export declare const GRID_COLS = 3;
export declare function initialChoice(len: number): number;
export declare function gridStep(at: number, len: number, key: string, cols?: number, rtl?: boolean): number;
export interface GridCell {
    readonly label: string;
    readonly icon?: string;
    readonly note?: string;
    readonly ariaLabel?: string;
}
export interface GridOptions {
    readonly cells: readonly GridCell[];
    readonly prefix: string;
    readonly rtl?: boolean;
    readonly aimBy?: 'arrows' | 'tab';
    readonly onAim?: (at: number) => void;
    readonly onPick: (at: number) => void;
}
export interface Grid {
    readonly list: HTMLElement;
    readonly aimed: () => number;
    readonly aim: (at: number) => void;
    readonly key: (event: KeyboardEvent) => boolean;
}
export declare function makeGrid(owner: Document, options: GridOptions): Grid;
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