import { XYChartData } from '../types/xy-chart.js';
/**
 * Generic function that evaluates a value or function with data context
 * @param valueOrFn Value or function that returns a value
 * @param data Data context to pass to the function if valueOrFn is a function
 * @returns The value directly or the result of calling the function with data
 */
export declare const evaluateWithData: <T>(valueOrFn: T | ((data: unknown) => T), data: XYChartData) => T;
/**
 * Helper function to evaluate optional attributes with default values
 * @param value The optional value or function
 * @param data Data context to pass to the function if value is a function
 * @param defaultValue The default value to use if value is undefined
 * @returns The evaluated value or the default value if undefined
 */
export declare const evaluateOptionalAttribute: <T>(value: T | ((data: unknown) => T) | undefined, data: XYChartData, defaultValue: T) => T;