Date picker component for Funicular.
Use it from an application Gemfile:
group :funicular do
gem "funicular-datepicker"
endcomponent(
Funicular::Plugins::DatePicker::Component,
name: "birthday",
value: state.birthday,
input_class: "birthday-input",
button_class: "birthday-calendar-button",
on_change: ->(value) { patch(birthday: value) }
)