import type { GraphConfig } from '@cosmos.gl/graph';
import { ColorAccessorFn } from "../config/interfaces/data";
export declare const createOrdinalScale: (data: string[], palette: string[], unknownColor: string) => ColorAccessorFn;
export declare const createInterpolatedNumericScale: (data: number[], palette: string[], unknownColor: string, quantile?: boolean) => ColorAccessorFn<number>;
export declare const createInterpolatedStringScale: (data: string[], palette: string[], unknownColor: string) => ColorAccessorFn;
export declare const createEqualBreakpointsScale: (data: number[], palette: string[], unknownColor: string, quantile?: boolean) => ColorAccessorFn<number>;
export declare const getRGBAFromPointColors: (colors: Float32Array | undefined, index: number) => [number, number, number, number] | undefined;
export declare const hexToBrightness: (hex: string) => number;
/**
 * Normalizes RGBA tuples for @cosmos.gl/graph (0–1 channels). Legacy 0–255 RGB tuples are still accepted
 * when any channel exceeds 1; alpha above 1 is treated as 0–255 alpha.
 */
export declare const normalizeRgbaTuple: (tuple: [number, number, number, number]) => [number, number, number, number];
export declare const rgbaArrayToRgbString: (rgba: [number, number, number, number] | string | undefined, unknownColorString: string) => string;
/** In-place: tuple colors sent to @cosmos.gl/graph must use normalized RGBA (0–1). */
export declare const normalizeGraphConfigColorTuples: (config: GraphConfig) => void;
export declare const getHexColor: (c?: string | [number, number, number, number]) => string | undefined;