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import { SignedOrder } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { AssetBuyerOpts, BuyQuoteExecutionOpts, BuyQuoteRequestOpts, OrdersAndFillableAmounts } from './types';
const NULL_ADDRESS = '0x0000000000000000000000000000000000000000';
const MAINNET_NETWORK_ID = 1;
const DEFAULT_ASSET_BUYER_OPTS: AssetBuyerOpts = {
networkId: MAINNET_NETWORK_ID,
orderRefreshIntervalMs: 10000, // 10 seconds
expiryBufferSeconds: 300, // 5 minutes
};
const DEFAULT_BUY_QUOTE_REQUEST_OPTS: BuyQuoteRequestOpts = {
feePercentage: 0,
shouldForceOrderRefresh: false,
slippagePercentage: 0.2, // 20% slippage protection
};
// Other default values are dynamically determined
const DEFAULT_BUY_QUOTE_EXECUTION_OPTS: BuyQuoteExecutionOpts = {
feeRecipient: NULL_ADDRESS,
};
const EMPTY_ORDERS_AND_FILLABLE_AMOUNTS: OrdersAndFillableAmounts = {
orders: [] as SignedOrder[],
remainingFillableMakerAssetAmounts: [] as BigNumber[],
};
export const constants = {
ZERO_AMOUNT: new BigNumber(0),
NULL_ADDRESS,
MAINNET_NETWORK_ID,
ETHER_TOKEN_DECIMALS: 18,
DEFAULT_ASSET_BUYER_OPTS,
DEFAULT_BUY_QUOTE_EXECUTION_OPTS,
DEFAULT_BUY_QUOTE_REQUEST_OPTS,
MAX_PER_PAGE: 1000,
EMPTY_ORDERS_AND_FILLABLE_AMOUNTS,
};
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