export declare const checkHasDuplicatesByField: (field: string, data: Record<string, unknown>[]) => boolean;
export declare const handleObjectArrayDuplicatesByField: <T>(field: string, data: T[]) => {
    duplicates: T[];
    prunedData: T[];
};
export declare const removeNullOrUndefinedFromArray: (arr: string[]) => string[];
export declare function isArrayOfString(x: any[]): x is string[];
export declare function unique<T>(arr: T[]): T[] | undefined;
export declare const arrayRecursive: <T>(array: T[], key: keyof T, iteratee: (item: T) => boolean) => void;
export declare function isMobileDevice(): boolean;