export interface FiatCountryIndexRailProps {
    /** The headings the list draws, in the order it draws them. */
    keys: readonly string[];
    /** The heading the list is scrolled to, marked when no finger is down. */
    active?: string;
    /**
     * Where down the rail the finger is: which heading it is over, and how far
     * through that heading's letter it sits. Called for every touch, not only
     * when the letter changes, so the list can follow the finger. The index
     * rather than the letter, because the caller wants the next heading too.
     */
    onScrub: (at: number, within: number) => void;
}
/**
 * The letters down the right edge, dragged through to reach a heading — what
 * a contacts list is read by, and the only way 245 countries are reachable
 * without a search term.
 *
 * Driven by a gesture-handler pan, which is what the sheet's own pan-to-close
 * is: on the responder system the sheet took the drag over after the first
 * letter, and the scrub stopped with its peek still drawn. Sharing one gesture
 * system makes the two compete, and the rail wins by activating on touch-down
 * where the sheet's pan waits for movement.
 */
export declare const FiatCountryIndexRail: import("react").MemoExoticComponent<({ keys, active, onScrub, }: FiatCountryIndexRailProps) => import("react").JSX.Element>;
//# sourceMappingURL=FiatCountryIndexRail.d.ts.map