114 lines
3.6 KiB
TypeScript
114 lines
3.6 KiB
TypeScript
import { BigNumber } from '@0x/utils';
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import {
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ExchangeProxyContractOpts,
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ExtensionContractType,
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ForwarderExtensionContractOpts,
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OrderPrunerOpts,
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OrderPrunerPermittedFeeTypes,
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RfqtRequestOpts,
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SwapQuoteExecutionOpts,
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SwapQuoteGetOutputOpts,
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SwapQuoteRequestOpts,
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SwapQuoterOpts,
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} from './types';
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import { DEFAULT_GET_MARKET_ORDERS_OPTS } from './utils/market_operation_utils/constants';
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const ETH_GAS_STATION_API_URL = 'https://ethgasstation.info/api/ethgasAPI.json';
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const NULL_BYTES = '0x';
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const NULL_ERC20_ASSET_DATA = '0xf47261b00000000000000000000000000000000000000000000000000000000000000000';
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const NULL_ADDRESS = '0x0000000000000000000000000000000000000000';
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const MAINNET_CHAIN_ID = 1;
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const ONE_SECOND_MS = 1000;
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const DEFAULT_PER_PAGE = 1000;
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const ZERO_AMOUNT = new BigNumber(0);
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const DEFAULT_ORDER_PRUNER_OPTS: OrderPrunerOpts = {
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expiryBufferMs: 120000, // 2 minutes
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permittedOrderFeeTypes: new Set<OrderPrunerPermittedFeeTypes>([
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OrderPrunerPermittedFeeTypes.NoFees,
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OrderPrunerPermittedFeeTypes.MakerDenominatedTakerFee,
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]), // Default asset-swapper for CFL oriented fee types
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};
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// 6 seconds polling interval
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const PROTOCOL_FEE_UTILS_POLLING_INTERVAL_IN_MS = 6000;
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const PROTOCOL_FEE_MULTIPLIER = new BigNumber(70000);
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// default 50% buffer for selecting native orders to be aggregated with other sources
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const MARKET_UTILS_AMOUNT_BUFFER_PERCENTAGE = 0.5;
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const DEFAULT_SWAP_QUOTER_OPTS: SwapQuoterOpts = {
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...{
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chainId: MAINNET_CHAIN_ID,
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orderRefreshIntervalMs: 10000, // 10 seconds
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},
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...DEFAULT_ORDER_PRUNER_OPTS,
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samplerGasLimit: 250e6,
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ethGasStationUrl: ETH_GAS_STATION_API_URL,
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rfqt: {
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takerApiKeyWhitelist: [],
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makerAssetOfferings: {},
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},
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};
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const DEFAULT_FORWARDER_EXTENSION_CONTRACT_OPTS: ForwarderExtensionContractOpts = {
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feePercentage: 0,
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feeRecipient: NULL_ADDRESS,
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};
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const DEFAULT_FORWARDER_SWAP_QUOTE_GET_OPTS: SwapQuoteGetOutputOpts = {
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useExtensionContract: ExtensionContractType.Forwarder,
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extensionContractOpts: DEFAULT_FORWARDER_EXTENSION_CONTRACT_OPTS,
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};
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const DEFAULT_EXCHANGE_PROXY_EXTENSION_CONTRACT_OPTS: ExchangeProxyContractOpts = {
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isFromETH: false,
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isToETH: false,
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affiliateFee: {
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recipient: NULL_ADDRESS,
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buyTokenFeeAmount: ZERO_AMOUNT,
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sellTokenFeeAmount: ZERO_AMOUNT,
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},
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};
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const DEFAULT_FORWARDER_SWAP_QUOTE_EXECUTE_OPTS: SwapQuoteExecutionOpts = DEFAULT_FORWARDER_SWAP_QUOTE_GET_OPTS;
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const DEFAULT_EXCHANGE_PROXY_SWAP_QUOTE_GET_OPTS: SwapQuoteGetOutputOpts = {
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useExtensionContract: ExtensionContractType.ExchangeProxy,
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extensionContractOpts: DEFAULT_EXCHANGE_PROXY_EXTENSION_CONTRACT_OPTS,
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};
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const DEFAULT_SWAP_QUOTE_REQUEST_OPTS: SwapQuoteRequestOpts = {
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...DEFAULT_GET_MARKET_ORDERS_OPTS,
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};
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const DEFAULT_RFQT_REQUEST_OPTS: Partial<RfqtRequestOpts> = {
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makerEndpointMaxResponseTimeMs: 1000,
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};
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export const constants = {
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ETH_GAS_STATION_API_URL,
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PROTOCOL_FEE_MULTIPLIER,
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NULL_BYTES,
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ZERO_AMOUNT,
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NULL_ADDRESS,
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MAINNET_CHAIN_ID,
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DEFAULT_ORDER_PRUNER_OPTS,
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ETHER_TOKEN_DECIMALS: 18,
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ONE_AMOUNT: new BigNumber(1),
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ONE_SECOND_MS,
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DEFAULT_SWAP_QUOTER_OPTS,
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DEFAULT_FORWARDER_SWAP_QUOTE_GET_OPTS,
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DEFAULT_FORWARDER_SWAP_QUOTE_EXECUTE_OPTS,
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DEFAULT_SWAP_QUOTE_REQUEST_OPTS,
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DEFAULT_EXCHANGE_PROXY_SWAP_QUOTE_GET_OPTS,
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DEFAULT_EXCHANGE_PROXY_EXTENSION_CONTRACT_OPTS,
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DEFAULT_PER_PAGE,
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DEFAULT_RFQT_REQUEST_OPTS,
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NULL_ERC20_ASSET_DATA,
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PROTOCOL_FEE_UTILS_POLLING_INTERVAL_IN_MS,
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MARKET_UTILS_AMOUNT_BUFFER_PERCENTAGE,
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BRIDGE_ASSET_DATA_PREFIX: '0xdc1600f3',
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};
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