export declare const emptyArray: <T>() => T[];
export declare const createArray: <T>(length: number, createItem: (index: number) => T) => T[];
export declare const firstItem: <T>(array: ArrayLike<T>) => T | undefined;
export declare const lastItem: <T>(array: ArrayLike<T>) => T | undefined;
export declare const arrayEqual: <T>(arrayA: T[], arrayB: T[]) => boolean;
export declare function createArrayEqual<T>(equal: (a: T, b: T) => boolean): (arrayA: T[], arrayB: T[]) => boolean;
export declare const deDupe: <T>(array: T[]) => T[];
export declare function createDeDupe<T>(equal: (a: T, b: T) => boolean): (array: T[]) => T[];
export declare const deDupe2D: <T>(array: T[][]) => T[][];
export declare const arrayMatch: <T>(arrayA: T[], arrayB: T[]) => boolean;
export declare const isArray2D: (value: unknown) => value is any[][];
export declare const ensureArray: <T>(value: T | T[]) => T[];
export declare const ensureArray2D: <T>(value: T[] | T[][]) => T[][];
declare enum Condition {
    Smaller = -1,
    Unlimited = 0,
    Bigger = 1
}
export declare const closestItem: (arr: number[], num: number, condition?: Condition) => number;
export {};