/**
 * Return the intersection of all given arrays. Output array will never contain undefined.
 *
 * Accepts an optional options object as the first argument:
 * * `by` is a function that transforms a complex object into something uniquely
 * identifying for the comparison. default is fast-json-stable-stringify. If the function
 * returns undefined, the item will not be included in the return array.
 * * `skipEmpty` changes the default behavior when one of the input arrays is empty,
 * normally an empty input array would mean the intersection is empty, but in some cases
 * (like specifying optional filters) an empty array should be ignored instead
 */
export declare function intersect<T = any>(options: {
    by?: (itm: T) => string | number | undefined | null;
    skipEmpty?: boolean;
}, ...arrs: (T[] | undefined | null)[]): T[];
export declare function intersect<T = any>(...arrs: (T[] | undefined | null)[]): T[];