export declare const unique: <T>(arr: T[]) => T[];
export declare const uniqueByKey: <T extends Record<string, any>>(arr: T[], key: keyof T) => T[];
export declare const sortNumAsc: (arr: number[]) => number[];
export declare const sortNumDesc: (arr: number[]) => number[];
export declare const sortByKey: <T extends Record<string, any>>(arr: T[], key: keyof T, order?: "asc" | "desc") => T[];
export declare const toArray: <T>(arrayLike: ArrayLike<T>) => T[];
export declare const mergeArrays: <T>(...arrays: T[][]) => T[];
export declare const flatten: <T>(arr: any[], depth?: number) => T[];
export declare const arrFind: <T extends Record<string, any>>(arr: T[], key: keyof T, value: T[keyof T]) => T | undefined;
export declare const groupBy: <T extends Record<string, any>>(arr: T[], key: keyof T) => Record<string, T[]>;
export declare const filterEmptyValues: <T extends Record<string, any>>(obj: T) => Partial<T>;
export declare const createRange: <T = number>(length: number, mapFn?: (index: number) => T) => T[];