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import { BigNumber } from '@0xproject/utils'; export const constants = { ZERO_AMOUNT: new BigNumber(0), NULL_ADDRESS: '0x0000000000000000000000000000000000000000', MAINNET_NETWORK_ID: 1, DEFAULT_SLIPPAGE_PERCENTAGE: 0.2, // 20% slippage protection DEFAULT_ORDER_REFRESH_INTERVAL_MS: 10000, // 10 seconds DEFAULT_FEE_PERCENTAGE: 0, ETHER_TOKEN_DECIMALS: 18, };