Recursive List with depth count

Question

I created a code to organize a recursive list of categories to print as follows:

• category 1
• -- category 1.1

• category 2
• -- category 2.2
• --- category 2.2.1

json file of data :

const data = {
  "categorias": [
    {
      "id": "6e1ffe88-1ad4-441e-9992-869b81002888",
      "categoria_id": null,
      "titulo": "Identidade",     
    },
    {
      "id": "f30aebbd-b6c4-4aab-bf2d-2a7acad5857d",
      "categoria_id": "6e1ffe88-1ad4-441e-9992-869b81002888",
      "titulo": "1ª Via",

    },
    {
      "id": "f30d418c-f506-472f-8121-17f15e0f9fed",
      "categoria_id": "6e1ffe88-1ad4-441e-9992-869b81002888",
      "titulo": "2ª Via",      
    },
    {
      "id": "8be426c6-3f54-42aa-a775-ea61241f2553",
      "categoria_id": "f30aebbd-b6c4-4aab-bf2d-2a7acad5857d",
      "titulo": "Brasileiro Nato",
     
    },
    {
      "id": "d0c2289d-abbf-44b3-9852-edd170761aa3",
      "categoria_id": "8be426c6-3f54-42aa-a775-ea61241f2553",
      "titulo": "Até 15 anos",
     
    },
    {
      "id": "f1b132f4-3565-44b9-ae1e-ca28a139ee92",
      "categoria_id": "f30d418c-f506-472f-8121-17f15e0f9fed",
      "titulo": "Brasileiro Nato",
     
    },
    {
      "id": "69e0be42-c767-4427-9b94-994fa01ca042",
      "categoria_id": "f1b132f4-3565-44b9-ae1e-ca28a139ee92",
      "titulo": "Até 15 anos",
     
    }
  ]
}

The function below returns the organization I want;

function getNestedChildren(
      arr: Categoria[],
      parent: string | null,
      prof: number,
    ) {
      const out = [];
      let cont = prof;
      cont += 1;

      for (const i in arr) {
        if (arr[i].categoria_id === parent) {
          const subcategorias = getNestedChildren(arr, arr[i].id, cont);
          const categorias = arr;
          if (cont > 0) {
            let c = 0;
            while (c < cont) {
              categorias[i].titulo = `---${categorias[i].titulo}`;

              c += 1;
            }
          }

          out.push(arr[i]);
          if (subcategorias.length) {
            subcategorias.forEach(subc => {
              out.push(subc);
            });
          }
        }
      }

      return out;
      
    }

    const lista = getNestedChildren(data.categorias, null, -1);
    return lista;
  }

I would like to have ideas on how to improve the code javascript/typescript using map and filter as the Eslint is accusing error in this code.