How to use the @material/snackbar/foundation.numbers function in @material/snackbar

MDCSnackbarFoundation.strings.ARIA_LIVE_LABEL_TEXT_ATTR,
        this.labelText,
      );

      setTimeout(() => {
        // Allow screen readers to announce changes to the DOM again.
        ariaEl.setAttribute('aria-live', priority);

        // Remove the message from the ::before pseudo-element.
        labelEl.removeAttribute(
          MDCSnackbarFoundation.strings.ARIA_LIVE_LABEL_TEXT_ATTR,
        );

        // Restore the original label text, which will be announced by screen readers.
        this.showLabelText = true;
      }, MDCSnackbarFoundation.numbers.ARIA_LIVE_DELAY_MS);
    },
  },