/**
 * Create a numeric array for the given range.
 *
 * @example
 * // creates an array with n elements 0...(n - 1)
 * createRange(n)
 * createRange(3) // => [0, 1, 2]
 * createRange(1) // => [0]
 * createRange(0) // => []
 * createRange(-1) // => RangeError: Invalid array length
 *
 * @example
 * // creates an array from to (inclusive)
 * createRange(from, to)
 * createRange(1, 3) // => [1, 2, 3]
 * createRange(-2, 2) // => [-2, -1, 0, 1, 2]
 */
export declare const createRange: (s: number, e?: number) => number[];
/**
 * Calculate the sum of a numeric array.
 */
export declare const getArraySum: (array: number[]) => number;
/**
 * Remove an item from an array (returns a new array).
 */
export declare const removeFromArray: <T>(array: T[], item: T) => T[];
/**
 * Get the last element of an array.
 */
export declare const getLastElement: <T>(array: T[]) => T;
/**
 * Get the previous sibling of an array element.
 */
export declare const getPrevSibling: <T>(array: (T | undefined)[], item: T | undefined) => T | undefined;
/**
 * Get the next sibling of an array element.
 */
export declare const getNextSibling: <T>(array: (T | undefined)[], item: T | undefined) => T | undefined;
/**
 * Use a Set to get only the unique values of an array.
 */
export declare const makeArrayUnique: <T>(array: T[]) => T[];
/**
 * Get the count of elements of an array that pass the filter, and return either the count or the limit (whatever is smaller) as a string. The default limit is 99.
 *
 * If no limit should be applied, pass `0` as the limit.
 */
export declare const getCountWithLimit: <T>(array: T[], filterFn: (value: T) => boolean, limit?: number) => string;
/**
 * Reduce an array of objects to an object.
 *
 * @example
 * reduceObjectArrayToObject([{ a: 'foo' }, { b: 'bar' }])
 * // => { a: 'foo', b: 'bar' }
 */
export declare const reduceObjectArrayToObject: (array: {
    [key: string]: any;
}[]) => {
    [key: string]: any;
};
/**
 * Get a function that can be passed into `Array#sort` to sort an array of objects by the given key.
 */
export declare const sortByKey: (key: string) => <T = {
    [key: string]: any;
}>(a: T, b: T) => 0 | 1 | -1;
/**
 * Flatten an array.
 */
export declare const flatten: <T = any>(array: T[][]) => T[];