type ElementToLookFor = string | number | boolean | undefined | null;
/**
 * Returns whether an element is found in an array or not
 *
 * @export
 * @param {ElementToLookFor} element Item to look for
 * @param {any[]} array Array to look in
 * @return {boolean} Whether an element is found in an array or not
 */
declare function isInArray(element: ElementToLookFor, array: any[]): boolean;
/**
 * Returns whether an element is not found in an array or not
 *
 * @export
 * @param {ElementToLookFor} element Item to look for
 * @param {any[]} array Array to look in
 * @return {boolean}  Whether an element is not found in an array or not
 */
declare function isNotInArray(element: ElementToLookFor, array: any[]): boolean;
/**
 * Checks if all the items is found in the same array
 *
 * @export
 * @param {ElementToLookFor[]} elements Items to look for
 * @param {any[]} array Array to look in
 * @return {boolean} True if all elements are found. As soon as an item isn't found, returns false
 */
declare function areInArray(elements: ElementToLookFor[], array: any[]): boolean;
/**
 * Checks if an item is found in any of the provided arrays
 *
 * @export
 * @param {ElementToLookFor} element Item to look for
 * @param {any[][]} arrays Arrays to look in
 * @return {boolean} Returns true if the item is found in any of the arrays
 */
declare function isInAnyArray(element: ElementToLookFor, arrays: any[][]): boolean;
/**
 * Checks if items are found in any of the provided arrays
 *
 * @export
 * @param {ElementToLookFor[]} items Items to look for
 * @param {any[][]} arrays Arrays to look in
 * @return {boolean} Returns false as soon as an item isn't found in any array
 */
declare function areInAnyArray(items: ElementToLookFor[], arrays: any[][]): boolean;
/**
 * Checks if all items are found in same array
 *
 * @export
 * @param {ElementToLookFor[]} items Items to look for
 * @param {any[][]} arrays Arrays to look in
 * @return {boolean} Returns true only if all items are found in the same array
 */
declare function areInSameArray(items: ElementToLookFor[], arrays: any[][]): boolean;

type ObjectLike = {
    [prop: string]: any;
};
type AccessorFunction = (d: any) => any;
type IndexerFunction = (d: any) => string;
type ArrayOfObjects = ObjectLike[];

interface FastSearcherOptions {
    indexGetter: string | IndexerFunction;
    valueGetter?: string | AccessorFunction;
    keepOriginal?: boolean;
}
declare class FastArraySearcher {
    originalArray: any[];
    private readonly searchObject;
    /**
     * Creates an instance of FastArraySearcher.
     * @param {ArrayOfObjects} arrayToSearch Array to search
     * @param {(string | IndexerFunction)} options.indexGetter Property or item to use as index. Must resolve to a string
     * @param {(string | AccessorFunction)} [options.valueGetter] Property or item to use as value (will be returned if found)
     * @param {boolean} [options.keepOriginal=false] Whether to keeo original array reference inside
     * @memberof FastArraySearcher
     */
    constructor(arrayToSearch: ArrayOfObjects, options: FastSearcherOptions);
    /**
     * Finds element in array
     *
     * @param {string} element The element to search for
     * @return {(any|undefined)} The found item, if found
     * @memberof FastArraySearcher
     */
    find(element: string): any;
}

/**
 * Gets the distinct values of an array
 *
 * @export
 * @param {any[]} array Array to find unique values of
 * @param {(AccessorFunction | string)} [property] Property to map or accesor function to use to obtain the desired value
 * @return {any[]} The unique array of values
 */
declare function distinctValues(array: any[], property?: AccessorFunction | string): any[];

/**
 * Returns a new array without falsy values
 * false, null, and undefined will be removed from an array
 *
 * @export
 * @param {any[]} array Array to filter
 * @param {boolean} [includeZeros=false] Whether to consider 0s as falsy
 * @return {any[]} Filtered array
 */
declare function filterFalsyValues(array: any[], includeZeros?: boolean): any[];

type CompareFn<T> = (a: T, b: T) => number;
/**
 * SortingFunction class
 *
 * @export
 * @class SortingFunction
 */
declare class SortingFunction {
    sortType: 'number' | 'string';
    sortFunc: CompareFn<string> | CompareFn<number>;
    /**
     * Creates an instance of SortingFunction.
     * @param {('number' | 'string')} sortType
     * @param {(CompareFn<string> | CompareFn<number>)} sortFunc
     * @memberof SortingFunction
     */
    constructor(sortType: 'number' | 'string', sortFunc: CompareFn<string> | CompareFn<number>);
}
/**
 * Gets the most appropriate sort depending on array content
 *
 * @export
 * @param {any[]} array Array to analyse
 * @return {SortingFunction} The function to pass the sort() method
 */
declare function getBestSortingFunction(array: any[]): SortingFunction;
/**
 * ArraySorter class
 *
 * @export
 * @class ArraySorter
 */
declare class ArraySorter {
    private readonly arrayToSort;
    /**
     * Creates an instance of ArraySorter.
     * @param {any[]} array
     * @memberof ArraySorter
     */
    constructor(array: any[]);
    /**
     * Sorts array
     *
     * @return {any[])}
     * @memberof ArraySorter
     */
    sort(): any[];
}
/**
 * Clones array and sorts it with most appropriate sorting function
 *
 * @export
 * @param {any[]} array Array to sort
 * @return {any[]} Cloned and sorted array
 */
declare function sortArray(array: any[]): any[];
/**
 * Gets the first and last elements of an array
 *
 * @export
 * @template T
 * @param {T[]} array The array to get elements of
 * @return {{[T, T]}} The first and last elements
 */
declare function getFirstAndLastElement<T>(array: T[]): [T, T];

/**
 * Checks if array is empty
 *
 * @export
 * @param {any[]} array Array to check length of
 * @return {boolean} True if array.length === 0
 */
declare function isEmpty(array: any[]): boolean;
/**
 * Checks if array is not empty
 *
 * @export
 * @param {any[]} array Array to check if empty
 * @return {boolean} True if array.length > 0
 */
declare function isNotEmpty(array: any[]): boolean;

export { ArraySorter, FastArraySearcher, SortingFunction, areInAnyArray, areInArray, areInSameArray, distinctValues, filterFalsyValues, getBestSortingFunction, getFirstAndLastElement, isEmpty, isInAnyArray, isInArray, isNotEmpty, isNotInArray, sortArray };