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

test/helpers/legacy-safe-area.js

@@ -0,0 +1,17 @@
+// Frozen own-source regression fixture: ccf77c4e packages/artplayer/src/utils/dom.js
+// Function SHA-256: bbf533f90288190b5f058e5dfed1a25856ccfeaf3a3b6aba5d2c7f74ce947bda
+export function getSafeAreaInsets() {
+  const div = document.createElement('div')
+  div.style.cssText
+    = 'position:fixed;top:env(safe-area-inset-top,0px);right:env(safe-area-inset-right,0px);bottom:env(safe-area-inset-bottom,0px);left:env(safe-area-inset-left,0px);pointer-events:none;visibility:hidden;'
+  document.body.appendChild(div)
+  const style = getComputedStyle(div)
+  const insets = {
+    top: Number.parseFloat(style.top) || 0,
+    right: Number.parseFloat(style.right) || 0,
+    bottom: Number.parseFloat(style.bottom) || 0,
+    left: Number.parseFloat(style.left) || 0,
+  }
+  div.remove()
+  return insets
+}