import type { ToastAction, ToastItem } from './types';
/**
 * Reducer for managing toast state
 *
 * Removal is a two-phase flow so web can play its CSS exit transition
 * before the DOM node is unmounted:
 *   `MARK_CLOSED` → flips `pendingRemoval: true` (node stays mounted).
 *   `REMOVE`      → filters the toast out of the array (node unmounts).
 *
 * Native dispatches `REMOVE` directly since Reanimated's `exiting`
 * layout animation plays before unmount without a lingering state.
 */
export declare function toastReducer(state: ToastItem[], action: ToastAction): ToastItem[];
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