/**
 * History state interface. This value can be extended via the standard
 * typescript declaration merging mechanism.
 *
 * Use it via {@link getHistoryState}.
 *
 * @see https://www.typescriptlang.org/docs/handbook/declaration-merging.html
 */
export interface HistoryState {
  emailValue?: string;
}

/**
 * Get's window history state with correct typings.
 *
 * Note that this is not a reactive value. It will not trigger re-renders if
 * it is changed.
 */
export function getHistoryState() {
  return window.history.state as HistoryState | null;
}