word){
        let current = this.root;

        for (let i = 0; i < word.length; i++) {
            if (!current.children[word[i]]) {
                return false;
            }
            current = current.children[word[i]]
        }

        return true;
    }

    autoComplete(word) {
        let current = this.root;

        for (let i = 0; i< word.length; i++) {
            if (!current.children[word[i]]) {
                return false;
            }
            current = current.children[word[i]];
        }
        if (Object.keys(current.children).length === 1) {
            console.log('Please Type More...');
            return;
        }
        console.log('children =---> ', current.children);

        console.log('Possible Auto Complete Values are --->');
        for (let key in current.children) {
            console.log('---> ', word+key);
        }
    }
}

const test = new Trie();
test.insert('ant');
test.insert('any');
console.log(test.search('ant'));
console.log(test.search('any'));
console.log(test.search('anj'));
test.autoComplete('an')
/*
true
true
false
children =--->  {
  t: Node { end: true, children: {} },
  y: Node { end: true, children: {} }
}
Possible Auto Complete Values are --->
--->  ant
--->  any
*/