Function pointers

external/.d3.js:2618–2625

(events, node)

}

function pointers(events, node) {
  if (events.target) { // i.e., instanceof Event, not TouchList or iterable
    events = sourceEvent(events);
    if (node === undefined) node = events.currentTarget;
    events = events.touches || [events];
  }
  return Array.from(events, event => pointer(event, node));
}

function selectAll(selector) {
  return typeof selector === "string"