Reversed console tree

// *********** n
//  *********  n - 2
//   *******   n - 4
//     ***     n - 8
//      *      n - 10

let treeHeight = 10;
treeHeight *= 2;

for (let troncoL = 0; troncoL < 3; troncoL++) {
  let tronco = "";
  for (let t = 0; t < treeHeight / 2 - 1; t++) tronco += " ";
  tronco += "*";
  console.log(tronco);
}

for(let i = treeHeight; i > 0; i -= 2) {
    let s = "";
    for(let j = 0; j < (treeHeight - i) / 2; j++ ) {
        s += " ";
    }

    for(let j = 0; j < i - 1; j++) {
        s += "*";
    }
    console.log(s);
}