/**
 * WHICH ONE OF THIS SET YOU ARE ON, as `aria-current` takes it.
 *
 * One definition because two entries render it — a rail row (`RowFocusEntry`) and a
 * menu row (`MenuButton`) — and a second copy means the next token lands in one
 * of them.
 */
export type CurrentToken = boolean | "page" | "step" | "location";
/** A TOKEN, and absence — never `false`, which announces "not current" on a row
 *  whose silence already said so. */
export declare function ariaCurrent(current: CurrentToken | undefined): "true" | "page" | "step" | "location" | undefined;