JavaScript array returns deepEqual

I want to return an array

function estanParaTrasplantar(alturasDePlantas) {
  let plantasMayoresA20Cm = [];
  for (let planta of alturasDePlantas) {
    if (planta.altura > 20) {
      agregar(plantasMayoresA20Cm, planta);
    }
  }
  return plantasMayoresA20Cm;
}

When I run [21, 29, 5, 20] I get this output

[] deepEqual [ 21, 29 ]

How can I return the array without the deepEqual stuff? Thanks

>Solution :

Instead of using agregar, filter out numbers greater than 20

function estanParaTrasplantar(alturasDePlantas) {
  return alturasDePlantas.filter(x => x > 20)
}

Note

for of will pick some weird array prototype values hence the weird things you’re getting.