TIL you can provide attribute examples and allowed values to your Phoenix Components

When defining your attr you have the following options (among others):

• :examples - a non-exhaustive list of values accepted by the attribute, used for documentation purposes.
• :values - an exhaustive list of values accepted by the attributes. If a caller passes a literal not contained in this list, a compile warning is issued.

attr :attr1, :atom, values: [:foo, :bar, :baz]
attr :attr2, :atom, examples: [:foo, :bar, :baz]
attr :attr3, :list, values: [[60, 40]]
attr :attr4, :list, examples: [[60, 40]]

def fun_attr_values_examples(assigns), do: ~H[]