/**
 * Unit converter initialization function
 * Creates a converter function that can convert between different units using base unit ratios
 * @template T Object type containing unit to base unit ratios
 * @template K Key type of the ratios object (string, number, or symbol)
 * @param toBaseUnitRatios Object containing conversion ratios to the base unit
 * @returns A function that converts values between units
 * @example
 * const lengthConverter = unitConverterInitialization({
 *   meters: 1,      // base unit
 *   kilometers: 1000,
 *   centimeters: 0.01
 * });
 * lengthConverter(5, "kilometers", "meters"); // returns 5000
 */
export declare const unitConverterInitialization: <T extends { [k in K]: number; }, K extends string | number | symbol>(toBaseUnitRatios: T) => (value: number, from: keyof T, to: keyof T) => number;