Detect the type of a Liquid object https://shopify.github.io/liquid/basics/types/

detect-type.liquid

{% if object == nil %}
  object is nil
{% elsif object == true or object == false %}
  object is a boolean
{% elsif object.first %}
  object is an array
{% else %}
  {% assign number_test = object | divided_by: 1.0 %}
  {% if object == number_test %}
    object is a number
    {% assign object_string = object | downcase %}
    {% assign number_test_string = number_test | downcase %}
    {% if object_string == number_test_string %}
      number is a float
    {% else %}
      number is an integer
    {% endif %}
  {% else %}
    object is a string
  {% endif %}
{% endif %}