import { ToastT, ToastToDismiss } from 'sonner';
/**
 * Behaviour shared by `Snackbar` (v1) and `SnackbarV2`.
 *
 * Sonner keeps a single toast store for the whole app, so both containers see
 * every toast regardless of which one created it. Anything that decides the
 * fate of a persistent toast therefore has to behave identically in both, or a
 * v1 container mounted anywhere in the app silently breaks v2's guarantees.
 */
/** Sonner's default visible-stack size (`VISIBLE_TOASTS_AMOUNT`). */
export declare const DEFAULT_VISIBLE_TOASTS = 3;
/**
 * A toast created with `duration: Infinity` never auto-dismisses.
 *
 * `getToasts()` returns live toasts alongside dismissal records, and only the
 * former carry a duration.
 */
export declare const isPersistentToast: (toast: ToastT | ToastToDismiss) => boolean;
/**
 * Dismiss every toast except those explicitly marked persistent with
 * `duration: Infinity`.
 *
 * Calling `sonnerToast.dismiss()` with no arguments dismisses *all* toasts,
 * which silently defeats persistent toasts. Dismissing by id instead keeps the
 * click-away behaviour for ordinary toasts while leaving persistent ones alone.
 */
export declare const dismissNonPersistentToasts: () => void;
/**
 * How many toasts the container should keep visible.
 *
 * Persistent toasts must never be pushed out of the visible stack by newer
 * toasts. Once evicted a toast gets `pointer-events: none`, and because a
 * persistent one also has no timer and is exempt from click-away, eviction
 * would leave it impossible to dismiss by any means.
 *
 * Sonner decides visibility by stack position (`index + 1 <= visibleToasts`)
 * over a newest-first array, so a persistent toast is the *oldest* entry and
 * therefore carries the *highest* index. Adding the persistent *count* to the
 * base is not enough: one persistent toast behind four ordinary ones sits at
 * index 4 while a base of 3 only lifts the ceiling to 4, and it disappears.
 * The ceiling has to clear the deepest persistent toast's index instead.
 */
export declare const useVisibleToastCount: (base?: number) => number;
export declare const SnackbarHiddenToastStyles: () => import("react/jsx-runtime").JSX.Element;