/**
 * 1. Setting a minimum price difference threshold, which is $1000 if the input value is greater than $50,000, otherwise $500.
 * 2. Deciding whether to show the price impact based on:
 *    - The percentage price impact being greater than 2% and the price difference being at least $20, or
 *    - The price difference meeting or exceeding the minimum threshold.
 */
export declare const calculatePriceImpact: (inputValue?: number, outputValue?: number) => string | undefined;
