export declare enum HeatmapLayoutType {
    Column = "column",
    Row = "row"
}
/** Internal per-cell record computed during rendering. */
export interface HeatmapCellDatum<Datum> {
    /** Original datum. */
    datum: Datum;
    /** Original datum index as in the provided `data` array. */
    index: number;
    /** Position of the datum within the linear sequence (datum index + `offset`). */
    gridIndex: number;
    /** Row index in the grid. */
    row: number;
    /** Column index in the grid. */
    column: number;
    /** Resolved numeric value. `null`/`undefined` renders an empty cell. */
    value: number | null | undefined;
    /** Cell top-left X coordinate in pixels. */
    x: number;
    /** Cell top-left Y coordinate in pixels. */
    y: number;
    /** Cell width in pixels. */
    width: number;
    /** Cell height in pixels. */
    height: number;
}