category_complex.js

var results = [
    {
      "id": 3,
      "soft_delete": false,
      "name": "Bebidas frias",
      "order": 1,
      "menu": 1,
      "sub_category": 2
    },
    {
      "id": 1,
      "soft_delete": false,
      "name": "Pastas",
      "order": 1,
      "menu": 1,
      "sub_category": null
    },
    {
      "id": 2,
      "soft_delete": false,
      "name": "Bebidas",
      "order": 3,
      "menu": 1,
      "sub_category": null
    },
    {
      "id": 4,
      "soft_delete": false,
      "name": "Cocteles",
      "order": 1,
      "menu": 1,
      "sub_category": 3
    },
  ]
  // Agregar subcategorias
  results = results.filter( result => {
    result.subs = results.filter(f => f.sub_category == result.id )
    return result
  })
  // Excluir del padre
  results = results.filter( result => !result.sub_category )