Imprime palabras mayores a 3 Vocales.js

// Author: Manel Benlloch - 15/10/2018
// Windows CMD Spanish Configuration, command: chcp 65001
const rl = require("readline-sync");

let palabras = [];
let palabra = "";
let a = 0; let e = 0; let i = 0; let o = 0; let u = 0;
let result = "";
let analytics = "";

do {
    do {
        palabra = rl.question("Introduce una palabra: ").toLocaleLowerCase();
    } while (palabra === "");

    if (palabra === "*") {
        break;
    } else {
        palabras.push(palabra);
    }

} while (true);

/* ARRIBA * PERFECTO */
console.log("\n Las palabras con mas de 3 vocales son: \n ")
for (let value_i = 0; value_i <= palabras.length - 1; value_i++) {
    analytics = palabras[value_i];
    //console.log(palabras[value_i]);


    for (x = 0; x <= analytics.length - 1; x++) {
        if (analytics.charAt(x) === "a") { a = a + 1; }
        if (analytics.charAt(x) === "e") { e = e + 1; }
        if (analytics.charAt(x) === "i") { i = i + 1; }
        if (analytics.charAt(x) === "o") { o = o + 1; }
        if (analytics.charAt(x) === "u") { u = u + 1; }
        //result=;

    }
    if ((a + e + i + o + u) > 2) { console.log("--> "+palabras[value_i]); result = 0; }
    a = 0; e = 0; i = 0; o = 0; u = 0;

}