/**
 * Formats Y-axis tick values with a leading zero for decimals (e.g. 0.75, not .75).
 * Uses Western numerals for consistent chart readability across locales.
 */
export declare function formatChartAxisTick(value: number): string;
export declare const CHART_Y_AXIS_WIDTH = 44;
/** Gap between Y-axis line and tick labels (larger in RTL where axis is on the right). */
export declare function getChartYAxisTickMargin(rtl: boolean): number;
/**
 * Positions labels inside the plot area, away from the axis line.
 * Right-side axis (RTL): anchor end + negative dx shifts labels left of the line.
 * Left-side axis (LTR): same anchor keeps labels in the margin to the left of the line.
 */
export declare function getChartYAxisTickStyle(rtl: boolean): {
    textAnchor: "end";
    dx: number;
};
/** Space between X-axis category labels and the horizontal axis line. */
export declare const CHART_X_AXIS_TICK_MARGIN = 10;
/** Merges Recharts Y-axis tick SVG props (tick may also be a component or boolean). */
export declare function mergeYAxisTickProps(base: Record<string, unknown>, override: unknown, rtlStyle: ReturnType<typeof getChartYAxisTickStyle>): Record<string, unknown>;