One module per page: render, event handlers, stream callbacks, and colocated function components.

defmodule MyAppWeb.CounterPage do
  use Dstar.Page

  def mount(conn, _params), do: assign(conn, count: 0)

  def render(assigns) do
    ~H"""
    <div data-signals:count={@count}>
      <button data-on:click={event("increment")}>+1</button>
    </div>
    """
  end

  def handle_event(conn, "increment", signals) do
    patch_signals(conn, %{count: (signals["count"] || 0) + 1})
  end
end

Route it with Dstar.Router.dstar/2:

import Dstar.Router
dstar "/counter", MyAppWeb.CounterPage

All requests are driven by Dstar.Page.Plug — pages contain no control flow, only callbacks. Conn in, conn out.

Options

• :idle_check — ms between connection liveness checks in the stream loop (default 30_000).