import Big from 'big.js'; export function formatAmount(value: string): string { return new Big(value).toFixed(2); } export function formatQuantity(value: string, assetType: string): string { switch (assetType) { case 'STOCK': return new Big(value).round(0).toString(); case 'CRYPTO': return new Big(value).round(8).toString(); default: return new Big(value).toFixed(2); } }