Nested array not resolved correctly

[bigopon]

test:

var json = {
  "tags": ["cold", "ice", ["fire", "water"]]
};
var prettyHtml = require('json-pretty-html').default;
var html = prettyHtml(json, json.dimensions);

{
  "tags": [
    "cold",
    "ice",
    {
      "0": "fire",
      "1": "water"
    }
  ]
}