import type { SnackbarItem } from '../types';
export type SnackbarState = {
    snackbars: SnackbarItem[];
    snackbarsToClose: Set<string>;
};
export declare const addSnackbarToState: (state: SnackbarState, snackbar: SnackbarItem) => SnackbarState;
export declare const removeSnackbarFromState: (state: SnackbarState, id: string) => SnackbarState;
export declare const updateSnackbarPropsInState: (state: SnackbarState, id: string, config: Partial<SnackbarItem["snackbarProps"]>) => SnackbarState;
export declare const closeSnackbarInState: (state: SnackbarState, id: string) => SnackbarState;
export declare const closeAllSnackbarsInState: (state: SnackbarState, showedSnackbars: Set<string>) => SnackbarState;
export declare const closeOverflowedSnackbarsInState: (state: SnackbarState, placementSnackbars: SnackbarItem[]) => SnackbarState;
//# sourceMappingURL=snackbarStateHelpers.d.ts.map