import type { ScaleBand, ScaleLinear, ScaleSymLog, ScaleTime } from 'd3-scale';
import { type CATEGORICAL, TIME, type XYAxisAnyNumericalType, type XYAxisInternalTypes } from './axis.js';
import type { XYChartExploreState } from './state.js';
import { DOT_VARIANT, DotSeriesWithDatapoints, LINE_VARIANT, LineSeriesWithDatapoints, AREA_VARIANT, AreaSeriesWithDatapoints, XYChartAxisInternal, type XYChartColorScale, type XYChartLinearAxisInternalProps, type XYChartLogAxisInternalProps } from './xy-chart-internals.js';
import type { XYChartCategoricalAxisProps, XYChartTimeAxisProps } from './xy-chart-props.js';
import type { XYChartSelectionLinearMetadata, DotOrLineSelection } from './xy-chart-selection.js';
import type { DotDatapoint, LineDatapoint, AreaDatapoint, XYChartData } from './xy-chart.js';
import { DateTimeFormatter, FormatterWithPrecision } from '../../core/types/formatter.js';
import type { AnyNumberScale, AnyScale, CategoricalScales, 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 declare const isFunction: <T = XYChartData, U = string>(fn: unknown) => fn is (data: T) => U;
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 LineScaleTime {
    scale: ScaleTime<number, number>;
    v0: Date;
    v1: Date | undefined;
}
export interface LineScaleLog {
    scale: ScaleSymLog<number, number>;
    v0: number;
}
export interface LineScaleLinear {
    scale: ScaleLinear<number, number>;
    v0: number;
    v1: undefined;
}
export interface LineScaleBand {
    scale: ScaleBand<string>;
    v0: string;
    v1: undefined;
}
export interface BarScaleTime {
    scale: ScaleTime<number, number>;
    v0: Date | undefined;
    v1: Date | undefined;
}
export interface BarScaleLog {
    scale: ScaleSymLog<number, number>;
    v0: number | undefined;
    v1: number | undefined;
}
export interface BarScaleLinear {
    scale: ScaleLinear<number, number>;
    v0: number | undefined;
    v1: number | undefined;
}
export interface BarScaleBand {
    scale: ScaleBand<string>;
    v0: string | undefined;
    v1: undefined;
}
export interface AreaScaleTime {
    scale: ScaleTime<number, number>;
    v0: Date | undefined;
    v1: Date | undefined;
}
export interface AreaScaleLog {
    scale: ScaleSymLog<number, number>;
    v0: number | undefined;
    v1: number | undefined;
}
export interface AreaScaleLinear {
    scale: ScaleLinear<number, number>;
    v0: number | undefined;
    v1: number | undefined;
}
export interface AreaScaleBand {
    scale: ScaleBand<string>;
    v0: string | undefined;
    v1: string | 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 isCategoricalScale(args: {
    axisType: XYAxisInternalTypes | undefined;
    axisScale: AnyScale | undefined;
}): args is {
    axisType: CATEGORICAL;
    axisScale: CategoricalScales;
};
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;
};
export declare function isDotContentPoint(content: XYChartExploreState['content']): content is {
    type: typeof DOT_VARIANT;
    series: DotSeriesWithDatapoints;
    datapoint: DotDatapoint;
};
export declare function isLineContentPoint(content: XYChartExploreState['content']): content is {
    type: typeof LINE_VARIANT;
    series: LineSeriesWithDatapoints;
    datapoint: LineDatapoint;
};
export declare function isAreaContentPoint(content: XYChartExploreState['content']): content is {
    type: typeof AREA_VARIANT;
    series: AreaSeriesWithDatapoints;
    datapoint: AreaDatapoint;
};
export declare function isNumericColoringScale(colorScale: XYChartColorScale): boolean;
export declare const isValidCategoryValue: (value: unknown) => value is string;
export declare function isDotOrLineSelection(point: XYChartSelectionLinearMetadata): point is DotOrLineSelection;