import { type NormalisedTextOrSegments } from 'ag-charts-core';
import type { AgAxisLabelFormatterParams, AgBaseAxisLabelStyleOptions, AgTimeIntervalUnit, DateFormatterStyle, FormatterParams } from 'ag-charts-types';
import type { ChartAxisLabelFlipFlag } from '../chartAxis';
export type FormatterCacheKey = `${DateFormatterStyle}:${'year' | 'month' | 'day' | 'none'}`;
export interface FormatterCache {
    type: string;
    mergedFormat: string | Record<string, string>;
    unit: AgTimeIntervalUnit | undefined;
    formatter: ((value: any, fractionDigits?: number) => string) | undefined;
}
export type AxisLabelFormatterCache = Record<FormatterCacheKey, FormatterCache | undefined>;
export declare function createAxisLabelFormatterCache(): AxisLabelFormatterCache;
export declare function getAxisLabelSideFlag(mirrored: boolean): ChartAxisLabelFlipFlag;
export declare function formatAxisLabelValue(label: (Pick<AgBaseAxisLabelStyleOptions, never> & {
    formatter?: AgAxisLabelFormatterParams extends never ? never : ((params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined) | undefined;
    format?: string | Record<string, string>;
}) | undefined, cache: AxisLabelFormatterCache, callWithContext: (formatter: (params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined, params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined, params: FormatterParams<any>, index: number, options?: {
    specifier?: string | Record<string, string>;
    dateStyle: DateFormatterStyle;
    truncateDate: 'year' | 'month' | 'day' | undefined;
}): NormalisedTextOrSegments | undefined;