export declare function hasIntersection(a1: any[], a2: any[]): boolean;
export declare function hasDifference(a1: any[], a2: any[]): boolean;
/**
 * shallow comparison of two arrays, returns the unique values
 */
export declare function difference(a1: any[], a2: any[]): Array<any>;
/**
 * can be passed to javascript's sort method to sort an array of numbers numerically
 * @param a
 * @param b
 */
export declare const sortNumerically: (a: number, b: number) => number;
/**
 * takes the array and buckets the numbers less than and greater than the provided split number; is non-inclusive of split
 */
export declare function bucketLessAndGreaterThan(a: number[], split: number): [number[], number[]];
/**
 * returns index of first occurence where provided comparator is truthy; defaults comparator to strict equality check
 */
export declare function indexOf(arrayToCheck: any[], comparator: (arrayValue: any) => boolean | any): number;