export declare type Matcher = {
    mode: "exact" | "all";
    value: string;
};
export declare type Picker = {
    mode: "random" | "first";
    value: number;
};
export declare type FilterMode = Matcher["mode"] | Picker["mode"];
export declare type Filter = Matcher | Picker;
export declare type Match<T> = {
    values: string[];
    matching: T[];
};
export declare type Filters<T> = {
    [K in keyof T]: Filter;
};
export declare type Matches<T> = {
    [K in keyof T]: Match<T>;
};
export declare function validateFilter(mode: string, value: string): Filter;
export declare function notEmpty<TValue>(value: TValue | null | undefined): value is TValue;
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