import type { BlokkliChartData } from '../types.js';
import type { ColorOption } from '#blokkli/types/colors';
export declare const SUPERSCRIPTS: Record<string, string>;
/**
 * Replace `{1}`, `{2}`, etc. with Unicode superscript characters.
 */
export declare function applyFootnotes(text: string): string;
/**
 * Get the fallback color ID (first defined color).
 */
export declare function getFirstColorId(options: ColorOption[]): string;
/**
 * Get a color ID for the given index, cycling through available colors.
 * Always returns the canonical form (`<base>.<mainShade>` for ramps).
 */
export declare function getColorIdAtIndex(index: number, options: ColorOption[]): string;
export declare function getDefaultChartData(options: ColorOption[]): BlokkliChartData;
/**
 * Whether all (non-empty) category labels look like numbers — e.g. years
 * (2012, 2013, …) or plain numeric values. Used to decide whether categories
 * should be exposed for translation. Empty arrays return `false`.
 */
export declare function categoriesAreNumeric(categories: string[]): boolean;
/**
 * Whether all (non-empty) category labels match a known date source format
 * (MM/YYYY, YYYY-MM, YYYY-MM-DD, DD.MM.YYYY). Used to decide whether to apply
 * date formatting and to gate categories from being translatable.
 */
export declare function categoriesAreDates(categories: string[]): boolean;
export declare function parseNumericInput(raw: string): number;