export type OptionGroup<T> = {
    key: string;
    label: string;
    options: T[];
};
export type Option = {
    key: string;
    label: string;
};
export declare const ALL_KEY = "all";
export declare const isAllOption: (option: Option | null | undefined) => boolean;
export declare const getIsOptionSelected: <T extends Option>(selectedOptions: T[], option: T) => boolean;
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