/** Shared context fields for accessibility summary functions. */
type BarChartSummaryContextBase = {
    unit: string;
    locale: string;
};
/**
 * Context passed to the stacked-bar summary function (stackedBarSummary).
 * Used for rows that have seriesTwoValue (two values per row).
 */
export type BarChartStackedSummaryContext = BarChartSummaryContextBase & {
    categoryLabel: string;
    seriesOneValue: number;
    seriesTwoValue: number;
    /** Precomputed: seriesTwoValue - seriesOneValue. Use in the summary string (e.g. "50 XP gained - now at 150 XP"). */
    gained: number;
};
/**
 * Context passed to the single-value bar summary function (singleValueBarSummary).
 * Used for all single-bar rows (no seriesTwoValue). The component uses the returned string as aria-label (when row is link/button) or screenreader-only text (when row is a div).
 */
export type BarChartSingleValueBarSummaryContext = BarChartSummaryContextBase & {
    categoryLabel: string;
    value: number;
};
/**
 * BarChart translation configuration for internationalization.
 *
 * **accessibility** is function-only. Two optional summary functions; when omitted, default English summaries are used.
 * - **stackedBarSummary**: Used for stacked (two-value) rows. Context includes `gained` (seriesTwoValue - seriesOneValue).
 * - **singleValueBarSummary**: Used for all single-value rows. Return value is placed as aria-label (when row is link/button) or screenreader-only text (when not).
 *
 * **sortLabel**, **sortOptions**, and **locale** are always strings.
 */
export type BarChartTranslations = {
    sortLabel: string;
    sortOptions: {
        none: string;
        labelAsc: string;
        labelDesc: string;
        valueAsc: string;
        valueDesc: string;
    };
    accessibility: {
        /** Used for stacked (two-value) rows. Context includes `gained` for the numeric difference. */
        stackedBarSummary?: (ctx: BarChartStackedSummaryContext) => string;
        /** Used for all single-value rows. Same return value is placed as aria-label (when row is link/button) or screenreader-only text (when not). */
        singleValueBarSummary?: (ctx: BarChartSingleValueBarSummaryContext) => string;
    };
    /** For Intl.NumberFormat (e.g. 'en', 'es', 'fr'). */
    locale: string;
};
/**
 * Partial translations for BarChart. Nested `accessibility` and `sortOptions` may
 * override individual keys; they are merged with defaults at runtime.
 */
export type PartialBarChartTranslations = Partial<Omit<BarChartTranslations, 'accessibility' | 'sortOptions'>> & {
    sortOptions?: Partial<BarChartTranslations['sortOptions']>;
    accessibility?: Partial<BarChartTranslations['accessibility']>;
};
/**
 * Default stacked-bar summary (English).
 */
export declare const getDefaultStackedBarSummary: (ctx: BarChartStackedSummaryContext) => string;
/**
 * Default single-value bar summary (English).
 */
export declare const getDefaultSingleValueBarSummary: (ctx: BarChartSingleValueBarSummaryContext) => string;
export declare const defaultBarChartTranslations: BarChartTranslations;
export {};