/// <reference types="react" />
import { MovementKey, FocusType, KeyConfig } from "./types";
/**
 * An extremely simple function that is used to generate an id for an item
 * within a list of other items.  This is generally used with list of items that
 * should have custom focus with the `aria-activedescendant` flow instead of
 * native focus.
 *
 * @param id The base id for the container element of all the items.
 * @param i The index of the item within the list. This number will be
 * incremented by 1 as an id to start from 1 instead of 0.
 */
export declare function getItemId(id: string, i: number): string;
/**
 * A small util function to transform a list of key codes into a list of
 * `KeyConfig` objects. This is useful for how I determine what behavior to
 * implement after a keydown event.
 *
 * @param keys A list of key mappings to convert to a key object. These should
 * be things like: "Tab", "Alt+Home", "A", "Shift+Alt+ArrowUp"
 * @param type The keyboard focus type this key should be mapped to
 * @private
 */
export declare function transformKeys(keys: readonly MovementKey[], type: FocusType): KeyConfig[];
/**
 * A small util get the `KeyConfig` based on the provided keys and keyboard
 * event. This ensures that the key, altKey, metaKey, and shiftKey values all
 * match.
 *
 * If a key is not found, `null` will be returned instead.
 *
 * @param event The event to get a key mapping type for
 * @param keys A list of key mappings to attempt to find a valid key event type
 * from.
 * @private
 */
export declare function getKeyboardConfig(event: KeyboardEvent | React.KeyboardEvent, keys: readonly KeyConfig[]): KeyConfig | null;
/**
 * Creates a stringified representation of the configuration so that the config
 * can be checked in the `onChange` callback for keyboard movement. This is used
 * as the `query` attribute on the change data.
 *
 * @param config The key config to stringify
 * @private
 */
export declare function getStringifiedKeyConfig(config: KeyConfig): string;