import type { PlotState, TransformArg } from '../types.js';
export declare function intervalX<T>(args: TransformArg<T>, { plot }: {
    plot: PlotState;
}): {
    data: T[];
};
export declare function intervalY<T>(args: TransformArg<T>, { plot }: {
    plot: PlotState;
}): {
    data: T[];
};