/**
 * @abstract Determine a variable's precise type
 * @description Objects are clarified if they're a common type (array, element, null, etc)
 * @param    thing  Some variable to test
 * @param    deep   Whether to dive deeper into some types to return a more specific type
 * @return          Lowercase name for the variable's type
 */
declare function kind(thing?: unknown, deep?: boolean): string;
export default kind;