export type SeriesPoint = {
    t: number;
    v: number | null;
};
export type MetricHistoryChartProps = {
    points: SeriesPoint[];
    /** Fixed ceiling (100 for %) or "auto" to fit the data with headroom. */
    yMax?: number | "auto";
    yMin?: number;
    /** Format a value for the axis + readout (default: rounded + unit). */
    format?: (v: number) => string;
    unit?: string;
    /** Stroke/fill hue — any CSS color; pass a token var to stay theme-safe. */
    color?: string;
    thresholds?: {
        warn?: number | undefined;
        crit?: number | undefined;
    } | undefined;
    height?: number;
    /** Human range label for the empty state ("in the last hour"). */
    rangeLabel?: string | undefined;
    className?: string | undefined;
};
export declare function MetricHistoryChart({ points, yMax, yMin, format, unit, color, thresholds, height, rangeLabel: rangeLabelProp, className, }: MetricHistoryChartProps): import("react").JSX.Element;