refactor(core): [CORE-20] type entry and converge initialization

packages/artplayer/src/dom/event-path.ts

@@ -0,0 +1,22 @@
+interface EventPathSource {
+  target: EventTarget | null
+  composedPath?: () => EventTarget[]
+}
+
+export function getComposedPath(event: EventPathSource): EventTarget[] {
+  if (event.composedPath)
+    return event.composedPath()
+  const path: EventTarget[] = []
+  let node = event.target
+  while (node) {
+    path.push(node)
+    node = (node as EventTarget & { parentNode?: EventTarget | null }).parentNode ?? null
+  }
+  if (typeof window !== 'undefined' && !path.includes(window))
+    path.push(window)
+  return path
+}
+
+export function includeFromEvent(event: EventPathSource, target: EventTarget | null | undefined): boolean {
+  return getComposedPath(event).includes(target as EventTarget)
+}