import type { ScaleBand, ScaleLinear, ScaleSymLog, ScaleTime } from 'd3-scale';
import { TIME, type XYAxisAnyNumericalType, type XYAxisInternalTypes } from './axis.js';
import type { XYChartAxisInternal } from './xy-chart-internals.js';
import type { XYChartCategoricalAxisProps, XYChartLinearAxisInternalProps, XYChartLogAxisInternalProps, XYChartTimeAxisProps } from './xy-chart.js';
import { DateTimeFormatter, FormatterWithPrecision } from '../../core/types/formatter.js';
import type { AnyNumberScale, AnyScale, DateScales } from '../../core/types/scales.js';
/**
 * Type guard to check if the value is a primitive number
 * @param  value - a value to be checked
 * @returns return true if it's a number or false if it's not
 **/
export declare const isNumber: (value: unknown) => value is number;
/**
 * Type guard to check if the value is a primitive string
 * @param value - a value to be checked
 * @returns return true if it's a string or false if it's not
 **/
export declare const isString: (value: unknown) => value is string;
/**
 * Type guard to check if the value is a instance of Date object
 * @param value - a value to be checked
 * @returns return true if it's a Date object or false if it's not
 **/
export declare const isDate: (value: unknown) => value is Date;
export interface DotScaleTime {
    scale: ScaleTime<number, number>;
    v0: Date;
    v1: Date | undefined;
}
export interface DotScaleLog {
    scale: ScaleSymLog<number, number>;
    v0: number;
}
export interface DotScaleLinear {
    scale: ScaleLinear<number, number>;
    v0: number;
    v1: undefined;
}
export interface DotScaleBand {
    scale: ScaleBand<string>;
    v0: string;
    v1: undefined;
}
export interface TooltipCategorical {
    formatter: undefined;
    v0: string;
    v1: undefined;
}
export interface TooltipNumerical {
    formatter: FormatterWithPrecision;
    v0: number;
    v1: number;
}
export interface TooltipTime {
    formatter: DateTimeFormatter;
    v0: Date;
    v1: Date;
}
export interface NumericalHoveringPoint {
    v0: number;
    scale: ScaleLinear<number, number>;
}
export interface TimeHoveringPoint {
    v0: Date;
    scale: ScaleTime<number, number>;
}
export interface CategoricalHoveringPoint {
    v0: string;
    scale: ScaleBand<string>;
}
export interface RectScaleLinear {
    scale: ScaleLinear<number, number>;
    v0: number;
    v1: number;
}
export interface RectScaleLog {
    scale: ScaleSymLog<number, number>;
    v0: number;
    v1: number;
}
export interface RectScaleTime {
    scale: ScaleTime<number, number>;
    v0: Date;
    v1: Date;
}
export interface RectScaleBand {
    scale: ScaleBand<string>;
    v0: string;
    v1: never;
}
export declare const isLinear: (axisType: string) => boolean;
export declare const isLogarithmic: (axisType: string) => boolean;
export declare const isTime: (axisType: string) => boolean;
export declare const isCategorical: (axisType: string) => boolean;
export declare const isNumerical: (axisType: string) => boolean;
export declare const isAnyNumber: (axisType: string) => boolean;
export declare function isLinearAxis(axis: XYChartAxisInternal): axis is XYChartAxisInternal & XYChartLinearAxisInternalProps;
export declare function isLogarithmicAxis(axis: XYChartAxisInternal): axis is XYChartAxisInternal & XYChartLogAxisInternalProps;
export declare function isNumericalAxis(axis: XYChartAxisInternal): axis is XYChartAxisInternal & (XYChartLinearAxisInternalProps | XYChartLogAxisInternalProps);
export declare function isAnyNumericalAxis<T extends {
    type: XYChartAxisInternal['type'];
}>(axis: T): axis is T & {
    type: XYAxisAnyNumericalType;
};
export declare function isTimeAxis(axis: XYChartAxisInternal): axis is XYChartAxisInternal & XYChartTimeAxisProps;
export declare function isCategoricalAxis(axis: {
    type: XYChartAxisInternal['type'];
}): axis is XYChartAxisInternal & XYChartCategoricalAxisProps;
export declare function isTimeScale(args: {
    axisType: XYAxisInternalTypes | undefined;
    axisScale: AnyScale | undefined;
}): args is {
    axisType: TIME;
    axisScale: DateScales;
};
export declare function isAnyNumericalScale(args: {
    axisType: XYAxisInternalTypes | undefined;
    axisScale: AnyScale | undefined;
}): args is {
    axisType: XYAxisInternalTypes;
    axisScale: AnyNumberScale;
};