import { ScaleAlignment, type ScaleTickParams } from 'ag-charts-core';
import type { AgTimeInterval, AgTimeIntervalUnit } from 'ag-charts-types';
import { BandScale } from './bandScale';
/** Result of uniformity check via sampling */
export interface UniformityCheck {
    isUniform: boolean;
    interval?: number;
}
export declare const APPROXIMATE_THRESHOLD = 1000;
/**
 * Detect uniformity by sampling points from a range within the domain.
 * Returns interval if data is uniformly spaced (within 1% tolerance).
 */
export declare function checkUniformityBySampling(bands: readonly Date[], startIdx?: number, endIdx?: number): UniformityCheck;
export declare abstract class DiscreteTimeScale extends BandScale<Date, AgTimeInterval | AgTimeIntervalUnit | number> {
    static is(value: unknown): value is DiscreteTimeScale;
    abstract ticks(params: ScaleTickParams<AgTimeInterval | AgTimeIntervalUnit | number>, domain?: Date[], visibleRange?: [number, number], options?: {
        extend?: boolean;
        dropInitial?: boolean;
    }): {
        ticks: Date[];
        count: number | undefined;
        firstTickIndex?: number;
    } | undefined;
    toDomain(value: number): Date;
    protected get reversed(): boolean;
    /** Cached numeric band values for efficient binary search. Subclasses should override with a cached version. */
    protected get numericBands(): number[];
    convert(value: Date, options?: {
        clamp?: boolean;
        alignment?: ScaleAlignment;
    }): number;
    invert(position: number, nearest?: boolean): Date | undefined;
    /** Override in subclass to provide cached uniformity check result */
    getUniformityCache(_visibleRange?: [number, number]): UniformityCheck | undefined;
    findIndex(value: Date, alignment?: ScaleAlignment): number | undefined;
}
