ascent · v0.5.1

DSL

Elements, attributes, and children compose through one uniform apply. The Arg union auto-lifts: String → text, Squawk[String] → reactive text, attr key + Squawk → reactive attribute, Seq → flattened. Void elements (E.input, E.br) reject children at compile time.

Elements and attrs

E.label(
  A.className("title"),
  A.htmlFor("name"),
  "Name",
)
E.div(
  E.input(A.`type`("text"), A.placeholder("draft")),
  E.br(),
  E.span("after break"),
)

after break

Events

Ev.onClick hands you the typed platform event (dom.PointerEvent). For two-way binding there is the platform-neutral Events.onInput / Events.onKeyDown with targetValue / key. Handlers are ZIO effects. Use .sync (Ev.sync.onDragStart { … }) when the body must run on the dispatch stack (preventDefault, drag-and-drop).

for draft <- sq("")
yield E.input(
  A.value(draft),
  Events.onInput(e => draft.set(e.targetValue.getOrElse(""))),
)

ARIA

E.button(Aria.ariaLabel("Close"), Aria.role("button"), "×")