startPage.ts

startPage.ts

const startPage = computed(() => {
      const floorVal = Math.floor(props.maxVisibleButtons / 2);

      if (
        props.totalPages < props.maxVisibleButtons ||
        props.currentPage === 1 ||
        props.currentPage <= Math.floor(props.maxVisibleButtons / 2) ||
        (props.currentPage + floorVal > props.totalPages &&
          props.totalPages === props.maxVisibleButtons)
      ) {
        return 1;
      }

      if (props.currentPage + floorVal > props.totalPages) {
        return props.totalPages - props.maxVisibleButtons + 1;
      }

      return props.currentPage - floorVal;
    });