/**
 * URL helpers for matching a title/favicon to the visit it belongs to.
 *
 * The document (and therefore its title) is identified by everything up to the
 * fragment: "/page" and "/page#section" are the same document. tab.url often
 * gains a #fragment after load (scroll anchors, in-page nav) while the visit's
 * committed url has none, so we must compare with the fragment stripped or the
 * title silently fails to attach.
 */

export function stripHash(url: string): string {
  const i = url.indexOf("#");
  return i === -1 ? url : url.slice(0, i);
}

export function sameDocument(a: string, b: string): boolean {
  return stripHash(a) === stripHash(b);
}