// GENERATED CONTENT - DO NOT EDIT
// Content of this file was automatically extracted from the
// "Page Visibility Level 2" spec.
// See: https://w3c.github.io/page-visibility/

enum VisibilityState {
  "hidden", "visible", "prerender"
};

partial interface Document {
  readonly attribute boolean hidden;
  readonly attribute VisibilityState visibilityState;
  attribute EventHandler onvisibilitychange;
};