export declare const extract: (obj: {
    [key: string]: any;
}, key: string) => {
    [key: string]: any;
};
export declare const pick: (obj: {
    [key: string]: any;
}, keys: string[]) => {
    [key: string]: any;
};
export declare const empty: (input: null | undefined | string) => boolean;
export declare const pluck: (list: {
    [key: string]: any;
}[], key: string) => any[];
export declare function i18n(key: string, nameArgs?: {
    [key: string]: any;
}): string;
export declare function km(input: number): string;
export declare function processInBatches<T>(items: T[], processItem: (item: T, index: number) => void, batchSize?: number): Promise<void>;
export declare function createNamedDebouncedExecutor(delay?: number): ((key: string, callback: () => void) => void);
export declare function unflatten(properties: {
    [key: string]: string;
}): {
    [key: string]: any;
};