Method safeWriteNavState

core/src/components/router/router.tsx:289–307

(
    node: HTMLElement | undefined,
    chain: RouteChain,
    direction: RouterDirection,
    segments: string[],
    redirectFrom: string[] | null,
    index = 0,
    animation?: AnimationBuilder
  )

  }

  private async safeWriteNavState(
    node: HTMLElement | undefined,
    chain: RouteChain,
    direction: RouterDirection,
    segments: string[],
    redirectFrom: string[] | null,
    index = 0,
    animation?: AnimationBuilder
  ): Promise<boolean> {
    const unlock = await this.lock();
    let changed = false;
    try {
      changed = await this.writeNavState(node, chain, direction, segments, redirectFrom, index, animation);
    } catch (e) {
      printIonError('[ion-router] - Exception in safeWriteNavState:', e);
    }
    unlock();
    return changed;
  }

  private async lock() {
    const p = this.waitPromise;